This document provides a review of recent advances in ultra-wideband (UWB) antenna design. It discusses how UWB antennas transmit across a wider frequency range (3.1-10.6 GHz) than narrowband antennas. The document reviews the development of various UWB antenna designs from 2006 onward. It also discusses the emergence of UWB notch antennas, which are designed to reduce interference by creating notches at specific frequencies like WiFi and WiMAX bands. The document summarizes different techniques for creating notch characteristics and reviews key UWB notch antenna designs.
Coplanar waveguide-fed ultra-wideband antenna with WLAN bandnooriasukmaningtyas
A modified coplanar waveguide fed ultra-wideband antenna with extended transmission band to WLAN frequency is investigated. The proposed antenna consists of a modified semi-circular patch and staircase of ground plane. The prototype is constructed on a low cost FR4 substrate. The overall dimensions of proposed UWB antenna are 34 mm x 40 mm. The result has been shown that the proposed antenna archives low VSWR over transmission bandwidth from 2.10-12.7 GHz to cover both WLAN and UWB bands. The average gain is 3.87 dBi. It depicts nearly omni-directional radiation pattern like dipole antenna. Moreover, the fabricated prototype antenna shows a good agreement between the simulated and measured results. It is illustrated that our proposed technique is a good choice for designing any structure of microstrip antenna which appropriate to use for many wireless communication systems.
DESIGN OF UWB MONOPOLE BASED FRACTAL BINARY TREE ANTENNA FOR WIRELESS COMMUNI...IRJET Journal
The document describes the design and simulation of a compact dual microstrip-fed UWB monopole antenna with a parasitic patch. A fractal binary tree structure is introduced to achieve a passband frequency of 2.45 GHz for Bluetooth applications without sacrificing UWB antenna efficiency. The antenna is designed and simulated using HFSS software. Simulation results show the antenna has a reflection coefficient below -10 dB from 3.1-10.6 GHz, a gain of 3.46 dB at 9.2 GHz, and a radiation pattern with low fluctuation. The addition of the fractal binary tree allows the antenna to operate for both Bluetooth and UWB applications with good performance.
A compact UWB monopole antenna with penta band notched characteristicsTELKOMNIKA JOURNAL
A modified rectangular monopole ultra-wideband (UWB) antenna with penta notched frequency bands is presented. An inverted U shaped and slanted U-shaped on the radiating patch are inserted to achieve WiMAX and ARN bands rejection respectively, two mirrored summation Σ-shaped and four mirrored 5-shaped slots are inserted on the partial ground to achieve WLAN and X-band bands rejection respectively, finally rectangular shaped slot with partially open on the feed is inserted to achieve ITU-8 band rejection. The proposed antenna which was simulated has a compact size 30×35×1.6 m3. It is operated with impedance bandwidth 2.8-10.6 GHz at |S11| < −10 dB, that supported UWB bandwidth with filtering the five narrowbands that avoid the possible interference with them. The simulated resonant frequency for notched filters received 3.55, 4.55, 5.53, 7.45, 8.16 GHZ, for WiMAX, ARN, WLAN, X-Band, ITU-8 respectively. The proposed antenna is suitable for wireless communication such as mobile communication and internet of everything (IoE). Throughout this paper, CST-EM software package was used for the design implementation. Surface current distributions for all notched filters were investigated and shown that it is concentrated around the feeding point and the inserted notched slots proving that there is no radiation to the space due to maximum stored electromagnetic energy around each investigated notch slot, proving that the slots play a role of a quarter wavelength transformer which generates for each notched band, maximum gain, and radiation pattern are also investigated.
Design and modification of circular monpole uwb antenna for wpan applicationAlexander Decker
This document describes the design and modification of a circular monopole ultra-wideband (UWB) antenna for wireless personal area network (WPAN) applications. The antenna is designed on an FR4 substrate with a 50-ohm microstrip feed line. Simulation results show the return loss is better than -10 dB and voltage standing wave ratio is less than 2 at the operating frequency of 7 GHz. The proposed antenna geometry was designed and simulated using HFSS11 software. Details of the antenna design, geometry, and measured results are presented.
DESIGN TRENDS IN ULTRA WIDE BAND WEARABLE ANTENNAS FOR WIRELESS ON-BODY NETWORKSDr.SHANTHI K.G
This document discusses design trends in ultra wide band wearable antennas for wireless on-body networks. It provides an overview of wireless body area networks (WBANs) and the challenges in designing wearable antennas that operate in close proximity to the human body. Ultra wide band technology is identified as a promising solution due to features like low cost, high data rates, and low power requirements. The document reviews various design methodologies for ultra wide band wearable antennas, including microstrip, fractal, and band-notched antenna designs. It evaluates different substrate materials and discusses bending effects on antenna performance. The document concludes that liquid crystal polymer and natural rubber substrates show potential as flexible options for wearable antenna design.
This document discusses the modeling, simulation, and analysis of an ultra-wideband microstrip patch antenna. It provides background on microstrip patch antennas and their use in wireless communications. The objectives are to design a compact UWB microstrip patch antenna with improved gain and radiation pattern across the frequency range. Simulation software HFSS will be used to model and analyze the antenna design. Several techniques for obtaining UWB characteristics from prior research are summarized.
DESIGN OF MONOPOLE BASED FRACTAL BINARY TREE FOR UWB APPLICATIONS PPT.pptxMoturiSatyanarayana
This document describes the design of a monopole-based fractal binary tree antenna for ultra-wideband (UWB) applications. It proposes a microstrip-fed UWB monopole antenna with a parasitic patch and fractal binary tree structure. The antenna is designed and simulated using HFSS software to achieve a passband frequency of 2.45GHz for Bluetooth in addition to UWB performance. Simulation results including return loss, radiation patterns, gain and VSWR are presented. Potential applications of the antenna include short-range high-speed wireless systems such as wireless local area networks and communication systems for military and automotive uses.
IRJET- Synthesis and Simulation for MIMO Antennas with Two Port for Wide Band...IRJET Journal
This document discusses the design and simulation of multiple-input multiple-output (MIMO) antennas with two ports for wideband isolation. Specifically, it focuses on analyzing two designs for planar MIMO antennas operating across the entire ultra-wideband spectrum of 3.1-10.6 GHz. The first design proposes a printed UWB MIMO antenna system consisting of two semicircular radiating elements on a single substrate with a compact size of 35x40mm. The second design analyzes various isolation structures to reduce coupling between antenna elements. Both designs are analyzed for isolation performance, bandwidth, and radiation characteristics.
Coplanar waveguide-fed ultra-wideband antenna with WLAN bandnooriasukmaningtyas
A modified coplanar waveguide fed ultra-wideband antenna with extended transmission band to WLAN frequency is investigated. The proposed antenna consists of a modified semi-circular patch and staircase of ground plane. The prototype is constructed on a low cost FR4 substrate. The overall dimensions of proposed UWB antenna are 34 mm x 40 mm. The result has been shown that the proposed antenna archives low VSWR over transmission bandwidth from 2.10-12.7 GHz to cover both WLAN and UWB bands. The average gain is 3.87 dBi. It depicts nearly omni-directional radiation pattern like dipole antenna. Moreover, the fabricated prototype antenna shows a good agreement between the simulated and measured results. It is illustrated that our proposed technique is a good choice for designing any structure of microstrip antenna which appropriate to use for many wireless communication systems.
DESIGN OF UWB MONOPOLE BASED FRACTAL BINARY TREE ANTENNA FOR WIRELESS COMMUNI...IRJET Journal
The document describes the design and simulation of a compact dual microstrip-fed UWB monopole antenna with a parasitic patch. A fractal binary tree structure is introduced to achieve a passband frequency of 2.45 GHz for Bluetooth applications without sacrificing UWB antenna efficiency. The antenna is designed and simulated using HFSS software. Simulation results show the antenna has a reflection coefficient below -10 dB from 3.1-10.6 GHz, a gain of 3.46 dB at 9.2 GHz, and a radiation pattern with low fluctuation. The addition of the fractal binary tree allows the antenna to operate for both Bluetooth and UWB applications with good performance.
A compact UWB monopole antenna with penta band notched characteristicsTELKOMNIKA JOURNAL
A modified rectangular monopole ultra-wideband (UWB) antenna with penta notched frequency bands is presented. An inverted U shaped and slanted U-shaped on the radiating patch are inserted to achieve WiMAX and ARN bands rejection respectively, two mirrored summation Σ-shaped and four mirrored 5-shaped slots are inserted on the partial ground to achieve WLAN and X-band bands rejection respectively, finally rectangular shaped slot with partially open on the feed is inserted to achieve ITU-8 band rejection. The proposed antenna which was simulated has a compact size 30×35×1.6 m3. It is operated with impedance bandwidth 2.8-10.6 GHz at |S11| < −10 dB, that supported UWB bandwidth with filtering the five narrowbands that avoid the possible interference with them. The simulated resonant frequency for notched filters received 3.55, 4.55, 5.53, 7.45, 8.16 GHZ, for WiMAX, ARN, WLAN, X-Band, ITU-8 respectively. The proposed antenna is suitable for wireless communication such as mobile communication and internet of everything (IoE). Throughout this paper, CST-EM software package was used for the design implementation. Surface current distributions for all notched filters were investigated and shown that it is concentrated around the feeding point and the inserted notched slots proving that there is no radiation to the space due to maximum stored electromagnetic energy around each investigated notch slot, proving that the slots play a role of a quarter wavelength transformer which generates for each notched band, maximum gain, and radiation pattern are also investigated.
Design and modification of circular monpole uwb antenna for wpan applicationAlexander Decker
This document describes the design and modification of a circular monopole ultra-wideband (UWB) antenna for wireless personal area network (WPAN) applications. The antenna is designed on an FR4 substrate with a 50-ohm microstrip feed line. Simulation results show the return loss is better than -10 dB and voltage standing wave ratio is less than 2 at the operating frequency of 7 GHz. The proposed antenna geometry was designed and simulated using HFSS11 software. Details of the antenna design, geometry, and measured results are presented.
DESIGN TRENDS IN ULTRA WIDE BAND WEARABLE ANTENNAS FOR WIRELESS ON-BODY NETWORKSDr.SHANTHI K.G
This document discusses design trends in ultra wide band wearable antennas for wireless on-body networks. It provides an overview of wireless body area networks (WBANs) and the challenges in designing wearable antennas that operate in close proximity to the human body. Ultra wide band technology is identified as a promising solution due to features like low cost, high data rates, and low power requirements. The document reviews various design methodologies for ultra wide band wearable antennas, including microstrip, fractal, and band-notched antenna designs. It evaluates different substrate materials and discusses bending effects on antenna performance. The document concludes that liquid crystal polymer and natural rubber substrates show potential as flexible options for wearable antenna design.
This document discusses the modeling, simulation, and analysis of an ultra-wideband microstrip patch antenna. It provides background on microstrip patch antennas and their use in wireless communications. The objectives are to design a compact UWB microstrip patch antenna with improved gain and radiation pattern across the frequency range. Simulation software HFSS will be used to model and analyze the antenna design. Several techniques for obtaining UWB characteristics from prior research are summarized.
DESIGN OF MONOPOLE BASED FRACTAL BINARY TREE FOR UWB APPLICATIONS PPT.pptxMoturiSatyanarayana
This document describes the design of a monopole-based fractal binary tree antenna for ultra-wideband (UWB) applications. It proposes a microstrip-fed UWB monopole antenna with a parasitic patch and fractal binary tree structure. The antenna is designed and simulated using HFSS software to achieve a passband frequency of 2.45GHz for Bluetooth in addition to UWB performance. Simulation results including return loss, radiation patterns, gain and VSWR are presented. Potential applications of the antenna include short-range high-speed wireless systems such as wireless local area networks and communication systems for military and automotive uses.
IRJET- Synthesis and Simulation for MIMO Antennas with Two Port for Wide Band...IRJET Journal
This document discusses the design and simulation of multiple-input multiple-output (MIMO) antennas with two ports for wideband isolation. Specifically, it focuses on analyzing two designs for planar MIMO antennas operating across the entire ultra-wideband spectrum of 3.1-10.6 GHz. The first design proposes a printed UWB MIMO antenna system consisting of two semicircular radiating elements on a single substrate with a compact size of 35x40mm. The second design analyzes various isolation structures to reduce coupling between antenna elements. Both designs are analyzed for isolation performance, bandwidth, and radiation characteristics.
This document summarizes a research paper that proposes a new wideband millimeter-wave substrate integrated waveguide (SIW) cavity-backed patch antenna for satellite communications applications from 31-36 GHz. The antenna is designed using computer simulation technology software. Simulation results show the antenna achieves good reflection coefficient (below -10 dB) across the target frequency range, as well as high efficiency (80%) and gain (8.87 dBi). This new antenna design covers all applications within the 31-36 GHz range using SIW technology for its benefits of low cost, simple integration, and improved radiation efficiency compared to other planar feeding structures.
Meta-surface (frequency selective surface) loaded high gain directional ante...IJECEIAES
In this work, a meta-surface (frequency selective surface) loaded high gain directional antenna system is presented. The antenna system is developed using ultra-wideband (UWB) antenna element and meta-surface reflector. The UWB antenna element is designed and simulated without meta-surface reflector. The UWB antenna element has poor impedance bandwidth and directivity. A meta-surface is created using unit cell and equal in the size of the antenna substrate. The meta-surface is placed over the UWB antenna element at optimized height (H=30 mm). The impedance bandwidth, directivity and gain of the proposed antenna are improved by the meta-surface reflector. The proposed antenna is fabricated and experimentally validated by the comparison of the simulated and measured results. The antenna has 3 to 6 GHz wide impedance bandwidth, more than 5 dBi gain and maximum 4.6 dBi directivity at 3.5 GHz frequency. Performance of the proposed antenna is also compared with existing carried out work. Comparatively, the proposed antenna with high directivity is most suitable for IEEE 802.15.4a UWB wireless sensor network (WSN) security application.
A miniaturized printed UWB antenna with dual notching for X-b and and aeronau...TELKOMNIKA JOURNAL
This document presents a miniaturized printed ultra-wideband (UWB) microstrip antenna with dual notched bands for X-band and aeronautical radio navigation applications. The antenna is 19x25 mm in size and achieves a bandwidth of 112% from 3-10.6 GHz. It incorporates two window-shaped microstrip closed ring resonators on the ground plane to create dual notch bands. The first notch band from 7-8.1 GHz rejects interference from the X-band downlink of 7.25-7.74 GHz. The second notch band from 8.6-9.4 GHz rejects interference from aeronautical radio navigation systems operating from 8.7-9.2 GHz.
IRJET-Design and Fabrication of Ultra Wide Band Antenna with Band Notching Pr...IRJET Journal
This document provides a review of ultra-wide band antennas with band-notching properties. It discusses how defected ground structures can be used to achieve band notching at specific frequencies like the WLAN band, in order to avoid interference with other wireless systems. Various antenna geometries and feeding techniques that have been studied for achieving ultra-wide bandwidth are summarized. The document reviews several previous studies on microstrip-fed patch antennas, monopole antennas, and defected ground structure antennas designed for ultra-wide bandwidth with frequency band rejections.
Bandwidth enhancement of compact microstrip rectangular antennas for UWB appl...TELKOMNIKA JOURNAL
This document describes the design and simulation of compact microstrip rectangular patch antennas for ultra-wideband applications. The antennas were designed to have good impedance matching over the FCC-defined UWB frequency band of 3.1-10.6 GHz. Defected ground structures were used to improve the bandwidth of the rectangular patch antennas. Simulation results showed the antennas achieved an impedance bandwidth of 133.33% from 3-15 GHz with stable radiation patterns and gains up to 4.9 dBi. Measurements agreed well with simulations and validated the antennas' wide bandwidth performance from 3.1-14.5 GHz, covering the FCC UWB band. The compact antennas are suitable for UWB applications including WLAN, WiMAX
IRJET- Isolation Enhancement of Miniaturized Mimo Antenna with Slotted Gr...IRJET Journal
The document describes a proposed miniaturized ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna system with improved isolation for wireless applications. The antenna system consists of two C-shaped radiating elements on the top layer and two inverted L branches and a line slot etched on the slotted ground plane. Simulation results show the antenna operates from 3.1 GHz to 10.6 GHz with mutual coupling between elements below -10 dB and maximum gain of 4.16 dB. The slotted ground plane enhances miniaturization and reduces mutual coupling between antenna elements for improved isolation.
This document summarizes a research paper that proposes a new design for a wideband microstrip patch antenna. The antenna uses an inverted slotted patch structure fed by a microstrip transmission line to improve bandwidth performance over a conventional microstrip antenna. It operates from 1-12 GHz, showing an impedance bandwidth of over 11 GHz. The design combines techniques such as an inverted patch structure, slotting of the patch, and microstrip line feeding to achieve a compact, low-profile antenna with enhanced bandwidth and high gain for ultra-wideband applications. Key aspects of the antenna's design and operating principles are discussed.
This document describes the design and implementation of a printed monopole antenna for use in the 2.4-2.4835 GHz Industrial Scientific and Medical (ISM) band. It begins with an introduction to wireless communications in the ISM band and the challenges of developing small, low-cost integrated antennas for these applications. It then outlines the methodology for antenna design which includes calculating dimensions, simulation, observation, and hardware implementation. The design specification and steps taken to design the rectangular microstrip patch antenna are provided, including choosing parameters like resonant frequency, dielectric material, and substrate height. Simulation results for parameters like radiation pattern and bandwidth are analyzed. The document concludes that printed monopole antennas are well-suited for ISM band applications
Design of an Elliptical Planar Monopole Antenna for using in Radar-Based and ...IRJET Journal
This document describes the design of an elliptical planar monopole antenna for use in radar-based and ultra-wideband microwave imaging systems. Such systems require antennas that are ultra-wideband, compact, stable, and directive. The designed antenna is an elliptical planar monopole antenna with a parabolic shaped ground structure. Simulation results show that the antenna has a broad frequency bandwidth and stable, directional radiation patterns, making it suitable for use in radar-based ultra-wideband microwave imaging systems. The antenna design process involves optimizing the shape and size of the elliptical patch and ground plane to achieve the desired bandwidth and radiation characteristics.
Analysis and design of a compact ultra-wideband antenna with WLAN and X-band ...IJECEIAES
A compact design of ultra-wideband (UWB) antenna with dual band-notched characteristics are investigated in this paper. The wider impedance bandwidth (from 2.73 to 11.34 GHz) is obtained by using two symmetrical slits in the radiating patch and another slit in the partial ground plane. The dual band-notch rejection at WLAN and X-band downlink satellite communication system are obtained by inserting a modified U-strip on the radiating patch at 5.5 GHz and embedding a pair of single rectangular split ring resonators (SR-SRR) on both sides of the microstrip feed line at 7.5 GHz, respectively. The proposed antenna is simulated and tested using CST MWS high frequency simulator and exhibits the advantages of compact size, simple design and each notched frequency band can be controlled independently by using the geometrical parameters of the corresponding resonator. Therefore, the parametric study is carried out to understand the mutual coupling between the dual band-notched elements. To validate simulation results of our design, a prototype is fabricated and good agreement is achieved between measurement and simulation. Furthermore, a radiation patterns, satisfactory gain, current distribution and VSWR result at the notched frequencies make the proposed antenna a suitable candidate for practical UWB applications.
The document describes the design of a compact circular microstrip patch antenna for WLAN applications in the 5.15-5.825 GHz band. The antenna is designed on an FR-4 substrate with a circular patch of radius 7.62mm fed by a microstrip line. A circular slot is cut from the patch and a square slot is cut from the ground plane to reduce the antenna size and improve performance. Simulation results show the antenna resonates at 5.5 GHz with a bandwidth of 702 MHz and return loss of -31.58 dB. The antenna provides a gain of 3.23 dB, directivity of 4.28 dBi, and efficiency of around 79% at the resonant frequency.
A reconfigurable dual port antenna system for underlay/interweave cognitive ...IJECEIAES
An antenna system that is reconfigurable in frequency is presented in this paper as a novel dual port design that serves both undelay and interweave cognitive radio. This 25×40×0.8 mm3 system is composed of two wide slot antennas: the first is designed as an ultra-wideband (UWB) antenna with controllable band rejection capabilities, while the second antenna is reconfigurable for communication purposes. Three slots are etched into the patch of the UWB antenna to obtain band notching in wireless local area network/Xband/International Telecommunication Union bands (WLAN/Xband/ITU) bands which can be controlled by a positive-intrinsicnegative (PIN) diode across each slot. The configuration states of these three diodes are all useable that produces seven band rejection modes plus the UWB operation mode. The second antenna is configured by five PIN diodes to operate either in Cband, WLAN or Xband regions which results in three interweave modes when setting the first antenna for UWB sensing. The design is simulated by computer simulation technology (CST) v.10. S21 results shows good isolation while input reflection coefficient and realized gain results prove system’s scanning, filtering and communication capabilities. This system is new that it gathers the undelay/interweave operation in a single design and when considering its large number of operation modes it looks adequate for many cognitive radio applications.
1. The document presents a novel rectangular planar ultra-wide band antenna with band-notched characteristics.
2. The proposed antenna design has circular slots in the patch and two stepped corners, along with two inverted L-shaped slots, to reject frequencies from 3.75 to 6.12 GHz.
3. Simulation results show the antenna operates from 2.87 to 11.14 GHz with VSWR less than 2, except in the rejected band, with an impedance bandwidth of 7.18 GHz.
Design and Development of Linearly Polarized Patch Antenna of Circular Shape ...IRJET Journal
This document describes the design and simulation of a circular patch antenna for lower ultra-wideband (UWB) applications ranging from 3.1 GHz to 5.1 GHz. The antenna is designed on an FR-4 substrate with a copper patch and fed using a tapered transmission line for impedance matching. Simulations show the antenna achieves a 10 dB return loss bandwidth of 2 GHz and gain variation of less than 0.8 dBi across the frequency band. The antenna also maintains stable radiation patterns between 3.1 GHz and 5.1 GHz, making it suitable for lower UWB applications such as wireless personal area networks.
A COMPACT FRACTAL ANTENNA FOR 5G MODERN VEHICULAR APPLICATIONIRJET Journal
This document presents a compact fractal antenna designed for 5G vehicular applications. The antenna uses a fractal iterative structure based on a progressive defect patch with a triangular array. It is designed to achieve broadband operation using fractal geometry and a rectangular slot for feeding. Simulation results show the antenna achieves return losses of less than -10dB and high gain across its operating band, making it suitable for applications requiring efficient and directive performance such as 5G vehicular communication. The proposed antenna design is analyzed and its performance is evaluated based on parameters including reflection coefficient, voltage standing wave ratio, impedance, radiation patterns, and gain.
Performance Analysis of Ultra Wideband Communication SystemEditor IJMTER
Ultra-Wideband (UWB) is a radio transmission scheme that uses extremely low power
pulses of radio energy spread across a wide spectrum of frequencies. UWB has several advantages
over conventional continuous wave radio communications including potential support for high data
rates, robustness to multipath interference and fading. The paper covers Ultra Wide-Band
technology. General description, Challenges, various modulation schemes such as OOK, PAM,
PPM, and BPSK under specified Ultra Wide Band regimes: low Power spectral density, large
spreading ratio and a highly dispersive channel. The capacity and BER performance of a single user
ultra wideband communication is investigated for various modulation schemes and coded, uncoded
methods also simulated. Fading channel like Ricean and Rayleigh are compared. Channelized digital
receiver concept is discussed.
This document describes a dual-band microstrip patch antenna designed for wireless local area network (WLAN) applications. The antenna consists of an L-shaped element and an E-shaped element printed on an FR4 substrate to generate two resonant modes at around 2.4 GHz and 6 GHz, covering the lower and higher WLAN bands. A microstrip stub is also introduced for impedance matching, which improves the gain and radiation efficiency. The antenna was simulated using Ansoft HFSS and achieved return losses of -38.08 dB and -40.74 dB at 2.4 GHz and 6 GHz respectively, demonstrating dual-band operation for WLAN systems.
Review Paper on Design of Integrated Multi-Band UWB Antenna for Wireless Appl...IRJET Journal
The document reviews different techniques for designing an integrated multi-band UWB antenna for wireless applications. It summarizes several papers that propose designs for antennas covering various combinations of lower frequency bands (e.g. Bluetooth, GSM, WLAN) in addition to the ultra-wideband range. The key techniques discussed are modifying a base UWB antenna design by adding resonant strips or etching notches to achieve additional frequency bands. One design example presented combines a diamond-shaped UWB patch antenna with quarter-wavelength resonant strips to create a quad-band antenna covering GPS, GSM, WLAN and UWB bands. Another example integrates Bluetooth and GSM bands into a circular UWB antenna using a circular arc and rectangular strip
DESIGN OF A COMPACT CIRCULAR MICROSTRIP PATCH ANTENNA FOR WLAN APPLICATIONSpijans
This paper presents the design of a compact circular microstrip patch antenna for WLAN applications
which covers the band 5.15 to 5.825 GHz. The antenna is designed using 1.4mm thick FR-4
(lossy)substrate with relative permittivity 4.4 and a microstrip line feed is used. The radius of the
circular patch is chosen as 7.62mm. To reduce the size and enhance the performance of the proposed
antenna, a circular slot is loaded on circular patch and a square slot is etched on the ground plane of
dimension 30mm×30mm. Design of the antenna is carried out using CST Microsoft Studio Sonimulation
Software. The proposed antenna resonates at 5.5 GHz with a wider bandwidth of 702 MHz and it provides
low return loss of -31.58 dB, good gain of 3.23 dB and directivity of 4.28 dBi and high efficiency of around
79% against the resonance frequency. The geometry of the proposed circular antenna with reduced size
and its various performance parameters such as return loss, bandwidth, VSWR, gain, directivity, efficiency
and radiation pattern plots are presented and discussed.
DESIGN OF A COMPACT CIRCULAR MICROSTRIP PATCH ANTENNA FOR WLAN APPLICATIONSpijans
This paper presents the design of a compact circular microstrip patch antenna for WLAN applications
which covers the band 5.15 to 5.825 GHz. The antenna is designed using 1.4mm thick FR-4
(lossy)substrate with relative permittivity 4.4 and a microstrip line feed is used. The radius of the
circular patch is chosen as 7.62mm. To reduce the size and enhance the performance of the proposed
antenna, a circular slot is loaded on circular patch and a square slot is etched on the ground plane of
dimension 30mm×30mm. Design of the antenna is carried out using CST Microsoft Studio Sonimulation
Software. The proposed antenna resonates at 5.5 GHz with a wider bandwidth of 702 MHz and it provides
low return loss of -31.58 dB, good gain of 3.23 dB and directivity of 4.28 dBi and high efficiency of around
79% against the resonance frequency. The geometry of the proposed circular antenna with reduced size
and its various performance parameters such as return loss, bandwidth, VSWR, gain, directivity, efficiency
and radiation pattern plots are presented and discussed
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
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This document summarizes a research paper that proposes a new wideband millimeter-wave substrate integrated waveguide (SIW) cavity-backed patch antenna for satellite communications applications from 31-36 GHz. The antenna is designed using computer simulation technology software. Simulation results show the antenna achieves good reflection coefficient (below -10 dB) across the target frequency range, as well as high efficiency (80%) and gain (8.87 dBi). This new antenna design covers all applications within the 31-36 GHz range using SIW technology for its benefits of low cost, simple integration, and improved radiation efficiency compared to other planar feeding structures.
Meta-surface (frequency selective surface) loaded high gain directional ante...IJECEIAES
In this work, a meta-surface (frequency selective surface) loaded high gain directional antenna system is presented. The antenna system is developed using ultra-wideband (UWB) antenna element and meta-surface reflector. The UWB antenna element is designed and simulated without meta-surface reflector. The UWB antenna element has poor impedance bandwidth and directivity. A meta-surface is created using unit cell and equal in the size of the antenna substrate. The meta-surface is placed over the UWB antenna element at optimized height (H=30 mm). The impedance bandwidth, directivity and gain of the proposed antenna are improved by the meta-surface reflector. The proposed antenna is fabricated and experimentally validated by the comparison of the simulated and measured results. The antenna has 3 to 6 GHz wide impedance bandwidth, more than 5 dBi gain and maximum 4.6 dBi directivity at 3.5 GHz frequency. Performance of the proposed antenna is also compared with existing carried out work. Comparatively, the proposed antenna with high directivity is most suitable for IEEE 802.15.4a UWB wireless sensor network (WSN) security application.
A miniaturized printed UWB antenna with dual notching for X-b and and aeronau...TELKOMNIKA JOURNAL
This document presents a miniaturized printed ultra-wideband (UWB) microstrip antenna with dual notched bands for X-band and aeronautical radio navigation applications. The antenna is 19x25 mm in size and achieves a bandwidth of 112% from 3-10.6 GHz. It incorporates two window-shaped microstrip closed ring resonators on the ground plane to create dual notch bands. The first notch band from 7-8.1 GHz rejects interference from the X-band downlink of 7.25-7.74 GHz. The second notch band from 8.6-9.4 GHz rejects interference from aeronautical radio navigation systems operating from 8.7-9.2 GHz.
IRJET-Design and Fabrication of Ultra Wide Band Antenna with Band Notching Pr...IRJET Journal
This document provides a review of ultra-wide band antennas with band-notching properties. It discusses how defected ground structures can be used to achieve band notching at specific frequencies like the WLAN band, in order to avoid interference with other wireless systems. Various antenna geometries and feeding techniques that have been studied for achieving ultra-wide bandwidth are summarized. The document reviews several previous studies on microstrip-fed patch antennas, monopole antennas, and defected ground structure antennas designed for ultra-wide bandwidth with frequency band rejections.
Bandwidth enhancement of compact microstrip rectangular antennas for UWB appl...TELKOMNIKA JOURNAL
This document describes the design and simulation of compact microstrip rectangular patch antennas for ultra-wideband applications. The antennas were designed to have good impedance matching over the FCC-defined UWB frequency band of 3.1-10.6 GHz. Defected ground structures were used to improve the bandwidth of the rectangular patch antennas. Simulation results showed the antennas achieved an impedance bandwidth of 133.33% from 3-15 GHz with stable radiation patterns and gains up to 4.9 dBi. Measurements agreed well with simulations and validated the antennas' wide bandwidth performance from 3.1-14.5 GHz, covering the FCC UWB band. The compact antennas are suitable for UWB applications including WLAN, WiMAX
IRJET- Isolation Enhancement of Miniaturized Mimo Antenna with Slotted Gr...IRJET Journal
The document describes a proposed miniaturized ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna system with improved isolation for wireless applications. The antenna system consists of two C-shaped radiating elements on the top layer and two inverted L branches and a line slot etched on the slotted ground plane. Simulation results show the antenna operates from 3.1 GHz to 10.6 GHz with mutual coupling between elements below -10 dB and maximum gain of 4.16 dB. The slotted ground plane enhances miniaturization and reduces mutual coupling between antenna elements for improved isolation.
This document summarizes a research paper that proposes a new design for a wideband microstrip patch antenna. The antenna uses an inverted slotted patch structure fed by a microstrip transmission line to improve bandwidth performance over a conventional microstrip antenna. It operates from 1-12 GHz, showing an impedance bandwidth of over 11 GHz. The design combines techniques such as an inverted patch structure, slotting of the patch, and microstrip line feeding to achieve a compact, low-profile antenna with enhanced bandwidth and high gain for ultra-wideband applications. Key aspects of the antenna's design and operating principles are discussed.
This document describes the design and implementation of a printed monopole antenna for use in the 2.4-2.4835 GHz Industrial Scientific and Medical (ISM) band. It begins with an introduction to wireless communications in the ISM band and the challenges of developing small, low-cost integrated antennas for these applications. It then outlines the methodology for antenna design which includes calculating dimensions, simulation, observation, and hardware implementation. The design specification and steps taken to design the rectangular microstrip patch antenna are provided, including choosing parameters like resonant frequency, dielectric material, and substrate height. Simulation results for parameters like radiation pattern and bandwidth are analyzed. The document concludes that printed monopole antennas are well-suited for ISM band applications
Design of an Elliptical Planar Monopole Antenna for using in Radar-Based and ...IRJET Journal
This document describes the design of an elliptical planar monopole antenna for use in radar-based and ultra-wideband microwave imaging systems. Such systems require antennas that are ultra-wideband, compact, stable, and directive. The designed antenna is an elliptical planar monopole antenna with a parabolic shaped ground structure. Simulation results show that the antenna has a broad frequency bandwidth and stable, directional radiation patterns, making it suitable for use in radar-based ultra-wideband microwave imaging systems. The antenna design process involves optimizing the shape and size of the elliptical patch and ground plane to achieve the desired bandwidth and radiation characteristics.
Analysis and design of a compact ultra-wideband antenna with WLAN and X-band ...IJECEIAES
A compact design of ultra-wideband (UWB) antenna with dual band-notched characteristics are investigated in this paper. The wider impedance bandwidth (from 2.73 to 11.34 GHz) is obtained by using two symmetrical slits in the radiating patch and another slit in the partial ground plane. The dual band-notch rejection at WLAN and X-band downlink satellite communication system are obtained by inserting a modified U-strip on the radiating patch at 5.5 GHz and embedding a pair of single rectangular split ring resonators (SR-SRR) on both sides of the microstrip feed line at 7.5 GHz, respectively. The proposed antenna is simulated and tested using CST MWS high frequency simulator and exhibits the advantages of compact size, simple design and each notched frequency band can be controlled independently by using the geometrical parameters of the corresponding resonator. Therefore, the parametric study is carried out to understand the mutual coupling between the dual band-notched elements. To validate simulation results of our design, a prototype is fabricated and good agreement is achieved between measurement and simulation. Furthermore, a radiation patterns, satisfactory gain, current distribution and VSWR result at the notched frequencies make the proposed antenna a suitable candidate for practical UWB applications.
The document describes the design of a compact circular microstrip patch antenna for WLAN applications in the 5.15-5.825 GHz band. The antenna is designed on an FR-4 substrate with a circular patch of radius 7.62mm fed by a microstrip line. A circular slot is cut from the patch and a square slot is cut from the ground plane to reduce the antenna size and improve performance. Simulation results show the antenna resonates at 5.5 GHz with a bandwidth of 702 MHz and return loss of -31.58 dB. The antenna provides a gain of 3.23 dB, directivity of 4.28 dBi, and efficiency of around 79% at the resonant frequency.
A reconfigurable dual port antenna system for underlay/interweave cognitive ...IJECEIAES
An antenna system that is reconfigurable in frequency is presented in this paper as a novel dual port design that serves both undelay and interweave cognitive radio. This 25×40×0.8 mm3 system is composed of two wide slot antennas: the first is designed as an ultra-wideband (UWB) antenna with controllable band rejection capabilities, while the second antenna is reconfigurable for communication purposes. Three slots are etched into the patch of the UWB antenna to obtain band notching in wireless local area network/Xband/International Telecommunication Union bands (WLAN/Xband/ITU) bands which can be controlled by a positive-intrinsicnegative (PIN) diode across each slot. The configuration states of these three diodes are all useable that produces seven band rejection modes plus the UWB operation mode. The second antenna is configured by five PIN diodes to operate either in Cband, WLAN or Xband regions which results in three interweave modes when setting the first antenna for UWB sensing. The design is simulated by computer simulation technology (CST) v.10. S21 results shows good isolation while input reflection coefficient and realized gain results prove system’s scanning, filtering and communication capabilities. This system is new that it gathers the undelay/interweave operation in a single design and when considering its large number of operation modes it looks adequate for many cognitive radio applications.
1. The document presents a novel rectangular planar ultra-wide band antenna with band-notched characteristics.
2. The proposed antenna design has circular slots in the patch and two stepped corners, along with two inverted L-shaped slots, to reject frequencies from 3.75 to 6.12 GHz.
3. Simulation results show the antenna operates from 2.87 to 11.14 GHz with VSWR less than 2, except in the rejected band, with an impedance bandwidth of 7.18 GHz.
Design and Development of Linearly Polarized Patch Antenna of Circular Shape ...IRJET Journal
This document describes the design and simulation of a circular patch antenna for lower ultra-wideband (UWB) applications ranging from 3.1 GHz to 5.1 GHz. The antenna is designed on an FR-4 substrate with a copper patch and fed using a tapered transmission line for impedance matching. Simulations show the antenna achieves a 10 dB return loss bandwidth of 2 GHz and gain variation of less than 0.8 dBi across the frequency band. The antenna also maintains stable radiation patterns between 3.1 GHz and 5.1 GHz, making it suitable for lower UWB applications such as wireless personal area networks.
A COMPACT FRACTAL ANTENNA FOR 5G MODERN VEHICULAR APPLICATIONIRJET Journal
This document presents a compact fractal antenna designed for 5G vehicular applications. The antenna uses a fractal iterative structure based on a progressive defect patch with a triangular array. It is designed to achieve broadband operation using fractal geometry and a rectangular slot for feeding. Simulation results show the antenna achieves return losses of less than -10dB and high gain across its operating band, making it suitable for applications requiring efficient and directive performance such as 5G vehicular communication. The proposed antenna design is analyzed and its performance is evaluated based on parameters including reflection coefficient, voltage standing wave ratio, impedance, radiation patterns, and gain.
Performance Analysis of Ultra Wideband Communication SystemEditor IJMTER
Ultra-Wideband (UWB) is a radio transmission scheme that uses extremely low power
pulses of radio energy spread across a wide spectrum of frequencies. UWB has several advantages
over conventional continuous wave radio communications including potential support for high data
rates, robustness to multipath interference and fading. The paper covers Ultra Wide-Band
technology. General description, Challenges, various modulation schemes such as OOK, PAM,
PPM, and BPSK under specified Ultra Wide Band regimes: low Power spectral density, large
spreading ratio and a highly dispersive channel. The capacity and BER performance of a single user
ultra wideband communication is investigated for various modulation schemes and coded, uncoded
methods also simulated. Fading channel like Ricean and Rayleigh are compared. Channelized digital
receiver concept is discussed.
This document describes a dual-band microstrip patch antenna designed for wireless local area network (WLAN) applications. The antenna consists of an L-shaped element and an E-shaped element printed on an FR4 substrate to generate two resonant modes at around 2.4 GHz and 6 GHz, covering the lower and higher WLAN bands. A microstrip stub is also introduced for impedance matching, which improves the gain and radiation efficiency. The antenna was simulated using Ansoft HFSS and achieved return losses of -38.08 dB and -40.74 dB at 2.4 GHz and 6 GHz respectively, demonstrating dual-band operation for WLAN systems.
Review Paper on Design of Integrated Multi-Band UWB Antenna for Wireless Appl...IRJET Journal
The document reviews different techniques for designing an integrated multi-band UWB antenna for wireless applications. It summarizes several papers that propose designs for antennas covering various combinations of lower frequency bands (e.g. Bluetooth, GSM, WLAN) in addition to the ultra-wideband range. The key techniques discussed are modifying a base UWB antenna design by adding resonant strips or etching notches to achieve additional frequency bands. One design example presented combines a diamond-shaped UWB patch antenna with quarter-wavelength resonant strips to create a quad-band antenna covering GPS, GSM, WLAN and UWB bands. Another example integrates Bluetooth and GSM bands into a circular UWB antenna using a circular arc and rectangular strip
DESIGN OF A COMPACT CIRCULAR MICROSTRIP PATCH ANTENNA FOR WLAN APPLICATIONSpijans
This paper presents the design of a compact circular microstrip patch antenna for WLAN applications
which covers the band 5.15 to 5.825 GHz. The antenna is designed using 1.4mm thick FR-4
(lossy)substrate with relative permittivity 4.4 and a microstrip line feed is used. The radius of the
circular patch is chosen as 7.62mm. To reduce the size and enhance the performance of the proposed
antenna, a circular slot is loaded on circular patch and a square slot is etched on the ground plane of
dimension 30mm×30mm. Design of the antenna is carried out using CST Microsoft Studio Sonimulation
Software. The proposed antenna resonates at 5.5 GHz with a wider bandwidth of 702 MHz and it provides
low return loss of -31.58 dB, good gain of 3.23 dB and directivity of 4.28 dBi and high efficiency of around
79% against the resonance frequency. The geometry of the proposed circular antenna with reduced size
and its various performance parameters such as return loss, bandwidth, VSWR, gain, directivity, efficiency
and radiation pattern plots are presented and discussed.
DESIGN OF A COMPACT CIRCULAR MICROSTRIP PATCH ANTENNA FOR WLAN APPLICATIONSpijans
This paper presents the design of a compact circular microstrip patch antenna for WLAN applications
which covers the band 5.15 to 5.825 GHz. The antenna is designed using 1.4mm thick FR-4
(lossy)substrate with relative permittivity 4.4 and a microstrip line feed is used. The radius of the
circular patch is chosen as 7.62mm. To reduce the size and enhance the performance of the proposed
antenna, a circular slot is loaded on circular patch and a square slot is etched on the ground plane of
dimension 30mm×30mm. Design of the antenna is carried out using CST Microsoft Studio Sonimulation
Software. The proposed antenna resonates at 5.5 GHz with a wider bandwidth of 702 MHz and it provides
low return loss of -31.58 dB, good gain of 3.23 dB and directivity of 4.28 dBi and high efficiency of around
79% against the resonance frequency. The geometry of the proposed circular antenna with reduced size
and its various performance parameters such as return loss, bandwidth, VSWR, gain, directivity, efficiency
and radiation pattern plots are presented and discussed
Similar to Recent Advances in Ultra-Wideband Antenna Design: A Review (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
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Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
Digital Twins Computer Networking Paper Presentation.pptxaryanpankaj78
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Open Channel Flow: fluid flow with a free surfaceIndrajeet sahu
Open Channel Flow: This topic focuses on fluid flow with a free surface, such as in rivers, canals, and drainage ditches. Key concepts include the classification of flow types (steady vs. unsteady, uniform vs. non-uniform), hydraulic radius, flow resistance, Manning's equation, critical flow conditions, and energy and momentum principles. It also covers flow measurement techniques, gradually varied flow analysis, and the design of open channels. Understanding these principles is vital for effective water resource management and engineering applications.
Determination of Equivalent Circuit parameters and performance characteristic...pvpriya2
Includes the testing of induction motor to draw the circle diagram of induction motor with step wise procedure and calculation for the same. Also explains the working and application of Induction generator
Supermarket Management System Project Report.pdfKamal Acharya
Supermarket management is a stand-alone J2EE using Eclipse Juno program.
This project contains all the necessary required information about maintaining
the supermarket billing system.
The core idea of this project to minimize the paper work and centralize the
data. Here all the communication is taken in secure manner. That is, in this
application the information will be stored in client itself. For further security the
data base is stored in the back-end oracle and so no intruders can access it.
Road construction is not as easy as it seems to be, it includes various steps and it starts with its designing and
structure including the traffic volume consideration. Then base layer is done by bulldozers and levelers and after
base surface coating has to be done. For giving road a smooth surface with flexibility, Asphalt concrete is used.
Asphalt requires an aggregate sub base material layer, and then a base layer to be put into first place. Asphalt road
construction is formulated to support the heavy traffic load and climatic conditions. It is 100% recyclable and
saving non renewable natural resources.
With the advancement of technology, Asphalt technology gives assurance about the good drainage system and with
skid resistance it can be used where safety is necessary such as outsidethe schools.
The largest use of Asphalt is for making asphalt concrete for road surfaces. It is widely used in airports around the
world due to the sturdiness and ability to be repaired quickly, it is widely used for runways dedicated to aircraft
landing and taking off. Asphalt is normally stored and transported at 150’C or 300’F temperature
A high-Speed Communication System is based on the Design of a Bi-NoC Router, ...DharmaBanothu
The Network on Chip (NoC) has emerged as an effective
solution for intercommunication infrastructure within System on
Chip (SoC) designs, overcoming the limitations of traditional
methods that face significant bottlenecks. However, the complexity
of NoC design presents numerous challenges related to
performance metrics such as scalability, latency, power
consumption, and signal integrity. This project addresses the
issues within the router's memory unit and proposes an enhanced
memory structure. To achieve efficient data transfer, FIFO buffers
are implemented in distributed RAM and virtual channels for
FPGA-based NoC. The project introduces advanced FIFO-based
memory units within the NoC router, assessing their performance
in a Bi-directional NoC (Bi-NoC) configuration. The primary
objective is to reduce the router's workload while enhancing the
FIFO internal structure. To further improve data transfer speed,
a Bi-NoC with a self-configurable intercommunication channel is
suggested. Simulation and synthesis results demonstrate
guaranteed throughput, predictable latency, and equitable
network access, showing significant improvement over previous
designs