Techniques for Improving Element Bandwidth
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This document discusses several techniques for improving the bandwidth of microstrip antennas. It describes using impedance matching and increasing substrate thickness to cancel inductive effects. It also discusses using proximity coupling with a small open tuning stub to provide broad bandwidth without excess substrate thickness. Additionally, it covers using two electromagnetically coupled resonant patches to extend bandwidth from 10 to 20% and using a strip-slot-foam-inverted-patch design with slot size and foam substrate to achieve over 20% bandwidth.
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The Hall effect produces a voltage difference across a current-carrying conductor placed in a magnetic field. It was discovered in 1879 by Edwin Hall. When charges flow through a conductor, the Lorentz force causes electrons and holes to separate, producing an electric field perpendicular to the current and magnetic field. This Hall voltage can be used to determine properties of the conductor like carrier type and density. Modern applications of Hall effect sensors include current sensors, motor control, magnetometers, and blood flow measurement.
Electromagnetic induction (2)
1) Electromagnetic induction occurs when there is a change in magnetic flux through a conductor. This can be caused by moving a magnet or coil, changing the area inside the magnetic field, or altering the number of turns in the coil.
2) The size of the induced emf depends on the speed of movement and strength of the magnetic field. A greater number of coil turns or larger area swept out also increases the induced emf.
3) Lenz's law states that the direction of the induced current will oppose the change causing it, as represented by a negative sign in the equation relating emf to the rate of change of magnetic flux linkage.
Determination of the transient open circuit time constant
This document provides procedures for determining the direct-axis transient open-circuit time constant (τBdoB ́) and direct-axis open-circuit subtransient time constant (τBdoB ́ ́) of synchronous machines. Two methods are described: the voltage recovery test and the field current decay test. The voltage recovery test involves reopening the circuit breaker after a sustained three-phase short circuit to initiate voltage recovery, which is then recorded. The field current decay test involves suddenly short-circuiting the excitation winding while the machine is operating at rated speed and voltage to cause the field current to decay, which is then recorded. Both tests are evaluated mathematically or graphically to determine the time constants.
Out-of-Core Construction of Sparse Voxel Octrees
Voxel-based rendering has recently received significant attention due to its potential in the context of efficiently rendering massively large and highly detailed scenes. Unfortunately, few or no scenes are available in the form of sparse voxel octrees. In this paper, we present an out-of-core algorithm for constructing a sparse voxel octree from a triangle mesh. Our algorithm allows the input triangle mesh, the output sparse voxel octree, and, most importantly, the intermediate high-resolution 3D voxel grid, to be larger than available memory. We demonstrate that our out-of-core algorithm can construct sparse voxel octrees from triangle meshes using only a fraction of the memory required by an in-core algorithm in roughly the same time, and that our out-of-core algorithm can also handle extremely large triangle meshes.
3.8 the 1931 cie s ystem
The document discusses the CIE standard colorimetric system. It explains that the CIE had to define standard primaries, light sources, and a standard observer to establish a uniform color specification system. It describes how the CIE chose the primary colors, standard illuminants A, B, and C, viewing geometry, and normalized the tristimulus values between 0-100 to establish a unified color space. The CIE system separates the properties of a color sample from the light source to account for differences in intensity and spectrum.
Faraday's law 333
This document discusses electromagnetic induction and Faraday's law of induction. It begins by defining magnetic flux and provides the mathematical expression for it. It then introduces Faraday's law, which states that the induced electromotive force (emf) in a circuit is equal to the negative rate of change of magnetic flux through the circuit. The document explains magnetic flux in more detail and discusses some examples of electromagnetic induction, including its application in generators and magnetic recording. The key point is that a changing magnetic field produces an electric field based on Faraday's law of induction.
Ch10 ln
This chapter describes RC circuits and their behavior when a sinusoidal voltage is applied. Key points include: the current in an RC circuit leads the source voltage; resistor voltage is in phase with current while capacitor voltage lags current by 90 degrees; impedance of a series RC circuit decreases with increasing frequency while the phase angle decreases; and RC circuits can be used as phase shifters or filters.
Significant Figures
This document discusses significant figures in measurements and calculations. It makes three key points:
1. Significant figures in a measurement include all known digits plus one estimated digit and indicate the precision or uncertainty in the measurement.
2. Rules are provided for determining which digits are significant, depending on their position relative to other digits and the decimal point.
3. Calculations must be rounded according to whether addition/subtraction or multiplication/division was used, and based on the least precise term (fewest significant figures).
CAT
CAT/CT scans use X-rays and computers to create cross-sectional images of the body. They can be used to diagnose many conditions by detecting abnormalities in soft tissues and bones. During a scan, an X-ray tube rotates around the patient, emitting a thin beam that is combined with readings from an array of detectors to construct images of the body's internal structures and organs. CT scans provide more detailed information than plain X-rays and have largely replaced conventional radiography for many diagnostic tasks.
Medical physics slide show
This document discusses various medical scanning technologies that rely on principles of physics, including x-rays, CT scans, MRI scans, PET scans, and MEG scans. It provides information on how each works, such as that x-rays use electromagnetic waves that can pass through skin but are absorbed by bone, allowing doctors to see inside the body. The document also notes some advantages and disadvantages of different scans, like that x-rays are easy to produce but may not provide detailed images of soft tissues. The overall message is that physics concepts are essential to developing many medical scanning technologies used today.
Medical applications of nuclear physics
Nuclear physics has led to several important medical applications of diagnostic imaging and cancer treatment. Computerized axial tomography (CAT or CT) scans use X-rays to produce cross-sectional images of the body with high resolution. Positron emission tomography (PET) scans use radioactive tracers injected into the body to detect metabolic activity and locate tumors. Magnetic resonance imaging (MRI) uses powerful magnets and radio waves to generate detailed images of soft tissues without using ionizing radiation. Radiation therapies like gamma knife radiosurgery, linear accelerators, and proton therapy also apply principles of nuclear physics to precisely target high doses of radiation to cancerous tumors.
AC & DC Generators
A Project made for my School in the 10th Grade explaining the differences and working of AC and DC Generators.
Contents:
-Introduction
-Electromagnetic induction
-EMF- Electromotive Force
-Fleming’s Right Hand Rule
-Components of a Generator
*Rotor
*Armature
*Coil
*Stator
*Field electromagnets
*Brushes
-A.C. generators
-Commercial A.C generators
-DC generators
-Principle
-Working
-Differences between AC and DC
Mechanical sensor
This document discusses various types of mechanical sensors and their applications. It describes sensors that measure mechanical phenomena like pressure, force, torque, inertia, and flow. Pressure sensors are used in applications like manometers, barometers, microphones, and automotive parts. Force and torque sensors can be used in control systems, testing equipment, and for measuring power transmission. Inertial sensors like accelerometers have applications in industry, military, vibration monitoring, and safety systems. Flow sensors measure flow rates using principles of heat transfer and are used in microsensors and velocimetry applications. The document provides details on common sensing techniques like piezoresistivity, piezoelectricity, capacitive, inductive and resonant techniques.
Physics (significant figures)
This document provides information on numerical concepts in physics such as:
1) Determining the number of significant figures in measurements and calculations.
2) Converting numbers between normal and scientific notation.
3) Using unit analysis to convert between different units of measurement like centimeters to meters.
It defines key terms like significant figures and scientific notation. It also provides examples of operations using significant figures and scientific notation, as well as guidelines for unit conversions between the metric system and other units.
Magnetic field sensing
This document provides an overview of magnetic field sensing and different types of magnetic sensors. It begins with definitions of sensors and detectable phenomena. It then discusses various physical principles that magnetic sensors utilize, like Ampere's law and Faraday's law of induction. The document reviews the need for sensors and factors in choosing a sensor. It provides a market analysis of the magnetic sensor industry and examples of applications. Finally, it describes various types of magnetic sensors in more detail, including vector magnetometers, total field magnetometers, search-coil magnetometers, fluxgate magnetometers, and superconducting quantum interference device (SQUID) magnetometers.
Electromagnetic Induction Class 12
1. Electromagnetic induction occurs when a changing magnetic flux induces an electromotive force (emf) in a circuit. This was discovered by Faraday through his experiments.
2. Faraday's laws of induction state that an emf is induced in a circuit when the magnetic flux through the circuit changes, and that the magnitude of this induced emf is proportional to the rate of change of the magnetic flux.
3. Lenz's law describes the direction of the induced current: the current will flow in a direction that creates its own magnetic field to oppose the original change in magnetic flux that caused it. This ensures the conservation of energy.
Capacitance and capacitor
1) Capacitance refers to an object's ability to store electrical charge. A capacitor consists of conducting plates separated by an insulator and is used to store electrical energy.
2) The capacitance of a parallel plate capacitor depends on the plate area, distance between plates, and the dielectric material between the plates - with larger areas, smaller distances, and higher-permittivity dielectrics increasing capacitance.
3) When a dielectric is placed in a capacitor, it polarizes under the electric field and reduces the overall field strength. This lowers the voltage needed to store a given charge, effectively increasing the capacitor's capacitance.
Operational Amplifier (OpAmp)
1. The op-amp circuit consists of an input stage, intermediate stage, and output stage, as well as biasing circuits.
2. The input stage uses a differential amplifier configuration to provide high input impedance. The intermediate stage provides voltage gain.
3. The output stage is typically class AB to reduce crossover distortion, using a voltage source to provide constant base voltage for the transistors.
Brain vascular anatomy with MRA and MRI correlation
This document provides an overview of the vascular anatomy of the brain. It discusses the arterial supply, venous drainage, and dural venous sinuses of the brain. For arterial supply, it describes the anterior and posterior circulations, including the internal carotid, vertebral, basilar, anterior cerebral, middle cerebral, and posterior cerebral arteries. It also discusses branches and territories of these vessels. For venous drainage, it outlines the internal cerebral veins and external cerebral veins, as well as dural venous sinuses such as the superior sagittal sinus. Watershed zones and vascular territories on cross sections are also depicted.
CT ITS BASIC PHYSICS
Computed tomography (CT) uses computer-processed X-rays to create cross-sectional images of the body. CT works by rotating an X-ray tube and detectors around the patient, acquiring multiple transmission measurements at different angles to reconstruct a 3D image. Image reconstruction involves algorithms like back projection and filtered back projection that use the transmission data to calculate the attenuation coefficients of different tissues and generate tomographic images representing slices of the body. CT numbers, measured in Hounsfield units, provide standardized values related to tissue density and visibility.
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Determination of the transient open circuit time constant
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Similar to Techniques for Improving Element Bandwidth
Micro strip Antenna
The document discusses microstrip patch antennas. It provides details on:
1) Different types of microstrip antennas including shapes, substrates, and array configurations. Rectangular, circular, and other patch shapes are described. Common substrates like honeycomb, Duroid, and quartz are listed.
2) Design considerations for microstrip antennas like calculating patch length and width based on resonant frequency and dielectric properties. Parameters that affect performance are explained.
3) Feeding techniques for exciting microstrip patches including microstrip line, coaxial probe, aperture coupled, and proximity coupling feeds. Advantages of each technique are summarized.
Study On The Improvement Of Bandwidth Of A Rectangular Microstrip Patch Antenna
Microstrip antennas or patch antennas are popular for their attractive features such as low profile,
low weight, low cost, ease of fabrication and integration with RF devices. Micro strip antennas have been found
favorable because they are inexpensive to manufacture and compatible with monolithic microwave integrated
circuit designs (MMIC). They are usually employed at UHF and higher frequencies because the size of the
antenna is directly tied to the wavelength at the resonance frequency. A Microstrip or patch antenna is a
narrowband, wide-beam antenna fabricated by etching the antenna element pattern in metal trace bonded to an
insulating dielectric substrate with a continuous metal layer bonded to the opposite side of the substrate which
forms a ground plane. The most commonly employed microstrip antenna is a rectangular patch.
The major disadvantages of Microstrip antennas are lower gain and very narrow bandwidth. Microstrip patch
antennas have some drawbacks of low efficiency, narrow bandwidth (3-6%) of the central frequency. Millimeter
wave technology being an emerging area is still much undeveloped. As micro strip antennas have found wide
variety of application areas, a number of techniques are evolved to improve its limited bandwidth. A good
approach to improve the bandwidth is increasing the thickness of substrate supporting the micro strip patch.
However problems exist on the ability to effectively feed the patch on a thick substrate and the radiation
efficiency can degrade with increasing substrate thickness. A substantial research needs to be done in this area
as its applications are numerous. The radiation patterns and S11 performance are used for the analysis of the
different configurations. In the present endeavor a rectangular patch antenna is designed on thick substrate and simulated using MATLAB software and configuration on different dielectric susbstrates was used .
Study On The Improvement Of Bandwidth Of A Rectangular Microstrip Patch Antenna
Abstract : Microstrip antennas or patch antennas are popular for their attractive features such as low profile, low weight, low cost, ease of fabrication and integration with RF devices. Micro strip antennas have been found favorable because they are inexpensive to manufacture and compatible with monolithic microwave integrated circuit designs (MMIC). They are usually employed at UHF and higher frequencies because the size of the antenna is directly tied to the wavelength at the resonance frequency. A Microstrip or patch antenna is a narrowband, wide-beam antenna fabricated by etching the antenna element pattern in metal trace bonded to an insulating dielectric substrate with a continuous metal layer bonded to the opposite side of the substrate which forms a ground plane. The most commonly employed microstrip antenna is a rectangular patch. The major disadvantages of Microstrip antennas are lower gain and very narrow bandwidth. Microstrip patch antennas have some drawbacks of low efficiency, narrow bandwidth (3-6%) of the central frequency. Millimeter wave technology being an emerging area is still much undeveloped. As micro strip antennas have found wide variety of application areas, a number of techniques are evolved to improve its limited bandwidth. A good approach to improve the bandwidth is increasing the thickness of substrate supporting the micro strip patch. However problems exist on the ability to effectively feed the patch on a thick substrate and the radiation efficiency can degrade with increasing substrate thickness. A substantial research needs to be done in this area as its applications are numerous. The radiation patterns and S11 performance are used for the analysis of the different configurations. In the present endeavor a rectangular patch antenna is designed on thick substrate and simulated using MATLAB software and configuration on different dielectric susbstrates was used . Keywords - bandwidth, dielectric constant, Microstrip antennas, substrate thickness
MicroStrip Antenna
MicroStrip Antenna
Introduction .
Micro-Strip Antennas Types .
Micro-Strip Antennas Shapes .
Types of Substrates (Dielectric Media) .
Comparison of various types of flat profile printed antennas .
Advantages & DisAdvantages of MSAs .
Applications of MSAs .
Radiation patterns of MSAs .
How to Optimizing the Substrate Properties for Increased Bandwidth ?
Comparing the different feed techniques .
Enhancement Of Bandwidth and Gain Of Microstrip Patch Antenna
This document discusses techniques to enhance the bandwidth and gain of microstrip patch antennas. Microstrip patch antennas inherently have a narrow bandwidth, which is not sufficient for many wireless communication applications. The document describes several methods to widen the bandwidth, such as using modified patch shapes, planar multi-resonator configurations, multilayer configurations, and stacked multi-resonator designs. It also discusses design considerations like choosing the appropriate substrate material and matching the input impedance. The overall goal is to develop microstrip patch antenna designs with bandwidths over 5-25% to meet the needs of modern wireless systems.
Comparative analyses of enhancing bandwidth of micro strip patch antennas a s...
Comparative analyses of enhancing bandwidth of micro strip patch antennas a s...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and TechnologyFo3410371039
This document describes the simulation and design of a wideband E-shaped microstrip patch antenna that is conformed to a cylindrical surface. Simulation results using HFSS show that decreasing the substrate permittivity and increasing the substrate thickness can increase the antenna bandwidth. Bandwidths over 29 GHz were achieved with a thickness of 2.6 mm using lower permittivity substrates like RO3203 and Teflon. The compact size and ultra wideband performance of this cylindrical E-shaped patch antenna make it suitable for applications like high-speed wireless communication and avionics.
G0362046051
The document compares the performance of two feeding techniques - coaxial probe feed and proximity coupled feed - for a circular microstrip patch antenna operating in the X-band frequency range. Simulation results show that the proximity coupled feed provides a 16.39% increase in bandwidth compared to the coaxial probe feed. The proximity coupled feed also results in better impedance matching and radiation efficiency for the circular microstrip patch antenna.
Aperture by d m pozar
This document provides a review of aperture coupled microstrip antennas. It begins with a brief history, noting the antenna was first introduced in 1985 to address issues with integrated phased arrays using a single substrate layer. The basic operating principles are then described, including how the independent selection of antenna and feed substrate materials allows shielding of the radiating aperture from the feed network. Applications include active arrays and theoretically zero cross polarization. Key development areas are also listed, such as impedance bandwidth improvements from 5-50% and many possible design variations.
A010340105
This document reviews microstrip patch antennas for WLAN and WiMAX applications. It discusses the basics of microstrip antennas including their structure, feeding techniques, advantages and disadvantages. Various methods for improving the bandwidth of microstrip patch antennas are examined, such as using different substrate materials and thicknesses or adding slots to the patch. A comparison table shows how the bandwidth changes with different substrate properties. The document concludes that substrate thickness and dielectric constant influence bandwidth, and techniques like slots can further improve it, making microstrip antennas well-suited for WLAN and WiMAX systems.
08031887.pdf
This document summarizes a research paper that proposes a differentially-fed dual-polarized microstrip patch antenna with bandwidth enhancement. It achieves a wide bandwidth of about 8% while maintaining a low profile of 0.024 free-space wavelengths. This is accomplished by suppressing even-order modes using differential feeding, transforming the radiation pattern of the TM21 mode into broadside radiation with a center slot, and pushing the resonant frequency of the TM01 mode closer to the TM21 mode using shorting pins beneath the patch. The designed antenna was fabricated and tested, and results showed good agreement with simulations in terms of reflection coefficient, radiation pattern, and realized gain.
05382524
This document summarizes and compares two high-gain antenna designs for 60 GHz wireless communication: 1) An aperture coupled patch antenna with a superstrate layer that increases the maximum measured gain to 14.6 dBi while maintaining broad radiation patterns. The superstrate size is critical for optimal performance. 2) A microstrip-fed stacked patch antenna with superstrate that achieves higher bandwidth but 1.3 dB lower maximum gain compared to the first design. Aperture coupling is found to be better for high-gain applications due to its ability to achieve higher gain with a consistent radiation pattern across the band.
Inverted Diamond-shaped Notched Substrate and Patch for High-frequency Interf...
Notches loaded on a patch antenna can affect significantly on the antenna impedance matching. Therefore, notching technique is an efficient way to reduce the electromagnetic interference with unwanted bands. In this paper, a novel inverted diamond - shaped closed-end slot on a substrate and vertexfed printed hexagonal patch ultra - wideband antenna is proposed for highfrequency band rejection. This antenna is fed using coplanar waveguide, and it is optimised by veering several patch parameters which further improved the inter bandwidth at both the lower and upper bands. However, the centrenotched band is shifted from 6GHz to 7.5GHz by cutting the inverted diamond shape in a special process. The developed ultra-wideband antenna is verified by comparing the simulation results with the measurement results. The measured results with a fractional bandwidth of 133% have a good agreement with the simulation results 146%. Moreover, the measured radiation showed omnidirectional patterns.
PureWave White Paper : Multiple Antenna Processing For WiMAX
Wireless operators face a myriad of obstacles, but fundamental to the performance of any system are the propagation characteristics that restrict delivery of signal power, and deployment scenarios that create interference. Broadband applications further exacerbate these problems and continue to create interesting challenges for system designers.
Dual Band Microstrip Antenna
This document summarizes a project on designing a dual band microstrip antenna. It provides an overview of microstrip antennas, including their basic principles and operation, common shapes and feeding techniques. It then describes the design of a circular dual band microstrip antenna with a T-shaped slot to achieve resonance at 2.3 GHz and 5.8 GHz. Simulation results showing return loss, VSWR, and radiation patterns are presented. Potential applications of dual band microstrip antennas in mobile satellite communication systems, wireless LANs, and GPS are also discussed.
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
This document summarizes the design, simulation, fabrication, and testing of a microstrip patch antenna for use in the L-band frequency range of 1-2 GHz. A rectangular patch antenna was designed, modeled in IE3D software using a coaxial feed technique, and optimized to achieve a return loss of -27.439 dB and axial ratio of 0.37 dB at 1.176 GHz. The simulated antenna was then fabricated on an FR-4 substrate and tested, showing measured return loss of -29.752 dB and VSWR of 1.0327, matching well with the simulation results. Radiation patterns and gain were also measured and found to meet design specifications for use in the L-band frequency range.
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
A Microstrip Patch Antenna is a type of radio antenna with a low profile, which can be mounted on a low surface. It is a narrow band, wide-beam fed antenna fabricated by etching the antenna element pattern in metal trace bonded to the dielectric Substrate such as a printed circuit board with a continuous metal layer bonded to the opposite side of the substrate which forms a ground plane. The main aim of this work is to design, develop and test the Printed Circuit antenna (Microstrip Patch antenna) suitable for use in L-band frequency range of 1-2GHz. This study also emphasizes on simulation of micro-strip patch antenna using IE3D software to simulate & study the radiation pattern & other radiation pattern parameters and comparison with specifications/requirements. Co-axial Feed technique was adopted and the location of the feed point was varied within the radiating patch to arrive at the point of minimum return loss. This work is also focused on characterization of fabricated antenna in view of parameters like VSWR, Antenna efficiency, Axial ratio, Gain and radiation pattern.
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
A Microstrip Patch Antenna is a type of radio antenna with a low profile, which can be mounted on a low surface. It is a narrow band, wide-beam fed antenna fabricated by etching the antenna element pattern in metal trace bonded to the dielectric Substrate such as a printed circuit board with a continuous metal layer bonded to the opposite side of the substrate which forms a ground plane. The main aim of this work is to design, develop and test the Printed Circuit antenna (Microstrip Patch antenna) suitable for use in L-band frequency range of 1-2GHz. This study also emphasizes on simulation of micro-strip patch antenna using IE3D software to simulate & study the radiation pattern & other radiation pattern parameters and comparison with specifications/requirements. Co-axial Feed technique was adopted and the location of the feed point was varied within the radiating patch to arrive at the point of minimum return loss. This work is also focused on characterization of fabricated antenna in view of parameters like VSWR, Antenna efficiency, Axial ratio, Gain and radiation pattern.
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
A Microstrip Patch Antenna is a type of radio antenna with a low profile, which can be mounted on a low
surface. It is a narrow band, wide-beam fed antenna fabricated by etching the antenna element pattern in
metal trace bonded to the dielectric Substrate such as a printed circuit board with a continuous metal layer
bonded to the opposite side of the substrate which forms a ground plane. The main aim of this work is to
design, develop and test the Printed Circuit antenna (Microstrip Patch antenna) suitable for use in L-band
frequency range of 1-2GHz. This study also emphasizes on simulation of micro-strip patch antenna using
IE3D software to simulate & study the radiation pattern & other radiation pattern parameters and
comparison with specifications/requirements. Co-axial Feed technique was adopted and the location of the
feed point was varied within the radiating patch to arrive at the point of minimum return loss. This work is
also focused on characterization of fabricated antenna in view of parameters like VSWR, Antenna
efficiency, Axial ratio, Gain and radiation pattern.
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
A Microstrip Patch Antenna is a type of radio antenna with a low profile, which can be mounted on a low surface. It is a narrow band, wide-beam fed antenna fabricated by etching the antenna element pattern in metal trace bonded to the dielectric Substrate such as a printed circuit board with a continuous metal layer bonded to the opposite side of the substrate which forms a ground plane. The main aim of this work is to design, develop and test the Printed Circuit antenna (Microstrip Patch antenna) suitable for use in L-band frequency range of 1-2GHz. This study also emphasizes on simulation of micro-strip patch antenna using IE3D software to simulate & study the radiation pattern & other radiation pattern parameters and comparison with specifications/requirements. Co-axial Feed technique was adopted and the location of the feed point was varied within the radiating patch to arrive at the point of minimum return loss. This work is also focused on characterization of fabricated antenna in view of parameters like VSWR, Antenna efficiency, Axial ratio, Gain and radiation pattern.
Similar to Techniques for Improving Element Bandwidth (20)
Study On The Improvement Of Bandwidth Of A Rectangular Microstrip Patch Antenna
Study On The Improvement Of Bandwidth Of A Rectangular Microstrip Patch Antenna
Study On The Improvement Of Bandwidth Of A Rectangular Microstrip Patch Antenna
Study On The Improvement Of Bandwidth Of A Rectangular Microstrip Patch Antenna
Enhancement Of Bandwidth and Gain Of Microstrip Patch Antenna
Enhancement Of Bandwidth and Gain Of Microstrip Patch Antenna
Comparative analyses of enhancing bandwidth of micro strip patch antennas a s...
Comparative analyses of enhancing bandwidth of micro strip patch antennas a s...
Inverted Diamond-shaped Notched Substrate and Patch for High-frequency Interf...
Inverted Diamond-shaped Notched Substrate and Patch for High-frequency Interf...
PureWave White Paper : Multiple Antenna Processing For WiMAX
PureWave White Paper : Multiple Antenna Processing For WiMAX
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
DESIGN AND DEVELOPMENT OF MICROSTRIP PATCH ANTENNA
Techniques for Improving Element Bandwidth
- 1. Techniques for Improving Element Bandwidth Name :Ashish S. Patil Roll no.:14MV009 ME MICROWAVE
- 2. CONTENT : Overview Impedance matching technique for increasing bandwidth of MA Probe compensation in Thick Microstrip patch Increasing bandwidth of microstrip antenna by Proximity coupling Characteristic of two layer electromagnetically coupled RPA The SSFIP: A global concept for high performance broadband planar antenna
- 3. OVERVIEW Impedance bandwidth Pattern bandwidth Gain bandwidth
- 4. Impedance matching technique for increasing bandwidth of MA Bandwidth increase by increasing substrate thickness Or dielectric constant reduced But this is limited by inductive Impedance This problem overcome by use thick substrate with same type Of additional impedance matching to cancel inductance This paper use Bode Fano criteria to design matching network can Increase impedance bandwidth by 10-12%
- 6. Probe compensation in Thick Microstrip patch Increase the substrate thickness Inductive effect occur in which probe inductance prevent matching of patch impedance to input connector This inductive effect can be overcome by adding series capacitor in probe feed circuit
- 8. Increasing bandwidth of microstrip antenna by Proximity coupling Proximity coupling using small open tuning stub Stub is connected in shunt with feed line Provide broad bandwidth without excess substrate thickness
- 10. Characteristic of two layer electromagnetically coupled RPA Bandwidth extension technique use two or more stagger tuned Resonator Implemented with stacked patches or combination of dissimilar Element filled by air Bandwidth increase from 10 to 20%
- 12. The SSFIP: A global concept for high performance broadband planar antenna SSFIP = Strip-Slot-Foam-Inverted-Patch Slot size used to increase bandwidth Foam antenna substrate was used at x band to achieve excess of bandwidth of 20%