2 GHz RF Patch Antenna/Array Design
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Designed an RF patch antenna and patch array system at an operating frequency of 2GHz with minimal return loss S11 < -20dB within ANSYS HFSS.
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![ELEC 4503 - RF LINES & ANTENNAS - FALL 2018 1
RF Patch Antenna/Array Design
Rashad Alsaffar (101006781)
Abstract—The dimensions of a patch antenna are directly
affiliated with its performance. Operating frequency was assigned
individually to students to aim for minimum S11 return loss (¡
−20dB) for each patch antenna. A feed line supplied a 50Ω
impedance, ensuring maximum power transfer throughout the
device. The design would become amplified with the addition of
two antenna patches to develop an antenna array, increasing
overall gain and performance as opposed to a single patch
antenna. Dimensions of the array were tuned to match the
specifications of the individual patch antenna.
I. OBJECTIVE
The objective of this lab was to learn and understand the
design of a patch antenna within HFSS. An operating
frequency of 2GHz was assigned; the patch antenna must
try to simulate minimum return loss (S11 < −20dB) at the
mentioned operating frequency. To insure this, an online
calculator [1] was used to determine the dimensions of
the patch antenna. Dimensions were tweaked to meet the
specifications of the device. The feed line dimensions was
altered as well, to ensure a 50Ω impedance into the patch
antenna.
The design would be copied and pasted twice within
the patch array schematic; simulations would be ran to test
the performance of the patch array, where it would try to
meet the specifications for the individual patch antenna, i.e.
minimum return loss at operating frequency.
II. PATCH ANTENNA
The patch antenna model was made through HFSS. Its di-
mensions were tweaked to allow for an operating frequency
of 2GHz and minimum S11 return loss.
Fig. 1. Patch Antenna Model w/ Dimensions
The S11 response was derived through HFSS simulations. The
plot below details the recorded S11 response from the patch
antenna simulation:
Fig. 2. Patch Antenna S11 Response (dB)
The co-polarized and cross-polarized gains (dB) were plotted
within each principal cut within the plots below:
Fig. 3. Patch Antenna Co/Cross-Polarized Gain (dB) @ 2GHz in
E-Plane](https://image.slidesharecdn.com/2ghzrfpatchantenna-arraydesignreport-181227063904/85/2-GHz-RF-Patch-Antenna-Array-Design-1-320.jpg)
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The document discusses and compares the performance of various antenna designs through return loss/VSWR plots and radiation patterns sourced from several research papers. Key findings include that bicone and monocone antennas have bandwidths over 7 GHz but are difficult to fabricate. A helix antenna with a capacitive coupling has the best performance of the helix designs with a bandwidth of around 4 GHz. Square planar monopole antennas with trident or double feeding strips have bandwidths of around 10 GHz. Vivaldi antennas and circular/elliptical dipole antennas also achieve bandwidths greater than 9 GHz. LPDA and monopole antennas have more varied performance depending on specific dimensions.
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U-slot Circular Patch Antenna for WLAN Application
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Design of rectangular patch antenna array using advanced design methodology
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Iisrt 3-design of rectangular patch antenna array using advanced design metho...
This document describes the design of rectangular patch antenna arrays. It discusses designing a single patch element and determining its physical parameters. It then covers designing 1x2 and 2x2 array configurations using rectangular patches. The feed networks are designed using quarter-wave transformers to match impedances. Simulation results show the return loss and Smith charts with deep S11 values at the operating frequency of 2.4GHz, indicating good impedance matching.
DUAL BAND F-ANTENNA FOR EUROPE AND NORTH AMERICA
A single antenna for multiple bands are always beneficial from the design point of view. Here a single antenna which is fundamentally inverted F antenna is used, the uniqueness of the design is that , it uses trap technique to produce dual resonance from a single inverted F antenna . The trap used to block the current due to some frequencies and passes the current contributed by other frequencies. So in short , this trap is like a RF filter which has some passband as well as stop band. This trap approach uses a LC network to achieve this design goal .The two bands of interest are 865-870 MHz and 902-928 MHz .. The challenge of this design is that the frequency separation of the two bands is very small. In this case, and also the extra section for low frequency band is too small. Then, the influence of trap LC component variation due to tolerance to the two resonant frequencies is big, and so it is difficult to achieve good in band return loss within the LC tolerance. This is the main difficulty of this design. This issue is resolved by placing the low band section away from the end of the antenna. The antenna is designed on FR4 substrate material having thickness of 1.6 mm and hence it is a low cost solution which could use in various commercial applications which follows these bands.
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S11 parameter results comparison in reconfigurable antennas under simulation...
S11 parameter results comparison in reconfigurable antennas under simulation...International Journal of Reconfigurable and Embedded Systems
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Applicable 5 G technology
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This document summarizes research on a miniaturized 878 MHz slotted meander line monopole antenna. The antenna was designed using slots and a meander line to reduce the size by 70% compared to a conventional antenna. The proposed antenna has a simple structure, small size of 46.8 x 74 mm, and operates at the desired frequency of 878 MHz. Simulation and measurement results showed the antenna produces an omnidirectional radiation pattern with an impedance bandwidth of 48.83 MHz and maximum gain of -1.18 dBi, validating the simulated performance. The antenna's miniaturization approach using slots and a meander line increases the effective electrical length to reduce the operating frequency.
Design of Reconfigurable Microstrip Patch Antenna for WLAN Application
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This paper presents the Microstrip patch antenna for WLAN applications with planar geometry and it consists of a defected ground (DGS), a feed, a substrate, and a patch. The design with DGS has been analyzed taking different dimensions of H Slot and achieve optimized dimensions with the help of CST, Microwave Studio commercial software for WLAN band at 5.20 GHz frequency with corresponding bandwidth of 310 MHz to optimize antenna’s properties. Results show that the final designed antenna has favorable characteristics at this frequency.
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The document describes a novel electrically small planar dipole antenna operating at 2.45 GHz. The antenna has extremely small dimensions of 11.2x5.1x1.575 mm, making it one of the smallest reported footprints at this frequency. Three matching approaches are studied to match the antenna's impedance to 50 ohms. Matching approach 1 has the highest efficiency of 87.4% and realized gain of 1.17 dBi. Approaches 2 and 3 have lower efficiencies around 40% due to increased surface currents from end-loading the dipole. The antenna is also modeled using an infinitesimal dipole model, which shows good agreement with simulations. Fabricated prototypes are presented for the three approaches
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The document discusses various types of small antennas that can be used for EnOcean-based products, including quarter-wave monopole antennas, helical antennas, chip antennas, and PCB antennas. It emphasizes that the antenna design is critical for radio performance and range. The antenna and a sufficiently sized ground plane form a resonant circuit. Common pitfalls in antenna design are an undersized ground plane or traces and components placed too close to the antenna.
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Abstract Due to development in wireless devices, it poses a new challenge for the design of an antenna in wireless communication. Patch antennas are well suited for various wireless application systems due to their low weight, low profile, versatility, conformability, low cost and low sensitivity to manufacturing tolerances. This paper present design, simulation of a rectangular micro strip antenna for WLAN and PCS. The aim of the work is to design reliable broadband, compact patch antenna for wireless devices. Antenna is proposed which is providing circular polarization, dual band, resonant frequencies at 1.9 GHz, 2.4 GHz. Key Words: Patch antenna, co-axial feeding, polarization, dual band, HFSS …
Multiband Circular Microstrip Patch Antenna for WLAN Application
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
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2 GHz RF Patch Antenna/Array Design
- 1. ELEC 4503 - RF LINES & ANTENNAS - FALL 2018 1 RF Patch Antenna/Array Design Rashad Alsaffar (101006781) Abstract—The dimensions of a patch antenna are directly affiliated with its performance. Operating frequency was assigned individually to students to aim for minimum S11 return loss (¡ −20dB) for each patch antenna. A feed line supplied a 50Ω impedance, ensuring maximum power transfer throughout the device. The design would become amplified with the addition of two antenna patches to develop an antenna array, increasing overall gain and performance as opposed to a single patch antenna. Dimensions of the array were tuned to match the specifications of the individual patch antenna. I. OBJECTIVE The objective of this lab was to learn and understand the design of a patch antenna within HFSS. An operating frequency of 2GHz was assigned; the patch antenna must try to simulate minimum return loss (S11 < −20dB) at the mentioned operating frequency. To insure this, an online calculator [1] was used to determine the dimensions of the patch antenna. Dimensions were tweaked to meet the specifications of the device. The feed line dimensions was altered as well, to ensure a 50Ω impedance into the patch antenna. The design would be copied and pasted twice within the patch array schematic; simulations would be ran to test the performance of the patch array, where it would try to meet the specifications for the individual patch antenna, i.e. minimum return loss at operating frequency. II. PATCH ANTENNA The patch antenna model was made through HFSS. Its di- mensions were tweaked to allow for an operating frequency of 2GHz and minimum S11 return loss. Fig. 1. Patch Antenna Model w/ Dimensions The S11 response was derived through HFSS simulations. The plot below details the recorded S11 response from the patch antenna simulation: Fig. 2. Patch Antenna S11 Response (dB) The co-polarized and cross-polarized gains (dB) were plotted within each principal cut within the plots below: Fig. 3. Patch Antenna Co/Cross-Polarized Gain (dB) @ 2GHz in E-Plane
- 2. ELEC 4503 - RF LINES & ANTENNAS - FALL 2018 2 Fig. 4. Patch Antenna Co/Cross-Polarized Gain (dB) @ 2GHz in H-Plane III. PATCH ARRAY The patch antenna model was copied within the established patch array model within HFSS. The design was once again configured for resonance at 2GHz experiencing a minimum S11 return loss. Fig. 5. Patch Array Model The figure below displays the modified dimensions made to the power divider attachment for the overall patch array: Fig. 6. Patch Array Model Dimensions The S11 response for the patch array is described in the plot below. A minimal return loss of ≈ −16.5dB was achieved at resonance frequency of 2.01GHz. The results are compared to given device parameters across multiple frequencies: Fig. 7. Patch Array S11 Response (dB) w/ Received S11 Data The co-polarized and cross-polarized gains (dB) were plotted within each principal cut within the plots below: Fig. 8. Patch Array Co/Cross-Polarized Gain (dB) @ 2GHz in E- Plane
- 3. ELEC 4503 - RF LINES & ANTENNAS - FALL 2018 3 Fig. 9. Patch Array Co/Cross-Polarized Gain (dB) @ 2GHz in H- Plane REFERENCES [1] S. Gupta, ”Patch Antenna”, Lab 5, 2018