scholarly journals Enhancing the resonance characteristics of circular patch antenna for SHF applications

2021 ◽  
Author(s):  
Mousaab M. Nahas ◽  
Keyword(s):  
Patch Antenna ◽  
High Frequency ◽  
Microstrip Antenna ◽  
Low Cost ◽  
Ground Plane ◽  
Dielectric Substrate ◽  
Ultra Wideband ◽  
Uwb Antenna ◽  
High Frequency Structure Simulator ◽  
Circular Patch Antenna

Microstrip patch antenna is attractive for various applications due to its easy fabrication, low cost and small size. It simply comprises of a radiating patch and ground plane that are separated by a dielectric substrate. However, the resonance bandwidth of the microstrip antenna is still an issue that needs to be considered in research. This paper aims to enhance the bandwidth of a microstrip antenna or introduce more resonant frequencies within the Super High Frequency (SHF) band. The paper demonstrates empirical results for circular-shaped patch antenna using the High Frequency Structure Simulator (HFSS). It begins by investigating different patch sizes and substrate materials, so that an optimal preliminary design is introduced. Then, different slot shapes are inserted into the patch for significant enhancement of the resonance characteristics. As a result, new ultra-wideband (UWB) antenna designs are presented with bandwidth results reaching 15.5 GHz within the C, X, Ku and K bands. Also, new multiband antenna designs are presented with improved reflection valleys in the Ku, K and Ka bands.

scholarly journals Bandwidth and Efficiency Enhancement of Rectangular Patch Antenna for SHF Applications

2019 ◽  
Vol 9 (6) ◽  
pp. 4962-4967
Author(s):  
M. M. Nahas ◽  
M. Nahas
Keyword(s):  
Patch Antenna ◽  
High Frequency ◽  
Low Cost ◽  
Ground Plane ◽  
Cost Effective ◽  
Dielectric Substrate ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Antenna Performance

The microstrip patch antenna is used in various communication applications including cellular phones, satellites, missiles, and radars, due to its several attractive features such as small size and weight, low cost, and easy fabrication. The microstrip patch antenna consists of a top radiating patch, a bottom ground plane, and a dielectric substrate in between. The patch can have different shapes, the rectangular patch being the most commonly used. In practice, the microstrip antenna suffers from narrow bandwidth and low gain efficiency. This paper aims to enhance the bandwidth and efficiency of a rectangular-patch antenna using the High-Frequency Structure Simulator (HFSS). Initially different patch sizes and substrate materials are investigated and optimal antenna parameters are achieved. Then, the antenna performance is further enhanced by inserting single and double slot designs into the patch. Two cost-effective feeding methods are involved in the investigation. The antenna is designed to operate in the Super High Frequency (SHF) band.

scholarly journals A New Compact Small Circular Patch Antenna for UWB Communication

2015 ◽  
Vol 11 (4) ◽  
pp. 210 ◽  
Author(s):  
Soufian Lakrit ◽  
Hassan Ammor
Keyword(s):  
Patch Antenna ◽  
Characteristic Impedance ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Circular Patch ◽  
High Frequency Structure Simulator ◽  
Large Bandwidth ◽  
Circular Patch Antenna ◽  
Uwb Applications ◽  
Good Agreement

A new small circular patch antenna for ultra-wideband (UWB) applications is presented. By studying this structure, it is shown that the insertion of a slot with the desired length and width in the ground plane, can lead to a large bandwidth. Our antenna, whose dimensions are 18×12×1.58 mm3, was fed by an SMA female connector with characteristic impedance of 50Ω in order to measure the return loss and VSWR and to compare them with the simulation results. The bandwidth obtained from measurements ranges from 3.52 to 13.67 GHz for VSWR < 2 and from 3.26 GHzto14.23GHz for VSWR < 3. The radiation pattern is omnidirectional on most of the operating band. High Frequency Structure Simulator (HFSS) was used for simulation whose results are in good agreement with the measured parameters.

scholarly journals Improving the Performance of a Microstrip Antenna by Adding a Slot into Different Patch Designs

2021 ◽  
Vol 11 (4) ◽  
pp. 7469-7476
Author(s):  
M. J. Hakeem ◽  
M. M. Nahas
Keyword(s):  
Microstrip Antenna ◽  
Low Cost ◽  
Ground Plane ◽  
Front Surface ◽  
Dielectric Substrate ◽  
Patch Antennas ◽  
High Frequency Structure Simulator ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
Antenna Performance

Microstrip patch antennas are attractive for communication applications due to their small size, low cost, and easy fabrication. Regardless of the diverse usage of these antennas, their bandwidth and efficiency are still limited and need to be improved. Therefore, this paper aims to enhance the bandwidth and efficiency of a microstrip antenna by inserting a slot into various patch designs. Flame Retardant (FR4) material is used in the dielectric substrate and the antenna is fed by a microstrip line. Virtually, the antenna performance is attempted to be optimized through empirical investigations of feedline lengths, slot sizes and positions, and ground plane dimensions and locations. To achieve the results, the High Frequency Structure Simulator (HFSS) is used, and the paper concludes by showing that the antenna performance is enhanced by the slot, and the return loss is significantly reduced when the ground plane is moved to the front surface of the antenna.

scholarly journals Design of a Compact CPW-Fed Monopole Antenna With Asymmetrical Hexagonal Slot Loaded Ground Structure for C/X/Ku Band Applications

2020 ◽  
Vol 16 (1) ◽  
pp. 15-22
Author(s):  
Ajay Kumar Dwivedi ◽  
Brijesh Mishra ◽  
Vivek Singh ◽  
Pramod Narayan Tripathi ◽  
Ashutosh Kumar Singh
Keyword(s):  
High Frequency ◽  
Ground Plane ◽  
Directional Pattern ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Ground Structure ◽  
High Frequency Structure Simulator ◽  
Performance Matrix ◽  
Novel Design ◽  
Ku Band

AbstractA novel design of ultra-wideband CPW-fed compact monopole patch antenna is presented in the article. The size of the antenna is 22 × 18 × 1.6 mm and it operates well over an ultra-wideband frequency range 4.86–13.66 GHz (simulated) and 4.93–13.54 GHz (measured) covering C, X and partial Ku band applications. The proposed design consists of a defected ground plane and U-shape radiating patch along with two square shape parasitic patches in order to achieve the ultra-wideband (UWB) operations. The performance matrix is validated through measured results that indicate the wide impedance bandwidth (93.2 %) with maximum gain of 4 dBi with nearly 95 % of maximum radiation efficiency; moreover, the 3D gain pattern manifests approximately omni-directional pattern of the proposed design. The prototype has been modelled using HFSS (High Frequency Structure Simulator-18) by ANSYS, fabricated and tested using vector network analyser E5071C.

scholarly journals A Defected Structure Shaped CPW-Fed Wideband Microstrip Antenna for Wireless Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Puneet Khanna ◽  
Amar Sharma ◽  
Kshitij Shinghal ◽  
Arun Kumar
Keyword(s):  
Patch Antenna ◽  
High Frequency ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Coplanar Waveguide ◽  
Network Analyzer ◽  
Large Space ◽  
Wireless Applications ◽  
High Frequency Structure Simulator ◽  
Good Agreement

A coplanar waveguide- (CPW-) fed compact wideband defected structure shaped microstrip antenna is proposed for wireless applications. Defected structure is produced by cutting theUshape antenna in the form of two-sided T shape. The proposed antenna consists of two-sidedTshape strip as compared to usual monopole patch antenna for minimizing the height of the antenna. The large space around the radiator is fully utilized as the ground is on the same plane as of radiator. Microstrip line feed is used to excite the proposed antenna placed on an FR4 substrate (dielectric constantεr=4.4). The antenna is practically fabricated and simulated. Simulated results of the proposed antenna have been obtained by using Ansoft High-Frequency Structure Simulator (HFSS) software. These results are compared with measured results by using network analyzer. Measured result shows good agreement with the simulated results. It is observed that the proposed antenna shows a wideband from 2.96 GHz to 7.95 GHz with three bands atf1=3.23 GHz,f2=4.93 GHz, andf3=7.04 GHz.

scholarly journals Design of Wideband Antenna Array for WiMax Application

2021 ◽  
Vol 9 (8) ◽  
pp. 958-962
Author(s):  
Rakesh N
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
High Frequency ◽  
Return Loss ◽  
Flow Solver ◽  
Wideband Antenna ◽  
Circular Patch ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
Circular Patch Antenna

Abstract: The evolution of wireless communication system has led path for innovative antenna design specifically in wideband antenna for WiMax application. In this paper design and simulation of microstrip wideband circular patch antenna array operating between 2GHz to 4Ghz is presented. The circular patch antenna is designed to operate at 3GHz line feed and the ground is itched to achieve required wideband characteristics. The simulation is carried out in EM Flow solver, High Frequency Structure Simulator software. For a single patch antenna, the return loss, lesser than -10dB throughout the bandwidth. Later an antenna array is operating between 2GHz to 4GHz frequency is designed and simulated. The return loss is lesser than -12dBi throughout the band and a peak gain is 14.7dBi. Keywords: Microstrip Patch Antenna (MPA), High Frequency Structure Simulator (HFSS).

scholarly journals Design of Ultra Wideband Antenna

2020 ◽  
Vol 8 (5) ◽  
pp. 3988-3990
Keyword(s):  
Return Loss ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Ground Plane ◽  
Dielectric Substrate ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Uwb Antenna ◽  
Rectangular Patch ◽  
Microstrip Feed

In this paper, A coplanar waveguide (CPW) ultra-wideband(UWB) antenna is designed, analyzed and simulated by computer simulation technology(CST). The proposed antenna is fabricated on FR-4 dielectric substrate. A microstrip feed line is used to excite the antenna.The ground plane is slotted to improve the impedance bandwidth (BW). Here, a rectangular patch is used as radiator and two corners out of four are truncated to improve impedance matching and UWB characterization.This antenna satisfies UWB characteristics like VSWR<2, Return loss(S11)<-10 dB,Gain<5dB and the antenna is operating within the frequency range of 1.59 to 11.87 GHz range which covers whole ultra wideband i.e. 3.1 to 10.6 GHz range.

scholarly journals Long-Range Displacement Meters Based on Chipped Circular Patch Antenna

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4884
Author(s):  
Songtao Xue ◽  
Kang Jiang ◽  
Shuai Guan ◽  
Liyu Xie ◽  
Guochun Wan ◽  
...  
Keyword(s):  
Long Range ◽  
Patch Antenna ◽  
High Frequency ◽  
Current Flow ◽  
Displacement Sensor ◽  
Circular Patch ◽  
High Frequency Structure Simulator ◽  
Circular Patch Antenna ◽  
Ground Plate ◽  
Stress Damage

This paper presents a passive wireless long-range displacement sensor that is based on the circular patch antenna, and the detecting range of the sensor can be customized. The sensor consists of a chipped circular antenna with two opened rectangular windows, a substrate, and a ground plate with a sloping channel. No bonding between the antenna and the ground plate allows for the chipped antenna to slide along the sloping channel. The channel will drive the current flow on the plate once the chip is activated, increasing the effective electrical length and, consequently, decreasing the resonant frequency of the circular antenna. The sensing mechanism equates the measuring displacement to the relative movement of the antenna with respect to the ground that achieves the measurement of long-range displacement and, thus, the proposed sensor can avoid stress damage to the antenna due to excessive deformation. Three different range sensors were simulated in the the Ansoft high frequency structure simulator (HFSS). The results show that the resonance frequency of the antenna has a linear relationship with the varying chute depth beneath the chip. Three sensors were fabricated, and the experimental results also validated that the sensitivity of the sensor can be adjusted.

scholarly journals Bandwidth Enhancement of UWB Microstrip Antenna with a Modified Ground Plane

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
N. Prombutr ◽  
P. Kirawanich ◽  
P. Akkaraekthalin
Keyword(s):  
Microstrip Antenna ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Ground Plane ◽  
Circuit Board ◽  
Resonant Frequencies ◽  
Bandwidth Enhancement ◽  
Rectangular Slot ◽  
Compact Size ◽  
Circular Patch Antenna

This article presents a bandwidth enhancing technique using a modified ground plane with diagonal edges, rectangular slot, and T-shape cut for the design of compact antennas. The proposed low-cost, compact-size circular patch antenna on 3 cm 5.1 cm printed circuit board (FR-4) is designed and validated through simulations and experiments. Results show that the T-shaped ground plane with the presence of the diagonal cuts at the top corners and the rectangular slots can increase the bandwidth. Return losses of 19 and 26 dB for the first and second resonant frequencies, respectively, can be achieved when the depth of the diagonal cut is 5 mm, the dimension of each rectangular slot is  mm, and the T-shaped size is  mm, providing a 28.67% wider bandwidth than FCC standard.

scholarly journals A new patch antenna for ultra wide band communication applications

2020 ◽  
Vol 18 (2) ◽  
pp. 848
Author(s):  
Anwar Sabah ◽  
Malik Jasim Frhan
Keyword(s):  
Patch Antenna ◽  
Ground Plane ◽  
Wide Band ◽  
Dielectric Substrate ◽  
The Other ◽  
Ultra Wide Band ◽  
Uwb Antenna ◽  
Feed Point ◽  
Printed Monopole ◽  
Good Agreement

<span>A printed monopole patch Ultra Wide Band (UWB) antenna for use in UWB application is proposed in this paper. The proposed antenna consists of a patch with appropriate dimensions on one side of a dielectric substrate, and a partial ground plane on the other side of the substrate. The techniques that used to enhance the bandwidth are the partial ground plane, feed point position and adjusted feed gap. The substrate that is used in the proposed antenna is Fr4 epoxy, the optimum dimensions of the antenna are 40mm×28mm×1.5mm this antenna designed by HFSS program. The band achieved by the proposed antenna is from 3.6GHz to 15GHz. This antenna is fabricated in the ministry of science and technology Baghdad-Iraq and a good agreement between simulation and measured S11 is achieved. </span>

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