scholarly journals An H-Shaped Microstrip Antenna with Meandered Slot Lines and H-Shaped DGS For Multiband Operation

2019 ◽  
Vol 8 (9S) ◽  
pp. 1091-1097
Keyword(s):  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Return Loss ◽  
Weather Radar ◽  
Planar Structure ◽  
Impedance Bandwidth ◽  
Peak Gain

In this paper, a microstrip antenna is presented. It has an H-shaped patch which uses meandered slots an H-shaped DGS beneath the microstrip line to support multiband operation with enhanced bandwidth. The simulated and measured results are plotted to see the performance of the antenna in terms of S11 parameter. The proposed designed resonates at 3.56, 8.04 and 10.57 GHz with a peak gain of 8.39 dB with considerable impedance bandwidth and return loss values at the desired bands. The radiation pattern plots show the conformability with the application it is designed for. The planar structure with a water-resistant substrate makes it suitable for weather radar and other 5G applications.

scholarly journals A design of lens antenna with high gain

2021 ◽  
Vol 336 ◽  
pp. 01005
Author(s):  
Darong Gao
Keyword(s):  
Wireless Communications ◽  
Microstrip Antenna ◽  
Return Loss ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Lens Antenna ◽  
Communications Systems ◽  
Dielectric Lens ◽  
Wireless Communications Systems ◽  
Peak Gain

In this paper, A lens antenna with high gain is proposed. The antenna is composed of the microstrip antenna and the hemisphere dielectric lens, and the lens is loaded on the top. The polyethylene is used to fabricated the hemisphere dielectric lens. The antenna has dimensions of 47.58 mm × 47.58 mm × 24.79 mm, which is corresponding to the electrical size of 1.586λ0×1.586λ0×0.826λ0, where λ0 is the free-space wavelength at 10GHz. The impedance bandwidth (return loss<-10dB) is 12.7%(9.24 GHz-10.51 GHz), and the peak gain is 9.06 dBi. The hemisphere dielectric lens can improve the gain of the microstrip antenna. The proposed lens antenna is suitable for wireless communications systems.

High gain low profile wideband dual-layered substrate microstrip antenna based on multiple parasitic elements

2017 ◽  
Vol 10 (4) ◽  
pp. 453-459
Author(s):  
Haixiong Li ◽  
Bozhang Lan ◽  
Jun Ding ◽  
Chenjiang Guo
Keyword(s):  
Reflection Coefficient ◽  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Low Profile ◽  
Layered Substrate ◽  
Measured Impedance ◽  
Peak Gain

In this paper, a high gain broadband low profile microstrip antenna with the dual-layered substrate and four parasitic metal elements is presented. The proposed microstrip antenna is mainly composed of four parts: four circular parasitic metal patches with dual arced breaches, a rectangular metal patch sandwiched between substrates, a square ground plane, and two-square substrates. The circular parasitic elements are the main radiation structure and determine the characteristics of the proposed antenna are closely related to the parasitic elements. The proposed antenna has been fabricated for experimental measurement. The reflection coefficient, radiation pattern, radiation efficiency, and gain have been studied in detail. The simulated and measured impedance bandwidth is 27.0% (3.30–4.33 GHz), the maximum realized peak gain reaches up to 6.52 dBi at the frequency of 3.65 GHz. The radiation pattern has a single peak which is perpendicular to the surface of the substrate. The proposed antenna is suitable to be applied in the 5G mobile or WiMAX wireless communication. Dual antenna with a pair of parasitic elements has been investigated numerically to explain the principle of the proposed antenna.

Dual-Notched Monopole Antenna Using DGS for WLAN and Wi-MAX Applications

2019 ◽  
Vol 28 (11) ◽  
pp. 1950189
Author(s):  
Arnab De ◽  
Bappadittya Roy ◽  
Anup Kumar Bhattacharjee
Keyword(s):  
Microstrip Line ◽  
Return Loss ◽  
Ground Plane ◽  
Monopole Antenna ◽  
Impedance Bandwidth ◽  
Frequency Range ◽  
Fractional Bandwidth ◽  
Notch Band ◽  
Feeding Technique ◽  
Peak Gain

In this paper, a wideband printed polygon-shaped monopole antenna has been designed using microstrip line feeding technique which provides dual-notch band characteristics (2.98–3.19[Formula: see text]GHz) and (3.62–5.00[Formula: see text]GHz) by the use of slots geometry in both the patch and the ground plane. The results of the antenna have been compared both with and without slots in both planes. The initial antenna without DGS and slots in the patch was made to work in the frequency range from 2.56–5.98[Formula: see text]GHz having impedance bandwidth of about 80.09%. The proposed antenna can be made usable for multi-band applications such as WLAN (2.4/3.2/5.2/5.8[Formula: see text]GHz) and Wi-MAX (3.5 and 5.5[Formula: see text]GHz) applications providing fractional bandwidth (FBW) of 85.36% (2.33–5.80[Formula: see text]GHz) and maximum peak gain of 5.65[Formula: see text]dBi at 3.50[Formula: see text]GHz. The value of return loss obtained is about 53.36[Formula: see text]dB at 2.56[Formula: see text]GHz. Prototype of the final antenna is fabricated and the results are verified with the simulated ones.

scholarly journals Circle Microstrip Antenna Simulation for Frequency 3.5 GHz

2021 ◽  
Vol 1 (1) ◽  
pp. 1-4
Author(s):  
Wildan Wildan ◽  
Dwi Astuti Cahyasiwi ◽  
Syah Alam ◽  
Mohd Azman Zakariya ◽  
Harry Ramza
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Return Loss ◽  
Tangent Loss ◽  
Substrate Thickness ◽  
Total Radiation ◽  
Circular Patch Antenna ◽  
Working Frequency

This research proposed microstrip circular patch antenna simulation at a working frequency 3500 MHz. The antenna has been designed using a Duroid RT5880 substrate with dielectric constant (εr) = 2.2, substrate thickness (h) = 1.575 mm, and tangent loss = 0.0009 with microstrip line feeding. The simulation result, return loss value obtained -26.385, VSWR value 1.09, gain value 7.64 dBi, total radiation efficiency value -0.6489 dB, and bandwidth value 72 MHz (3468.8 MHz – 3541.9 MHz).

Optimum Patch Dimension Ratio of T-Shaped Microstrip Antenna

2013 ◽  
Vol 684 ◽  
pp. 303-306
Author(s):  
Eugene Rhee ◽  
Ji Hoon Lee
Keyword(s):  
High Frequency ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Return Loss ◽  
Impedance Matching ◽  
Feeding Method ◽  
High Frequency Structure Simulator ◽  
Feeding Methods ◽  
Coaxial Probe ◽  
Dimension Ratio

There are various feeding methods of antenna like as coaxial probe, coupling, parasitic elements, and impedance matching. This paper adopted the microstrip line method as the feeding method of the antenna. The high frequency structure simulator is used to analyze the characteristics of the T-shaped microstrip antenna with various patch dimensions. In comparison with the basic microstrip antenna, this proposed T-shaped microstrip antenna with 40.38 % of patch dimensions has the optimum characteristics of resonant frequency, return loss, and radiation pattern at 2.0 GHz band.

Circularly Polarized Microstrip Antenna Using SLPD Electromagnetic Band Gap Structure

Frequenz ◽  
2020 ◽  
Vol 74 (1-2) ◽  
pp. 41-51
Author(s):  
Alka Verma ◽  
Anil Kumar Singh ◽  
Neelam Srivastava ◽  
Binod Kumar Kanaujia
Keyword(s):  
Band Gap ◽  
Microstrip Antenna ◽  
Impedance Bandwidth ◽  
Electromagnetic Band Gap ◽  
Circularly Polarized ◽  
Unit Cells ◽  
Measured Impedance ◽  
Band Gap Structure ◽  
Peak Gain ◽  
Gap Structure

AbstractIn this article, a new structure comprising of a novel compact slot loaded polarization dependent Electromagnetic Band Gap structure (SLPDEBG), which enhances the performance of circularly polarized rotated square patch antenna by placing SLPDEBG unit cells around it, has been designed. The proposed antenna, having dimensions 0.640 λo x 0.640 λ x 0.0128 λo (λo stands for the free space wavelength at 2.39 GHz), shows that the measured impedance bandwidth and AR bandwidth is 120 MHz and 50 MHz, respectively, with a peak gain of 3.52 dB. Some prominent features of the proposed structure are: front to back ratio of 64, 3 db, beamwidth of 92° at xz-plane and 74° at yz-plane. This prototype antenna finds its application in wireless communication of ISM band. Good performance of the proposed antenna is verified by the close agreement between the simulated and measured results.

Enhancement of the gain and bandwidth of the microstrip patch antenna with modified ground plane

2016 ◽  
Vol 9 (5) ◽  
pp. 1179-1184 ◽  
Author(s):  
Kalyan Mondal ◽  
Partha Pratim Sarkar
Keyword(s):  
Microstrip Antenna ◽  
Ground Plane ◽  
High Gain ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Network Analyzer ◽  
Microstrip Patch ◽  
Optimum Selection ◽  
Peak Gain ◽  
Selection Of

In this work, microstrip antenna with W- and V-shaped radiating patches have been proposed. Here square- and circular-shaped modified ground planes have been designed by poly tetra fluoro ethylene (PTFE) substrate with dielectric constant 2.4. Broadband with high gain is obtained by optimum selection of radiating patch with modified ground plane. The ground planes are modified by loading a U-shaped slot. The simulated and measured results are compared. Considering −10 dB impedance bandwidth maximum frequency band of 6.97 GHz (3.04–10.01 GHz) with percentage bandwidth of 106.8% is achieved. The proposed antenna exhibits maximum peak gain of 5.1 dBi. The simulation and measurement have been done by Ansoft designer software and vector network analyzer.

A Broad Band and Wide Beam Microstrip Antenna Array

2013 ◽  
Vol 427-429 ◽  
pp. 648-651
Author(s):  
Xiao Feng Xiong ◽  
Wei Dong Chen
Keyword(s):  
Antenna Array ◽  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Broad Band ◽  
Operating Mode ◽  
Impedance Bandwidth ◽  
Axial Mode ◽  
Wide Beam ◽  
Microstrip Antenna Array ◽  
Helical Antennas

A novel broad band and wide beam microstrip helical antenna is proposed based on the modification of traditional helical antennas. Through selecting the appropriate operating mode between the axial mode and the normal mode, this new antenna can broad both the beamwidth and the bandwidth. To improve the gain of the antenna, An antenna array with 1*16 elements is designed and fabricated. Meanwhile, cavity-loaded feeding network is utilized for probe station measurement. The simulated impedance and radiation pattern are studied. The proposed antenna shows a wide impedance bandwidth from 7.6GHz to 9.6GHz for |S11|<-10dB, with wide 3dB beamwidth of E-plane about 1200, respectively.

scholarly journals BROADBAND MICROSTRIP ANTENNA FOR 2G/3G/4G MOBILE BASE STATION APPLICATIONS

2019 ◽  
Vol 11 (2) ◽  
pp. 165-175 ◽  
Author(s):  
Wafaa Mohammed Hashim ◽  
Asst. prof. Dr. Adheed Hasan Sallomi
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Impedance Matching ◽  
Base Station ◽  
Impedance Bandwidth ◽  
Large Bandwidth ◽  
Mobile Base Station ◽  
Cellular Mobile ◽  
Mobile Base

a staircase patch microstrip antenna with slots is proposed to cover the 2G/3G/4G cellular mobile base station bands, when the antenna is excited with a transmission line, creates several modes these modes are composite to obtain a large bandwidth. The proposed antenna operates in the band from 0.86 GHz to 4.78 GHz with an impedance bandwidth of 138%. The use of staircase patch antenna is to achieve more attractive performance such as wider bandwidth, better impedance matching and better radiation. Inserting different slots to the patch of the antenna to enhance the gain and return loss. The gain is obtained ranging from 2.18 dBi to 5.3 dBi. Good radiation efficiencies ranging from 70% to 97% is achieved.

scholarly journals Rancang Bangun Antena Mikrostrip Bowtie Pada Frekuensi 5,2 Ghz

2018 ◽  
Vol 10 (2) ◽  
pp. 15-21
Author(s):  
Aprinal Adila Asril ◽  
Lifwarda Lifwarda ◽  
Yul Antonisfia
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Resonance Frequency ◽  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Microstrip Antennas ◽  
Antenna Design ◽  
Narrow Bandwidth ◽  
Simple Materials

Microstrip antennas are very concerned shapes and sizes. Can be viewed in terms of simple materials, shapes, sizes and dimensions smaller antennae, the price of production is cheaper and able to provide a reasonably good performance, in addition to having many advantages, the microstrip antenna also has its drawbacks one of which is a narrow bandwidth. In this research will be designed a microstrip antenna bowtie which works at a frequency of 5.2 GHz which has a size of 68mm x 33mm groundplane. For the length and width of 33mm x 13mm patch. This antenna is designed on a printed cicuit board (PCB) FR4 epoxy with a dielectric constant of 4.7 and has a thickness of 1,6mm. This bowtie microstrip antenna design using IE3D software. This antenna has been simulated using IE3D software showed its resonance frequency is 5.270 GHz with a return loss -23 595 dB bandwidth of 230 MHz, VSWR 1,142, unidirectional radiation pattern and impedance 43,919Ω. The results of which have been successfully fabricated antenna with a resonant frequency of 5.21 GHz with a return loss -16.813 dB bandwidth of 79 MHz, VSWR 1.368, unidirectional radiation pattern, impedance 43,546Ω and HPBW 105 °.

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