scholarly journals Microstrip array antenna with inset-fed for WLAN application

2020 ◽  
Vol 17 (1) ◽  
pp. 340
Author(s):  
Norfishah Ab Wahab ◽  
W. Nor Syafizan W. Muhamad ◽  
Zuhani Ismail Khan ◽  
Suzi Seroja Sarnin
Keyword(s):  
Wireless Communication ◽  
Return Loss ◽  
Array Antenna ◽  
Patch Antennas ◽  
Array Antennas ◽  
Compact Size ◽  
Corporate Network ◽  
Microstrip Array ◽  
Good Agreement ◽  
Microstrip Array Antenna

<p>This paper proposed three designs of microstrip array patch antennas, to resonate at 2.4 GHz. The purpose of the study is to achieve size reduction with acceptable performance for wireless communication system applications. Based on the array concept, the array antennas are arranged using corporate network technique. It is found that the simulated 4x3 patch array antenna achieved the compact size with dimension reduced up to 26% compared to 4x1 and 4x2 array patch antennas. In terms of return loss, the antenna attenuated more than 19 dB. The 4x3 patch array antenna is fabricated and measured using RO4350 microstrip substrate to validate the concept. The responses are found in good agreement between simulation and measurement.</p>

scholarly journals Reduction of Mutual Coupling and Return Loss in Microstrip Array Antennas Using Concave Rectangular Patches

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Shahram Mohanna ◽  
Ali Farahbakhsh ◽  
Saeed Tavakoli ◽  
Nasser Ghassemi
Keyword(s):  
Mutual Coupling ◽  
Return Loss ◽  
Array Antenna ◽  
Effective Solution ◽  
Rectangular Array ◽  
Rectangular Patch ◽  
Array Antennas ◽  
Microstrip Array ◽  
Patch Length ◽  
Microstrip Array Antenna

An effective solution to reduce both the mutual coupling and return loss of a microstrip array antenna consisting of rectangular patches is proposed. The patch is made concave in both horizontal and vertical sides. Applying the proposed structure to a microstrip array antenna having two elements, the effects of patch concavity on the mutual coupling and return loss are simulated and studied. To obtain a concave rectangular patch array antenna having low amounts of mutual coupling and return loss, the patch length and width as well as the amounts of concavities are optimized using an enhanced genetic algorithm. To verify the simulation results, then, the optimal array antenna is fabricated. The simulation and experimental results confirm that the optimal concave rectangular array antenna has low amounts of mutual coupling and return loss.

Design and Analysis of a RFID Reader Microstrip Array antenna for IoT Applications in Smart Cities

2022 ◽  
Vol 17 (5) ◽  
pp. 0-0
Keyword(s):  
Smart Cities ◽  
Array Antenna ◽  
The Internet ◽  
Substrate Thickness ◽  
Iot Applications ◽  
Rfid Reader ◽  
Array Antennas ◽  
Microstrip Array ◽  
The Internet Of Things ◽  
Microstrip Array Antenna

This paper presents the design of 2*1 and 4*1 RFID reader microstrip array antenna at 2.4GHz for the Internet of things (IoT) networks which are Zigbee, Bluetooth and WIFI. The proposed antenna is composed of identical circular shapes radiating patches printed in FR4 substrate. The dielectric constant εr and substrate thickness h are 4.4 and 1.6mm, respectively. The 2*1 and 4*1 array antennas present a gain improvement of 27.3% and 61.9%, respectively. The single,2*1 and 4*1 array antennas were performed with CADFEKO.

Reconfigurable antennas with frequency, polarization, and pattern diversities for multi-radio wireless applications

2015 ◽  
Vol 9 (1) ◽  
pp. 121-132 ◽  
Author(s):  
Chilukuri Sulakshana ◽  
Lokam Anjaneyulu
Keyword(s):  
Wireless Communication ◽  
Radiation Pattern ◽  
Standing Wave ◽  
Return Loss ◽  
Reconfigurable Antennas ◽  
Reconfigurable Antenna ◽  
Patch Antennas ◽  
Band Frequency ◽  
Wireless Applications ◽  
Good Agreement

This paper presents different reconfigurable antennas with frequency, polarization, and pattern diversities. All the antennas have a very simple, novel, and compact structures, which are used for different wireless communication applications. These antennas employ switching for obtaining different reconfigurations. At first, an E-shaped antenna is designed for multi-band frequency reconfigurability. Second, circular and rectangular-shaped patch antennas are designed for achieving diversity in polarization. At last, a pattern reconfigurable antenna is designed with multiport excitation. These antenna performances are analyzed using various parameters such as return loss, radiation pattern, voltage standing wave ratio (VSWR), and gain. The prototypes of the antennas are fabricated and measured results along with simulated ones are presented. Both the results are in good agreement.

scholarly journals Design and Analysis of a RFID Reader Microstrip Array Antenna for IoT Applications in Smart Cities

2022 ◽  
Vol 17 (5) ◽  
pp. 1-11
Author(s):  
Omaima Benkhadda ◽  
Mohamed Saih ◽  
kebir Chaji ◽  
Abdelati Reha
Keyword(s):  
Smart Cities ◽  
Array Antenna ◽  
The Internet ◽  
Substrate Thickness ◽  
Iot Applications ◽  
Rfid Reader ◽  
Array Antennas ◽  
Microstrip Array ◽  
The Internet Of Things ◽  
Microstrip Array Antenna

This paper presents the design of 2*1 and 4*1 RFID reader microstrip array antenna at 2.4GHz for the Internet of things (IoT) networks which are Zigbee, Bluetooth and WIFI. The proposed antenna is composed of identical circular shapes radiating patches printed in FR4 substrate. The dielectric constant εr and substrate thickness h are 4.4 and 1.6mm, respectively. The 2*1 and 4*1 array antennas present a gain improvement of 27.3% and 61.9%, respectively. The single,2*1 and 4*1 array antennas were performed with CADFEKO.

scholarly journals Theory, Design, and Implementation of a New Family of Ultra-Wideband Metamaterial Microstrip Array Antennas Based on Fractal and Fibonacci Geometric Patterns

2020 ◽  
Vol 20 (1) ◽  
pp. 53-63
Author(s):  
Besharat Rezaei Shookooh ◽  
Alireza Monajati ◽  
Hamid Khodabakhshi
Keyword(s):  
Array Antenna ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Geometric Patterns ◽  
The Third ◽  
New Family ◽  
Area Reduction ◽  
Array Antennas ◽  
Microstrip Array ◽  
Microstrip Array Antenna

The theory and design of a new family of ultra-wideband (UWB) metamaterial (MTM) microstrip array antennas based on fractal and Fibonacci geometric patterns are investigated. First, the UWB microstrip array antenna is presented with two radiating MTM elements. Then, using fractal and Fibonacci geometric patterns, the array antenna is expanded. Improvements in the antenna parameters is achieved by repeating the second and third iterations of the fractal and Fibonacci patterns. As the order of iteration of the fractal and Fibonacci geometric patterns increases, the impedance bandwidth of the MTM microstrip array antenna increases, and its radar cross-section (RCS) decreases. The impedance bandwidth of the array antenna with two MTM elements is 3.37–9.2 GHz, while the bandwidth of the third-iteration Fibonacci and fractal MTM array antennas are 3.5–10.1 GHz and 3.55–10.34 GHz, respectively. Furthermore, the proposed array antennas exhibit lower RCS due to metal area reduction, with respect to the array antenna with two MTM elements.

scholarly journals The the design of the microstrip array antenna with the rosette patch for WLAN 2.4 GHz and 5.2 GHz frequencies

2020 ◽  
Vol 30 (2) ◽  
Author(s):  
Mohammad Hamdani
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Single Layer ◽  
Array Antenna ◽  
Wifi Networks ◽  
Directional Radiation ◽  
Ansoft Hfss ◽  
Measurement Results ◽  
Microstrip Array ◽  
Microstrip Array Antenna

This research discusses the design of the microstrip array antenna with the rosette patch model that works on WLAN 2.4 GHz and 5.2 GHz frequencies which are used for WIFI networks. This microstrip antenna is made using a feedline feed or direct feed with a directional radiation pattern. The initial design used Ansoft HFSS v.13. Software, then fabricated the Microstrip Antenna using a PCB with a single layer FR4 type, and consisted of a patch, substrate, and groundplane. This antenna has dimensions of 94 mm in length and 63.3 mm in width. The measurement results in Laboratorium obtained VSWR 1.6, return loss -12.817, and 31.357 impedance, at a frequency of 2.4 GHz. While at a frequency of 5.2 GHz the VSWR value is 1.292, return loss is -18,210, and impedance is 46.417.  

scholarly journals Ultra-Wideband Metamaterial-Loaded Microstrip Array Antennas using Fibonacci & Fractal Geometric Patterns, Design and Modelling

2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Besharat Rezaei Shookooh ◽  
Alireza Monajati ◽  
Hamid Khodabakhshi
Keyword(s):  
Equivalent Circuit Model ◽  
Array Antenna ◽  
Ultra Wideband ◽  
Equivalent Model ◽  
Impedance Bandwidth ◽  
Coupling Mechanism ◽  
Geometric Patterns ◽  
Array Antennas ◽  
Microstrip Array ◽  
Microstrip Array Antenna

In this study; theory, design and modeling of a new topology of ultra-wideband (UWB) metamaterial (MTM) loaded microstrip array antenna using Fibonacci & fractal geometric patterns are analyzed. This antenna is made basically from many monopole elements which are loaded by complementary metamaterial transmission line (CMTL) unit cells. The distributed CMTL element, contains a Koch-shaped expanded complementary single split ring resonator (CSRR) pair. At first step, the UWB microstrip array antenna designed with two CMTL-loaded monopole element. So, using an iterative method based on the Fibonacci and fractal geometry patterns, the array antenna is expanded. As the order of iteration increases, the impedance bandwidth of the proposed array antennas improve more, and the radar cross section (RCS) decreases. the impedance bandwidth of the proposed third-order Fibonacci and fractal CMTL-loaded array antennas are 250 MHz and 539 MHz more than the two-element CMTL-loaded array antenna, respectively. Finally, this paper presents an improved method to extract the parameters of an equivalent circuit model of the proposed MTM-loaded array antenna. Verification of the equivalent model have been validated utilizing ADS software. The obtained model, in addition to numerically efficient in comparison with the full wave analysis utilizing the moment method, gives a good physical insight to the mutual coupling mechanism of the array antenna.

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