BROADBAND CIRCULARLY POLARIZED CPW-FED ASYMMETRICALLY-SHAPED SLOT PATCH ANTENNA FOR X BAND APPLICATIONS

A broadband circularly polarized CPW-fed slot patch antenna is presented in this paper. The proposed geometry consists of two unequal L-shaped arms, feeding asymmetrically-shaped slots at two opposite corners to achieve wider circularly polarized bandwidth in stable radiation, without any external p...

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Published in:Progress in electromagnetics research. Letters 2020-01, Vol.91, p.137-143
Main Authors: Mekimah, Boualem, Djerafi, Tarek, Messai, Abderraouf, Belhedri, Abdelkrim
Format: Article
Language:English
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Antennas (Electronics)
Broadband transmission
Design and construction
Equipment and supplies
Waveguides
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Djerafi, Tarek
Messai, Abderraouf
Belhedri, Abdelkrim
description A broadband circularly polarized CPW-fed slot patch antenna is presented in this paper. The proposed geometry consists of two unequal L-shaped arms, feeding asymmetrically-shaped slots at two opposite corners to achieve wider circularly polarized bandwidth in stable radiation, without any external polariser. The antenna performance exhibits a wide 3-dB axial ratio bandwidth (3-dB ARBW) of 2.8 GHz, starting from 7.4 GHz until 10.2 GHz, within the 10-dB impedance bandwidth (10-dB IBW) of 3.2 GHz (7-10.2 GHz). Results show a stable radiation in the broadside direction, in which the antenna shows a maximum gain of 4 dBi in bidirectional broadside radiation. The proposed structure occupies a global size of 24 * 22 * 0.25 [mm.sup.3]. The outcomes are achieved making, therefore, the proposed antenna an excellent candidate for performed systems within X band range.
doi_str_mv 10.2528/PIERL20042504
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subjects Antennas (Electronics)
Broadband transmission
Design and construction
Equipment and supplies
Waveguides
title BROADBAND CIRCULARLY POLARIZED CPW-FED ASYMMETRICALLY-SHAPED SLOT PATCH ANTENNA FOR X BAND APPLICATIONS
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