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Reconfigurable Compact Wideband Circularly Polarised Dielectric Resonator Antenna for Wireless Applications

Computers, Materials & Continua 2021年第8期68卷 2095-2109页

作者： Shahid Khan Xin Cheng Ren Haider Ali Camel Tanougast Abdul Rauf Safdar Nawaz Khan Marwat Muhammad Rizwan Anjum LCOMS ASECUniversity de LorraineMetz57070France School of Physics and Electronic Information Yanan UniveristyYanan761000China Department of Electronics Technology University of TechnologyNowshera24100Pakistan Department of Electrical Engineering National University of Sciences and TechnologyIslamabad44000Pakistan Department of Computer Systems Engineering University of Engineering and TechnologyPeshawar25120Pakistan Department of Electronic Engineering The Islamia University of BahawalpurBahawalpur63100Pakistan

In this work,a novel compact wideband reconfigurable circularly polarised(CP)dielectric resonator antenna(DRA)is *** L-shaped Dielectric resonator antenna is excited by an inverted question mark shaped *** arrangement of feed-line helps to generate two orthogonal modes inside the DR,which makes the design circularly polarised.A thin micro-strip line placed on the defected ground plane not only helps to generate a wideband response but also assist in the positioning of the two diode *** switches located at the left and right of the micro-strip line helps in performing two switching *** novel compact design offers the reconfigurability between 2.9–3.8 GHz which can be used for different important wireless *** the switching operation I,the achieved impedance bandwidth is 24%while axial ratio bandwidth(arbw)is 42%.For this switching state,the design has 100%CP ***,the switching operation II achieves 60%impedance bandwidth and 58.88%arbw with 76.36%CP *** proposed design has a maximum measured gain of 3.4 dBi and 93%radiation *** proposed design is novel in terms of compactness and performance *** prototype is fabricated for the performance analysis which shows that the simulated and measured results are in close agreement.

关键词： Circularly polarized DRA arbw bandwidth gain radiation efficiency

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