Circularly polarized slot‐coupled square dielectric resonator antenna for WLAN applications

In this article, an off‐centered microstrip line fed square slot‐coupled square dielectric resonator antenna (SDRA) with circular polarization characteristics for WLAN applications is reported. Two orthogonal modes TE211y and TE121x of SDRA are responsible for realizing the CP mechanism. To generate...

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Published in:Microwave and optical technology letters 2018-11, Vol.60 (11), p.2787-2794
Main Authors: Kumari, Reena, Gangwar, Ravi Kumar
Format: Article
Language:English
Subjects:
Antennas
axial ratio
Circular polarization
dielectric resonator antenna
Dielectrics
Local area networks
microstrip line
Microstrip transmission lines
Polarization characteristics
Radio antennas
Resonators
Wireless networks
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description In this article, an off‐centered microstrip line fed square slot‐coupled square dielectric resonator antenna (SDRA) with circular polarization characteristics for WLAN applications is reported. Two orthogonal modes TE211y and TE121x of SDRA are responsible for realizing the CP mechanism. To generate CP waves, the proposed off‐centered microstrip feedline is intersecting the square ring slot in two successive points for producing a path difference of λ/4 (quarter‐wavelength) and a phase difference of 90°. The proposed configuration is shown that the measured −10‐dB |S11| and 3‐dB axial ratio (AR) bandwidth of 9.25% and 7.94%, respectively and maximum total gain of 4 dB. The proposed antenna is designed, simulated and tested. Good agreement between measured and simulated results is achieved.
doi_str_mv 10.1002/mop.31460
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subjects Antennas
axial ratio
Circular polarization
dielectric resonator antenna
Dielectrics
Local area networks
microstrip line
Microstrip transmission lines
Polarization characteristics
Radio antennas
Resonators
Wireless networks
title Circularly polarized slot‐coupled square dielectric resonator antenna for WLAN applications
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