Defected Ground Structure toward Cross Polarization Reduction of Microstrip Patch Antenna with Improved Impedance Matching
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Date
2019-04
Authors
Acharjee, Juin
Singh, Amit Kumar
Mandal, Kaushik
Mandal, Sujit Kumar
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
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Abstract
A new approach based on the incorporation of Z-shaped defected ground structure (DGS) in microstrip antenna (MSA) for improving impedance matching and cross polarization (XP) performances is proposed in this paper. Through detail analysis of the surface current densities, and input impedance, the proposed DGS is integrated into a rectangular MSA (RMSA) to realize flat relative XP reduction of 22 dB in the H-plane around broadside angular range of ±60 degrees. Further, an equivalent circuit model (ECM) for the proposed antenna is introduced by considering the mutual coupling in between the DGS and patch and the model is verified using circuit-system-EM co-simulation software, Advanced Design System (ADS). A prototype has been fabricated and tested for the validation of simulated results and it shows good agreement with each other. The antenna operates over 2.32-2.58 GHz with good far-field radiation characteristics and a peak gain of 2.8 dBi at the resonating frequency 2.4 GHz. Hence, the proposed design can be useful for the IEEE 802.11b applications.
Description
Citation
Radioengineering. 2019 vol. 28, č. 1, s. 33-38. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2019/19_01_0033_0038.pdf
https://www.radioeng.cz/fulltexts/2019/19_01_0033_0038.pdf
Document type
Peer-reviewed
Document version
Published version
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Language of document
en