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Enhanced bandwidth and gain of compact microstrip antennas loaded with multiple corrugated split ring resonators

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  • Shobhit K. Patel
  • Christos Argyropoulos

Abstract

We present microstrip-based radiating structures loaded with multiple corrugated and non-corrugated split-ring resonator (SRR) metamaterials. We analyze how the change in gap spacing between multiple corrugated and non-corrugated SRRs can improve the bandwidth and gain performance compared to conventional SRR antenna designs. Regarding the corrugated designs, square teeth have been added to the outer edges of SRR rings. The microstrip antenna performance loaded with eight different SRR loads is analyzed. By changing the gap between the multiple SRR rings, the radiating response of the proposed antenna designs can be improved. Corrugated SRRs are also found to strongly improve the performance of conventional non-corrugated SRR-loaded antenna designs. The reflection coefficient, bandwidth, and radiation pattern results are presented and compared to previous relevant metamaterial microstrip antenna works. The highest obtained bandwidth is 420 MHz, which is achieved by three square teeth SRRs. The highest calculated gain is 7 dB and is achieved by loading two square teeth SRRs. The proposed antenna design can be tuned to different frequency bands by embedding microelectromechanical system switches in SRRs’ gaps. The proposed antennas have compact size combined with high bandwidth and gain performance.

Suggested Citation

  • Shobhit K. Patel & Christos Argyropoulos, 2016. "Enhanced bandwidth and gain of compact microstrip antennas loaded with multiple corrugated split ring resonators," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 30(7), pages 945-961, May.
    • Handle: RePEc:taf:tewaxx:v:30:y:2016:i:7:p:945-961
    DOI: 10.1080/09205071.2016.1167633
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