volume | PIER Journals

Abstract

The wideband gap-coupled configuration of an E-shape microstrip antenna, with two C-shape microstrip patches and loaded with a parasitic printed rectangular loop element, is proposed. In 1200 MHz frequency range and on a substrate thickness of 0.11λ_g, with an optimum inter-spacing between the frequencies of TM₁₀ and TM₀₂ resonant modes of the rectangular patch along with TM₂₀ resonant mode frequencies on the parasitic C-shape and printed rectangular loop element, the maximum reflection coefficient bandwidth of 945 MHz (68.11%) is achieved. The gap-coupled antenna offers broadside radiation characteristics across the complete bandwidth with a peak broadside gain of 9 dBi. Design methodology to realize wideband gap-coupled configuration in different frequency ranges is presented which yields similar result. The antenna response is experimentally verified, which yields close agreement against the simulated result.

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33. CST Microwave Studio, Version 2019.

Professor Venkata A. P. Chavali

Professor Amit A. Deshmukh