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Antenna Ultra Wideband Enhancement by Non-Uniform Matching

Abstract : In this paper, antenna ultra wideband enhancement by non-uniform matching is proposed. The antenna consisted of a rectangular shaped radiator with two convex circled corners. Simulated results using CST Microwave Studio and measured results of a fabricated antenna concord well to prove that it can operate from about 3.5 GHz to 4.6 GHz and from 7.4 GHz to 12.7 GHz for S11(dB) <-10 dB. In addition, a good impedance matching is noted in the IEEE radar engineering X band range since the return loss coefficient remains below -50 dB value at 9.5 GHz and can reach -45 dB at 11 GHz. A current density comparison at 11 GHz, supporting our argument, between a stepper corner and convex corner demonstrates that the current density can reach 52A/m with a convex corner whereas it does not exceed 33A/m for the antenna with a stepper corners. Radiation patterns at various frequencies and peak gains show clearly interesting features of such antennas.
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Submitted on : Friday, February 14, 2014 - 10:24:34 PM
Last modification on : Monday, July 4, 2022 - 9:03:45 AM
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  • HAL Id : hal-00947223, version 1



Mohamed Hayouni, Ahmed El Oualkadi, Fethi Choubani, T. H. Vuong, Jacques David. Antenna Ultra Wideband Enhancement by Non-Uniform Matching. Progress In Electromagnetics Research Letters, EMW Publishing, 2012, 31, pp.121-129. ⟨hal-00947223⟩



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