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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2012-04-18
Antenna Ultra Wideband Enhancement by Non-Uniform Matching
By
Mohamed Hayouni,

    Dr. Mohamed Hayouni

    Sup'COM

    University of Carthage

    Tunisia

    Homepage

Ahmed El Oualkadi,

    Prof. Ahmed El Oualkadi

    Abdelmalek Essaadi University

    Morocco

    Homepage

Fethi Choubani,

    Dr. Fethi Choubani

    Sup'COM

    University of Carthage

    Tunisia

    Homepage

Tan Hoa Vuong,

    Dr. Tan Hoa Vuong

    ENSEEIHT

    University of Toulouse

    France

    Homepage

Jacques David

    Dr. Jacques David

    ENSEEIHT

    University of Toulouse

    France

    Homepage

Progress In Electromagnetics Research Letters, Vol. 31, 121-129, 2012
doi:10.2528/PIERL12031002 | Google Scholar

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 52 A/m with a convex corner whereas it does not exceed 33 A/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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Citation
Mohamed Hayouni, Ahmed El Oualkadi, Fethi Choubani, Tan Hoa Vuong, and Jacques David, "Antenna Ultra Wideband Enhancement by Non-Uniform Matching," Progress In Electromagnetics Research Letters, Vol. 31, 121-129, 2012.
doi:10.2528/PIERL12031002
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