Simple broadband circularly polarized monopole antenna with two asymmetrically connected U-shaped parasitic strips and defective ground plane

Hussein Alsariera, Z. Zakaria, A. A. M. Isa, Sameer Alani, M. Y. Zeain, Othman S. Al-Heety, S. Ahmed, Mussa Mabrok, R. Alahnomi

Abstract


A simple compact broadband circularly polarized monopole antenna, which comprises a simple monopole, a modified ground plane with an implementing triangular stub and two asymmetrically connected U-shaped parasitic strips, is proposed. Simulation results show that the proposed compact antenna (0.62λo×0.68λo) achieves a 10-dB impedance bandwidth (IBW) of 111% (1.7 to 5.95 GHz) and a 3-dB axial ratio bandwidth (ARBW) of 61% (3.3–6.2 GHz) with a peak gain between 2.9–4 dBi for the entire ARBW. With its broad IBW and ARBW, compact size and simple structure, the proposed antenna is suitable for different wireless communications.


Keywords


axial ratio (AR); broadband antenna; circularly polarised (CP); monopole antenna;

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DOI: http://doi.org/10.12928/telkomnika.v18i3.14313

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