volume | PIER Journals

Abstract

A new design of broadband circularly polarized antenna is proposed. The antenna is composed of a square patch and a horizontal L-shaped stripline that feeds the patch at two orthogonal directions by two probes. The L-shaped feeding structure provides excitements of approximately equal amplitude and 90° phase difference and then good circularly polarized characteristics are obtained. Measured results show that the proposed antenna has 10-dB impedance bandwidth of 14.3% (2.27-2.62 GHz) and 3-dB axial-ratio bandwidth of 13.1% (2.3-2.62 GHz). Moreover, the measured gain is over 7 dBic within the effective band.

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Dr. Jianjun Wu

Dr. Xueshi Ren

Professor Ying-Zeng Yin

Dr. Zedong Wang