volume | PIER Journals

Abstract

A compact stack antenna consisting of square loop resonators, aperture couples, feed line and the perturbation for dual-band and circular polarization (CP) applications is proposed in this paper. This perturbation applies both dual-mode and orthogonal mode effects existing in the square loop resonator to present wide-band and CP characteristics simultaneously. The stack antenna presents the desired bands of 2.46 GHz with bandwidth (BW) = 160 MHz (6.58%) and 5.28 GHz with BW = 450 MHz (8.52%). The circular polarizations for dual-band are demonstrated with axial ratio (AR) spectrum and orthogonal modes. The proposed antenna is successfully simulated and measured with frequency responses, radiation patterns and current distributions.

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24. , , , HFSS version 11.0, Ansoft Software Inc., 2007.

Prof. Ji-Chyun Liu

Dr. Bing-Hao Zeng

Dr. Chin-Yen Liu

Dr. Hui-Chi Wu

Dr. Chung-Chi Chang