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2016-09-20
A Broadband Circularly Polarized Antenna Based on Cross-Dipoles
By
Progress In Electromagnetics Research Letters, Vol. 62, 91-96, 2016
Abstract
In this paper, based on cross-dipoles, a right-handed circularly polarized (RHCP) antenna with both broad impedance and axial-ratio (AR) bandwidth is proposed. Moreover, metal vias and branches are loaded to the cross-dipoles aiming to decrease the size of the antenna. The measured results show that a broadband impedance matching bandwidth ranging from 1.83 to 3.42 GHz for S11 less than -10 dB is obtained. Meanwhile, the 3-dB axial-ratio bandwidth is more than 29.0%, and the peak gain of the antenna is about 7.3 dBi with small variation at 2.5 GHz. A prototype is fabricated and measured for validating the design. The good agreements between the simulated and measured results show that the proposed antenna maybe a good candidate in circularly polarized (CP) antenna family.
Citation
Zhanbiao Yang, Xin Huai Wang, Le Kang, Hao Wang, Jianhui Bao, and Xiao-Wei Shi, "A Broadband Circularly Polarized Antenna Based on Cross-Dipoles," Progress In Electromagnetics Research Letters, Vol. 62, 91-96, 2016.
doi:10.2528/PIERL16060601
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