IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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A dual-band circularly polarized antenna with wide HPBWs for CNSS applications
Chao LiFushun ZhangFan ZhangFukun SunKaiwen Yang
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2018 Volume 15 Issue 12 Pages 20180409

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Abstract

A dual-band circularly polarized (CP) antenna with wide half power beamwidths (HPBWs) for compass navigation satellite system (CNSS) applications is proposed in this paper. The CP radiation is realized by feeding four sequentially rotated U-shape patches shorted to the ground at both ends of them with a 90° phase difference feeding network. Loading four parasitic arc-shape patches with one end shorted to the ground provides the dual-band CP operation. Experimental results show that the proposed antenna exhibits two overlapped impedance and axial ratio relative bandwidth of 2.8% and 3.3%. Wide HPBWs of over 122° at center frequencies (1.268 and 1.561 GHz) of the CNSS-2 B3 and B1 bands are obtained. With these good performances, the antenna can be a good candidate for CNSS applications.

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© 2018 by The Institute of Electronics, Information and Communication Engineers
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