A dual-band circularly polarized antenna with wide HPBWs for CNSS applications

作者：Li, Chao^*; Zhang, Fushun; Zhang, Fan; Sun, Fukun; Yang, Kaiwen

来源：IEICE Electronics Express, 2018, 15(12): 20180409.

DOI：10.1587/elex.15.20180409

• dual-band
• circularly polarized
• wide HPBWs

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 degrees 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 anten- na exhibits two overlapped impedance and axial ratio relative bandwidth of 2.8% and 3.3%. Wide HPBWs of over 122 degrees 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.

• 出版日期2018-6-25
• 单位西安电子科技大学