A dual-patch polarization rotation reflective surface and its application to wideband wide-beam low-profile circularly polarized patch antennas

作者：Chen, Qiang^*; Zhang, Hou; Xiong, Ling Heng

来源：International Journal of RF and Microwave Computer-Aided Engineering, 2019, 29(2): e21533.

DOI：10.1002/mmce.21533

• circularly polarized
• dual-patch
• low profile
• PRRS
• wideband
• wide-beam

This study investigates the use of a polarization rotation reflective surface (PRRS) to construct a wideband, wide-beam, low-profile circularly polarized (CP) patch antenna. The device is composed of a feeding monopole antenna and a novel PRRS-based dual-patch artificial magnetic conductor (AMC) cell structure. The PRRS has two polarization rotation (PR) frequency points, generated by properly adjusting the width between square and L-shaped metallic patches. A large PR band of 35.5% (5.1-7.3 GHz) was achieved by combining two adjacent PR frequency points. The PRRS-based patch antenna impedance bandwidth was measured to be 28.6% (5.1-6.35GHz), with a 3 dB axial ratio (AR) bandwidth of 21.8% (4.8-6.4 GHz) and a profile of 0.045(0). Additionally, the proposed antenna exhibited the largest AR beamwidth (to our knowledge) of 175 degrees and 128 degrees in the xoz and yoz planes, respectively. It also produced a high broadside gain of 6.7 dBic within the operational bandwidth.

• 出版日期2019-2
• 单位中国人民解放军空军工程大学