A Dual Circularly Polarized Horn Antenna in Ku-Band Based on Chiral Metamaterial

作者：Ma Xiaoliang^*; Huang Cheng; Pan Wenbo; Zhao Bo; Cui Jianhua; Luo Xiangang

来源：IEEE Transactions on Antennas and Propagation, 2014, 62(4): 2307-2311.

DOI：10.1109/TAP.2014.2301841

• Ku-band
• chiral metamaterial
• circularly polarized antenna

A dual circularly polarized horn antenna, which employs a chiral metamaterial composed of two-layered periodic metallic arc structure, is presented. The whole antenna composite has functions of polarization transformation and band-pass filter. The designed antenna produces left-handed circularly polarized wave in the band from 12.4 GHz to 12.5 GHz, and realizes right-handed circularly polarized wave in the range of 14.2 GHz-14.4 GHz. Due to low loss characteristic of the chiral metamaterial, the measured gains are only reduced by about 0.6 dB at the above two operation frequencies, compared with single horn antenna. The axial ratios are 1.05 dB at 12.45 GHz and 0.95 dB at14.35 GHz.

• 出版日期2014-4
• 单位中国科学院光电技术研究所