Dual-Circularly Polarized Patch Antenna Using Field Transformation Medium

作者：Shi, Hongyu; Giddens, Henry; Hao, Yang^*

来源：IEEE Antennas and Wireless Propagation Letters, 2017, 16: 2869-2872.

DOI：10.1109/LAWP.2017.2750618

• Broad axial ratio angle band
• dual-circularly polarization
• field transformation (FT)

In this letter, a dual-circularly polarized antenna based on the field transformation (FT) method is presented. The antenna consists of a dual-linearly polarized feeding patch antenna, and an FT waveplate as a reflector. The FT waveplate enables the realization of a circularly polarized antenna that has a very wide-angle band and unidirectional radiation pattern in both polarizations. At 2.4 GHz, the axial ratio of the proposed patch antenna is below 3 dB with the angle band from -44 degrees to +50 degrees in yz plane and from -42 degrees to 41 degrees in xz plane. The gain of the proposed dual-circularly polarized patch antenna is 7.7 dB. The isolation between the two ports is better than 15 dB.

• 出版日期2017
• 单位西安交通大学