A Wideband Circularly Polarized Cassegrain Antenna

摘要

A wideband Terahertz (THz) Cassegrain circularly polarized (CP) antenna is designed and proposed in this paper. By optimizing, the proposed antenna achieves a wide impedance bandwidth of 42.8% from 0.11-0.17 THz for the reflection coefficient less than -15 dB. The axial ratio (AR) is less than or equal 3dB in this frequency band. The maximum gain of the antenna is 27.6dBi at 0.14THz.