Compact high-isolation directive UWB transmit/receive antenna pair for radar applications

In this paper, we presented a compact directive UWB transmit receive antenna pair. The basic operation of the antenna was discussed and the effect of the dimensions on the bandwidth, pattern and isolation performance was investigated. The antenna was fabricated and measured. The measurement and simulation results showed good agreement. The measured isolation was better than 21 dB and the measured VSWR was better than 2.3 over the band 0.9 – 3 GHz.