Optimal design and experiment on high power wideband patch antenna

A 300 MHz-center frequency wideband patch antenna has been developed for high power wideband electromagnetic (EM) pulse radiation, small signal test and high power experiments were performed. The two-layer-patch antenna structure was optimized by Taguchi global optimization method associated with EM simulation software, 60.2% impedance bandwidth (VSWR<3) and 8.1 dB maximum gain were obtained in the simulation, and then insulation design was performed to enhance the antenna’s power capability. The measured S11 in the small signal experiment matches well with the simulated result, and the measured impedance bandwidth reaches 64.2%. Fed by the 3 ns-long bipolar pulse with -89 kV/+81 kV peaks in high power experiments, the radiation factor reaches 75.2 kV with 46% percent bandwidth of the rad