一种紧凑型高功率宽带微波源

A compact high-power wideband microwave source

设计了一种高功率宽带微波辐射装置,谐振器采用传输线型谐振器,其中,天线采用单锥喇叭。整个宽带微波产生装置具有结构紧凑、谐振频率较低的特点。用时域有限差分对该装置进行了数值模拟,模拟结果为:辐射场中心频率272 MHz,带宽13.5%。装置与高压脉冲源联试,开关内充电电压为71 kV时,辐射场中心频率为197 MHz,辐射场带宽达到24%,峰值辐射因子为28.3 kV。

A simple, mobile and robust high power wideband source has been developed. It is comprised of a ring switch, a transmission line, and a conical antenna. The resonance is simulated by a finite difference time domain（FDTD） software. A wideband microwave is obtained with a radiation centered on 272 MHz ,and a percent bandwidth of about 13.5%. The resonance system employs a high power source to obtain a voltage-charging level of 71 kV in the switch. The experiment a results show that the radiation electric field is 8.58 kV/m at 3.3 m range, and the radiation is centered on 197 MHz with a percent bandwidth of about 24%.