不同频率高功率微波辐照下PCB电路的混合模拟

Mixed simulation of PCB circuit illuminated by high power microwave with different frequencies

采用一个混合模拟方法研究计算了不同频率高功率微波(HPM)辐照下含有PIN限幅器的PCB电路上的耦合信号该混合模拟方法基于瞬态电磁拓扑和器件/电路混合模拟技术,实现了场、路、器件的混合模拟,能够模拟计算出HPM辐照下屏蔽腔内PCB电路上的耦合信号。用该方法研究计算了频率分别为1,1.25和2.5 GHz的HPM在PC_B电路上的耦合信号,计算结果表明:当PCB电路无屏蔽腔时,1 GHz HPM的耦合信号最大,而PCB电路有屏蔽腔时,2.5 GHz HPM的耦合信号最大;PIN限幅器在耦合信号较大时具有较好的抑制作用。

This paper simulates the coupled signals on a PCB circuit,which includes a PIN limiter,generated by high power microwave(HPM)with different frequencies by using a hybrid simulation method.This hybrid method is based on the transient electromagnetic topology method and device/circuit mixed simulation.It realizes the hybrid simulation of fields,circuits,and devices.It can be employed to simulate the coupled signals on a PCB circuit within a shielding enclosure illuminated by HPM.This method is employed to obtain the coupled signals on the PCB circuit generated by HPM with the frequencies of 1GHz,1.25 GHz and 2.5GHz.The coupled signal generated by 1GHz HPM is the largest when the PCB circuit has no shielding enclosures.However,the coupled signal generated by 2.5GHz HPM is the largest when the PCB circuit has its enclosure.The results show that the PIN limiter has a good protection effect when the coupled signal is large.