级联式高功率微波限幅防护装置

Cascaded waveguide limiter for hardening against high power microwave

针对单级等离子体限幅器在防护高功率微波时可能出现的功率泄漏问题，提出等离子体限幅器与PIN限幅器在矩形波导中级联的新型防护装置。以功率为10GW、频率为1GHz高功率微波为例，通过计算单级等离子体限幅器的泄漏功率，分析比较了单级等离子体限幅器和级联式防护装置的防护性能。结果表明：对于单级等离子体限幅器不同情况的泄漏（即入射高功率微波场强小于限幅器击穿阈值场强和限幅器响应时间较长两种情况），采用级联式防护措施后，其泄漏功率被抑制在0．40W以下。

Single plasma limiter would induce leakage under attack of high power microwave（HPM）. A new cascaded protective device, which combines a plasma limiter and a PIN limiter, is presented to weaken the harmful leakage energy. The leakage power of single plasma limiter is calculated, then the performance of the cascaded device is studied based on simulation of PIN limiter. The numerical results show that the microwave power leaked through the cascade limiter is less than 0.40 W under HPM attack with 10 GW, 1 GHz pulses.