Simulation Analysis of Front Door Coupling of High Power Microwave to RF Channel

High power microwave enters the RF channel through the front door coupling and can cause damage to sensitive devices. This paper designs and simulates a typical RF front-end protection device limiter. The field coupling simulation model of the antenna is used to conduct fieldcircuit co-simulation to analyze the influence of high power microwave signal parameters on the RF channel interference. The simulation method can monitor coupling signal from the antenna port to each node of the back-end circuit under the high power microwave environment. Additionally, it characterizes the actual high power microwave impact of every circuit module, thus enabling a foundation for fieldcircuit co-protection design in a later phase.