An improved ferrite nonlinear (NL) loss theory is developed for polycrystal ferrite microstrip limiters upon the high-power microwave (HPM) environment. The NL critical threshold equation and equivalent loss model are derived from the field coupling mechanism between spin waves and microwave pulse. Thus, the equivalent NL loss behavior with the microwave waveform parameters (pulse duration and power) is implanted in the ferrite limiter model to perform the numerical simulation through the commercial electromagnetic tool. The measured limiting data at pulse duration with 60, 80, 100, and 200 ns are in good agreement with the equivalent simulation results.

中文翻译：

---

基于改进非线性损耗模型的大功率微波应用X波段铁氧体微带限幅器

针对高功率微波 (HPM) 环境下的多晶铁氧体微带限幅器开发了一种改进的铁氧体非线性 (NL) 损耗理论。NL临界阈值方程和等效损耗模型是从自旋波和微波脉冲之间的场耦合机制推导出来的。因此，将具有微波波形参数（脉冲持续时间和功率）的等效 NL 损耗行为植入铁氧体限制器模型中，以通过商用电磁工具进行数值模拟。在 60、80、100 和 200 ns 的脉冲持续时间下测得的极限数据与等效仿真结果非常吻合。