Scott M. Gillette, Michael Geiler, J. Adam, A. Geiler
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Ferrite-Based Reflective-Type Frequency Selective Limiters
Ferrimagnetic materials possess unique nonlinear properties at RF/microwave frequencies that enable analog signal processing effects such as frequency selective limiters (FSL) with low-loss (< 3 dB), low power thresholds (< -20 dBm), flat limiting response, high selectivity (< 5 MHz), and rapid response times (< 5 us). FSL technologies can be used to add capability to radar, electronic warfare, and communications systems by protecting them from high power microwave attack, preserving sensitivity to signals-of-interest, and extending front end receiver dynamic range. Recent developments in reflectivetype FSL devices are presented here.