Cutoff frequency of microwave coaxial multimode limiter

Broad-band microwave diode limiters are realized in a coaxial low-pass filter structure. It is shown here that there is a cutoff frequency of the coaxial limiter above which the limiter will not function as a limiter. The cutoff frequency depends on diode package inductance, package capacitance, and the capacitances of the coaxial structure used to realize the limiter.