Abstract :
Low-level garnet limiters operating in the coincidence region have previously been reported at 4.2/spl deg/K. These devices, however, operate only within an octave frequency range, which is a function of the 4/spl pi/M/sub s/. For YIG at 4.2/spl deg/K, for example, this frequency range is 2.3 to 4.6 gc. This paper describes the application of impact ionization in bulk semiconductors to obtain low-level limiting, for which no such frequency limit exists in the microwave range.
