A Matched Microwave Limiter (Correspondence)

The microwave limiter described in this correspondence is ideally reflectionless at all power Ievels. The matched limiter is achieved by simply adding a miniature 50-ohm rod resistor to a conventional dual-diode limiter. Although the resulting match is unilateral, it can be made bilateral by adding another diode-resistor combination. Response data of an S-band prototype unit illustrate its capabilities.