The LM-0518-10-1W-SHS-2-F from PMI is a high power limiter that operates from 500 MHz to 18 GHz. It can handle a peak power of up to 100 Watts with a pulse width of 1usec. This limiter has an insertion loss of less 2 dB and a VSWR of 2.0:1. It is available in a module that measures 1 x 1 x 0.4 inches with SMA female connectors.
