PMI Model No. PSX-500M18G-60-SFF is a pin diode transfer switch that operates over the 500 MHz to 18 GHz frequency range.  Specifications include 60 dB minimum isolation, 3.0 dB maximum insertion loss, VSWR In/Out 1.9:1 maximum, +20 dBm CW maximum input power and 100 ns maximum switching speed. This model incorporates a TTL compatible driver for easy system integration. 

Hermetically sealed units are available as an option.  Features SMA (F) RF connectors, light weight design 1.4 oz and package size of 1.0" x 1.0" x 0.5".

http://www.pmi-rf.com/products/switches/PXS-500M18G-60-SFF.htm