GaAs Fully Monolithic X Band SPDT Switch with Integrated TTL Compatible Driver

This paper describes the performance of a GaAs monolithic X-Band SPDT switch with integrated BFL driver TTL compatible. A single TTL command voltage is needed to switch the RF signal from one channel to the other. From 8 to 12 GHz, the insertion loss is less than 1.6 dB and the isolation of the disconnected channel greater than 21 dB. The response time of the switch, which was not optimized in the design, was found to be 2 ns. To our knowledge this is the first fully monolithic mixed microwave and digital SPDT switch to be published.