Switching system for use with a radio transmitter or the like to adapt the same for operation at two different power levels, including a flexible circuit connected to stages of the transmitter and to a switch to control the power level of the signal transmitted. The flexible circuit is very thin so that...http://www.google.com/patents/US4189676?utm_source=gb-gplus-sharePatent US4189676 - Switching system utilizing flexible circuit with transmission line for matched impedance connections
