A multi-band communication device with a front end antenna switch module and shared bias circuit is disclosed. Control inputs determine signal routing and amplifier biasing in response to the communication device's mode or band of operation. A received signal is routed to an active path, which corresponds...http://www.google.com/patents/US7729674?utm_source=gb-gplus-sharePatent US7729674 - Multiband or multimode receiver with shared bias circuit
