Patent ID: 8165535
Filing Date: 2012-04-24
Classification: H04B

Abstract:
1. A method comprising: providing an antenna operative over a plurality of radio frequency (RF) bands; providing a transmit switch comprising a first signal transmission path and a second signal transmission path, the first signal transmission path configured for delivering transmit signals to the antenna at a first frequency, and the second signal transmission path configured for delivering transmit signals to the antenna at a second frequency different from the first frequency; providing a receiver switch comprising a first inductor having a first inductance value, a second inductor having a second inductance value that is larger than the first inductance value, a first capacitor, a first switch with one switch terminal connected to the first inductor and another switch terminal connected to the second inductor, and a second switch with one switch terminal connected to the first capacitor and another switch terminal connected to the second inductor; during a transmit mode of operation, configuring the first and second switches to place the first and the second inductors in a series connection, the series connection of the first and the second inductors operating in parallel with the first capacitor to present a high impedance that maximizes signal power transmitted out of the antenna; and during a receive mode of operation, configuring the first switch to disconnect the second inductor from the first inductor, thereby minimizing insertion loss for a signal received from the antenna and propagated through the first inductor.