Patent ID: 6912406
Filing Date: 2005-06-28
Classification: H04B

Abstract:
1. A mobile communication device comprising: an antenna configured to receive a first signal in a first frequency band and a second signal in a second frequency band; first receiver circuitry configured to receive signals in the first frequency band; a switch having a first position; and a first diplexing network coupled to the antenna, the first diplexing network also coupled to the switch, and the first diplexing network also coupled to the first receiver circuitry, wherein the first diplexing network is configured to pass the signals in the second frequency hand to the switch, wherein the mobile communication device further comprises a second diplexing network coupled to the switch at the first position, the second diplexing network corresponding to the second frequency band, and wherein the first diplexing network, the second diplexing network, and the switch act in conjunction so that signals in the first frequency band are presented with an open circuit after the switch.