Patent ID: 7079817
Filing Date: 2006-07-18
Classification: H04B

Abstract:
1. A radio communication device comprising: an antenna common for transmitting and receiving for meeting a first frequency band and a second frequency band; a first transmitting unit for transmitting so as to meet the first frequency band; a first receiving unit for receiving so as to meet the first frequency band; a first antenna sharing device for connecting an output part of the first transmitting unit to an input part of the first receiving unit; a second transmitting unit for transmitting so as to meet the second frequency band; a second receiving unit for receiving so as to meet the second frequency band; a second antenna sharing device for connecting an output part of the second transmitting unit to an input part of the second receiving unit; a wave separator for connecting the antenna to the first antenna sharing device and the second antenna sharing device, wherein the wave separator is adapted to perform a filtering operation; a transmitting band switching signal generating unit for operating either of the first transmitting unit and the second transmitting unit to generate a transmitting band switching signal for switching a transmitting frequency band; a receiving band switching signal generating unit for operating either of the first receiving unit and the second receiving unit to generate a receiving band switching signal for switching a receiving frequency band; and a control unit for controlling the operations of the first and second transmitting units, the first and second receiving units, the transmitting band switching signal generating unit and the receiving band switching signal, generating unit.