ANTENNA SHARING DEVICE FOR COMMUNICATION SIGNALS OF WIRELESS HANDSET AND TV BROADCASTING SIGNALS

摘要

PURPOSE: An antenna sharing device for communication signals of a wireless handset and TV broadcasting signals is provided to be capable of enhancing the receipt sensitivity of the TV broadcasting signals and the communication signals with low costs and a simple and compact structure. CONSTITUTION: An antenna(ANT) commonly receives the communication signals of a wireless handset and TV broadcasting signals. A phone LC resonating part(24) forms an LC resonator for CDMA communication signal frequency band and is connected to a front end of a phone duplexer(14). A TV LC resonating part(22) forms an LC resonator for TV broadcasting signal frequency band and is connected to a front end of a TV tuner(12). A switch part(20) connects the antenna(ANT) to the TV LC resonating part(22) or to the phone LC resonating part(24) by a switching control signal provided in accordance with a TV operation mode or a communication operation mode.