Patent ID: 7676244

Claim:
A multi-mode/multi-band wireless transceiver comprising: a tunable duplexer including transmission and reception channel filters of which transmission and reception channel filtering frequencies are respectively controlled by an external element; transmission and reception routes corresponding to a plurality of service bands in a Frequency Division Duplex (FDD) mode and a Time Division Duplex (TDD) mode, respectively; a reception band switch for selectively connecting one of the reception routes, which corresponds to a current service band, to the reception channel filter, wherein the reception routes comprise a high band reception route, an intermediate band reception route, and a low band reception route for supporting signals of the plurality of service bands; a transmission band switch for selectively connecting one of the transmission routes, which corresponds to a current service band, to the transmission channel filter, wherein the transmission routes comprise a high band transmission route, an intermediate band transmission route, and a low band transmission route for supporting signals of the plurality of service bands; and a control portion for controlling the transmission and reception channel filtering frequencies to correspond to transmission and reception channels of the current service band, respectively, and for controlling the reception and transmission band switches to correspond to the current service band.