Patent ID: 7313368

Claim:
A dual band transceiver architecture for wireless communication comprising: a first transmitting/receiving antenna for receiving and emitting a first band signal, and connected to a first band-pass filter and a first switch, and connected to a first power amplifier and a first balance/imbalance device by switching the switch; a second transmitting/receiving antenna for receiving and emitting a second band signal, and connected to a second band-pass filter and a second switch, and connected to a second power amplifier and a second balance/imbalance device by switching the switch; a high frequency integrated circuit comprising: a signal receiving portion, coupling with the first and second switches via the first and second balance/imbalance devices, respectively, down-converting the signal received by the first transmitting/receiving antenna to a first middle frequency and then to a first base frequency, down-converting the signal received by the second transmitting/receiving antenna to a second middle frequency and then to a second base frequency, a signal emission portion, coupling to the first and second switches via the first and second power amplifiers, respectively, and up-converting signals which will be emitted by the first or second transmitting/receiving antennas; and a single frequency synthesizer, providing band-mixing signals for the down-conversion of the signal receiving portion and the up-conversion of the signal emission portion, wherein the first middle frequency approximates the second middle frequency, wherein the signal receiving portion comprises: a receiving frequency selection unit for receiving the signals outputted by the first or second balance/imbalance device and connected to a first high frequency wave-mixing device; the first high frequency wave-mixing device for receiving the signals outputted by the receiving frequency selection unit and a first high frequency local oscillator and outputting the signals to a first middle frequency amplifying device; the first middle frequency amplifying device for receiving the signal transmitted by the first high frequency wave-mixing device, amplifying the signal and outputting the amplified signal to a first middle frequency wave-mixing unit; the first middle frequency wave-mixing unit for receiving the signal outputted by the first middle frequency amplifying device, performing wave-mixing after receiving a signal outputted by an orthogonal distributor, and outputting the signal to a first orthogonal filtering amplifying unit and a second orthogonal filtering amplifying unit; wherein the down conversion for the signal is accomplished by modulating the signals with different bands.