Patent ID: 8022786
Filing Date: 2011-09-20
Classification: H04B

Abstract:
1. A front-end circuit of the wireless transceiver, comprising: an antenna unit, comprising an antenna and a first impedance matching circuit; a receiver, connected to said antenna unit; and a transmitting block, connected to said antenna unit and said receiver, comprising a transmitter and a first switch, wherein said receiver and said transmitting block are integrated within a single chip; wherein, when said front-end circuit is receiving a signal, said first switch is turned off and when said front-end circuit is transmitting a signal, said first switch is turned on, so as to connect said transmitting block with said antenna, wherein said transmitting block further comprises a second impedance matching circuit, thereby, the impedance matching between said antenna unit and said transmitting block or between said antenna unit and said receiver can be achieved, and wherein the number of said antenna unit is two, wherein said antenna units are connected to said transmitting block and said receiver through a second switch respectively.