Patent ID: 8861687

Claim:
An integrated hybrid circuit applied to a digital subscriber loop, the integrated hybrid circuit comprising: a transmission unit for generating a pair of upstream signals according to a user transmission signal; a transceiver coil for transmitting the pair of upstream signals to a central office through a twisted pair and receiving a pair of downstream signals from the central office through the twisted pair; a transceiver circuit coupled to the transmission unit for coupling the pair of upstream signals to the transceiver coil or coupling the pair of downstream signals from the transceiver coil, wherein the transceiver circuit comprises two transceiver units; a hybrid matching circuit comprising two hybrid matching circuit units, wherein each hybrid matching circuit unit is used for receiving an adjustment signal to adjust a selective impedance of the hybrid matching circuit unit and generating a matching signal, wherein the hybrid matching circuit unit utilizes the selective impedance and elements further comprised in the hybrid matching circuit unit to simulating a corresponding transceiver unit of the two transceiver units to generate the matching signal; and a receiving circuit coupled to the hybrid matching circuit and the transceiver circuit for receiving the pair of downstream signals and two matching signals generated by the hybrid matching circuit, and generating the adjustment signal according to an upstream rate, a downstream rate, and the two matching signals; wherein the transmission unit is further used for adjusting transmission power and bandwidth of the transmission unit according to the adjustment signal, and the receiving circuit is further used for adjusting filter bandwidth of the receiving circuit according to the adjustment signal.