INTERFERENCE SIGNAL CANCELING CIRCUIT OF WIRELESS REPEATER USING IN-PHASE REMOVING METHOD, CONCERNED WITH REMOVING INTERFERENCE SIGNAL COMPONENT INCLUDED IN RECEIVED SIGNAL

摘要

PURPOSE: An interference signal canceling circuit of a wireless repeater using an in-phase removing method is provided to detect only a pure original signal component by removing an interference signal component included in a received signal. CONSTITUTION: A signal input unit(100) includes an in-phase distributor(100a) for receiving a mixed signal and distributing it as having the same phase. A signal separator(110) performs phase shifting for each combined signal outputted from the in-phase distributor(100a) and outputs an original signal component having a low power level without a certain dBm among the signal component inputted to the signal input unit(100) and the combined signal. An interference signal canceling unit(120) receives an output signal of the signal separator(110), combines it with 180 degree inverse phase to cancel an interference signal and output only an original signal component.