Apparatus and Method for Elimination of Outband Interference Signal

The present invention discloses for the out-of-band interference cancellation apparatus and method. The present invention includes a first mixer to frequency down-shift the received signal including a signal-of-band interference; Filter unit which extracts said out-of-band interference signal from a received signal down-shift of the down-shift; The outer band and the down-shift the interference signal frequency up-shifted second mixer for returning to the original frequency band; And it has its features in that it includes a unit for removal by subtracting the return an out-of-band interference signals from the received signal. According to the present invention, a small wonchiphwa possible by the application of a new structure, there is an effect capable of improving the insertion loss is less when the reception sensitivity while removing the interference signal applied to the out-of-band. SAW filters, interference cancellation, Interference Signal, mismatch calibration