INTERFERING SIGNAL CONTROLLING APPARATUS USING A SELECTIVE FREQUENCY PHASE CONVERTER CAPABLE OF REDUCING A SIGNAL LOSS OF NECESSARY SPECIFIC FREQUENCY BAND BY CONTROLLING A USE OF A BAND PASS FILTER AND AN INTERFERING SIGNAL CONTROLLING METHOD

摘要

PURPOSE: An interfering signal controlling apparatus and an interfering signal controlling method using a selective frequency phase converter are provided to effectively eliminate the interfering signal not only narrow frequency band but wide frequency band using a differential amplification principle.;CONSTITUTION: A first phase converter(20) differential-outputs a first and a second signals including a phase difference of 180 angle by changing the phase of received RF signal. A second phase converter(21) changes selectively the phase of the signal of a specific frequency band as a specific size in the first signal. A third phase converter(22) changes selectively the phase of the signal of the specific frequency band as the specific size in the second signal. An adder(50) adds the output of the second phase converter and the output of the third phase converter. The specific frequency band signal of the second phase converter and the specific frequency band signal of the third phase converter not have a phase difference of 180 angle.;COPYRIGHT KIPO 2010