JAMMING RADIO WAVE REMOVER

摘要

PURPOSE:To obtain a stable jamming radio wave removal signal by providing a synthesization means which synthesizes outputs from a modulator to supply a synthesization signal to a subtraction dividing means as subtraction signal. CONSTITUTION:A main channel signal S1 is inputted into a subtracter 1 to be divided 2 in two and one part thereof is outputted as a jamming radio wave removal signal S3 while the other part thereof is divided 3 in two to be supplied to mixers 9a and 9b. An auxiliary channel signal S2 is divided 4 in two and one part thereof is divided 7 into I and Q signals while the other part thereof is divided into I and Q signals through a limiter amplifier 5 to be supplied to the mixers 9a and 9b. The signal S1 is multiplied by the signal S2 divided into the I and Q signals with the mixers 9a and 9b to make a modulation signal of the I and Q signals through amplifiers 10a and 10b, integrators 11a and 11b and sampling/holding circuits 12a and 12b. The I and Q signals divided 7 and the modulation signal from the circuits 12a and 1b are modulated in square 2 phases 2 by modulations 13a and 13b to perform a power synthesization with a power combiner 8. The results are inputted into the subtracter 1 as subtraction signal to obtain a jamming radio wave removal signal S3 at an output terminal by being subtracted from the signal S1.