JAMMING RADIO WAVE REMOVER

PURPOSE:To enable the lowering of jamming radio wave components effectively by a composition means which composes outputs of modulators to supply a resultant output to a subtraction division means as a subtraction signal. CONSTITUTION:A main channel signal S20 is supplied to subtractor 32 as input terminal T1 and one one signal divided 34 is supplied to a power divider 36 through a switching circuit 48. An auxiliary channel signal S21 supplied through an input terminal T2 is divided equally 38, one signal is amplified 40 to be divided 44 into I and Q signals and generated as base band signals S22a and S22b of the I and Q signals with mixers 46a and 46b to be supplied to closed loop offset voltage compensation amplifying sections CLA1 and CLA2. After a closed loop offset voltage compensation is performed, the base band signals are supplied to integrators 56a and 56b. Then, with modulators 58a and 58b, the I and Q signals derived 42 are modulated by modulation signals S24a and S24b integrated 56a and 56b and power composed by the use of a power combiner 64 to be supplied to a subtractor 32. Thus, a jamming radio wave component signal equivalent to the signal S21 is subtracted from the signal S20 to be derived as a jamming radio wave removal signal S30.