PURPOSE: To make it possible an excellent inter-terminal coupling attenuation value by a simple constitution, by forming two transformers with their numbers of times of winding set adequately.

CONSTITUTION: The center tap of transformer T2 is led out with N1-time winding and that of transformer T3 is also led out with N2-time winding. Here, the center taps of transformers T2 and T3 are used as input terminals to apply TV signals; the 1st output signal is obtained between one-side output terminals 1 and 1' of transformers T2 and T3, and the 2nd output signal is also led out between other-side output terminals 2 and 2' of T2 and T3. The simple constitution can therefore obtain an excellent inter-terminal coupling attenuation value.