High-frequency booster circuit with high-frequency signal transmission characteristics in the absence of power

摘要

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a booster stage circuit of a high frequency modulator (RF Modulator) for amplifying a high frequency signal input from an antenna, and in particular, a switching unit is constituted to transmit a high frequency signal inputted from an antenna Frequency booster circuit having a high-frequency signal transmission characteristic in a non-power-supply state in which a TV can be watched even when the power of the receiving apparatus except for the TV is completely turned off.