RECEIVING DEVICE FOR RADIO FREQUENCY SIGNAL

A radio signal receiving device is provided to make power for driving an amplifier of an active antenna supplied from the PLL of a tuner, thereby simply designing a circuit and reducing noise of the tuner. A radio signal receiving device receives a radio frequency signal from an active antenna(10), which an AMP(Amplifier)(12) is built in, selects a certain frequency signal, and mixes the selected frequency signal with an oscillation frequency signal generated by a local oscillator(25) which is controlled and operated by a PLL(Phase Looped Lock)(26). The AMP(12) of the active antenna(10) is operated by power received from the PLL(26). The active antenna(10) consists of a receiver(11) capable of receiving the radio frequency signal and the AMP(12) for amplifying the signal received to the receiver(11).