PURPOSE: To prevent deterioration in the demodulation efficiency when a high frequency signal is weak by improving deterioration in a phase characteristic of a demodulation signal, reduction in reception sensitivity and lockout of a voltage control means or the like.

CONSTITUTION: An intermediate frequency signal from a channel selection section 22 is inputted to a phase detector 28 and a synchronization detector 30 through a BPF 24 and an intermediate frequency AGC amplifier 26. A phase difference signal is given to an LPF 32, in which a DC control signal Sc is generated. A noise phase voltage compensation circuit 33 reduces a voltage change AVn of a noise component changed by a control voltage Sc from the LPF 32 and a change in an AGC voltage Sv from an AGC detection circuit 38 by the voltage change ΔVn of the noise component to add or subtract it to/from a control voltage from the LPF 32 to provide an output to a VCO 34. In this operation, the voltage change shifted by a free-run frequency of the voltage control means is compensated by a change in an input electric field.