A circuit for canceling noise components is provided for a radio wave
receiver which receives a long wave standard radio wave. The circuit
includes a multiplier, a divider, a differentiation circuit and an adder,
and obtains a signal by shifting the phase of a carrier signal by 90
degrees, wherein the carrier signal has the same frequency and the same
phase as those of the carrier of a received signal outputted from a
carrier reproduction circuit. Thereby, it is possible to certainly remove
the noises in the vicinity of a received frequency.