To easily correct phase differences that multiple reception systems have with high precision.
The IF part 1b of a receiver mixes its input signal with a local signal as the output of a local oscillator by using a mixer 3 to convert the frequency of the input signal. The output signal of one of systems of the receiver 1 is regarded as a reference output signal, phase differences from the output signals of other reception systems are detected by using a phase difference detector 7 in the receiver 1, and information on them is fed back to local signals of other reception systems to shift the phases of the local signals by using a DDS(direct digital synthesizer) 5b, so that the phase differences between the reference output signal and the output signals of the other reception systems are eliminated.
KONDO HISAKAZU
NODA HANAKO
MAEKAWA NAOSHI
