| 摘要 |
PROBLEM TO BE SOLVED: To provide a receiving circuit suitable to be used for an adaptive array antenna system or the like and capable of exactly reproducing propagation delay phase characteristics and especially having a small-scale configuration to be obtained by altering a conventional configuration to some extent by controlling/managing a phase error in a receiving part. SOLUTION: In the receiving circuit for obtaining a low frequency output signal by converting the frequency of an inputted high frequency signal, on the basis of the signal of phase comparison to be performed when generating a local oscillator signal inside the receiving circuit, a passing phase error to be added by a receiving part inside this receiving circuit is removed. In the receiving circuit for converting the frequency through a mixer circuit by using a PLL circuit, a passing phase to be added by the receiving part in the receiving circuit is corrected and fixed by a control circuit following the mixer circuit while using a phase comparing signal from the PLL circuit. |
