| 摘要 |
PROBLEM TO BE SOLVED: To provide a space diversity receiving apparatus in which a great in-phase composite output is obtained by adopting a reference synchronization system and performing the in-phase composition of both reception signals while correcting a phase difference and a spatial phase difference of local signals. SOLUTION: An in-phase composition machine 15 includes a spatial phase difference detection circuit 30 for detecting the spatial phase difference from IF signals of both a main receiver 13 and a sub receiver 14 and a local phase difference detection circuit 40 for detecting the phase difference of both the local signals. A phase shift circuit 37 corrects a phase shift in the IF signal of the sub receiver on the basis of both the spatial phase difference and the local phase difference and in-phase composition is then performed in an adder circuit 38. A demodulator 16 reproduces a transmission signal from the output after the in-phase composition. COPYRIGHT: (C)2008,JPO&INPIT
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