| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce difference of an amplitude characteristic and of a phase characteristic between a plurality of transmission units caused by the amplitude phase shift of respective feedback paths of the transmission units. <P>SOLUTION: A communication device comprises: a plurality of transmission units for converting a transmission signal into a signal having a frequency band used for communication and transmitting it; a reference signal output unit for outputting a reference signal having the same band width as that of a transmission signal and also outputting a converted reference signal by converting the reference signal into a reference signal having the same frequency band as that of the transmission signal each transmission unit transmits; a feedback unit which is provided relative to each transmission unit and converts a transmission signal including a signal transmitted by its corresponding transmission unit and the converted reference signal into an FBK signal having the same frequency band as that of the transmission signal; and an amplitude phase correction unit for correcting the amplitude phase of the FBK signal calculating the amplitude phase shift in the feedback unit, based on the converted reference signal included in the FBK signal converted by the feedback unit, which is provided relative to each transmission unit and corresponding to its transmission unit, and the reference signal output by the reference signal output unit. <P>COPYRIGHT: (C)2012,JPO&INPIT |
