| 摘要 |
<P>PROBLEM TO BE SOLVED: To simultaneously down-convert RF signals in a plurality of frequency bands with one mixer and to perform gain control having frequency selectivity for each of a plurality of low frequency signals. Ž<P>SOLUTION: A wireless communication device 100 includes a LO signal generation unit 103 which generates a plurality of LO signals 103A corresponding to frequencies of a plurality of input RF signals 102A, an addition unit 104 which generates an addition signal 104A by adding the plurality of LO signals 103A generated by the LO signal generation unit 103, and a mixer 105 which generates a plurality of baseband signals 105A by mixing the plurality of RF signals 102A with the addition signal 104A generated by the addition unit. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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