| 摘要 |
According to the radio receiver, a first path P 1 included in a frequency conversion circuit 12 does not have a filter, and a filter 171 for extracting a reference signal 74 c is provided in a second path P 2 so that a second IF multiple signal 74 and the reference signal 74 c are multiplied together in a mixer section 12 a. Consequently, by extracting the reference signal 74 c, the filter 171 in the second path P 2 operates as a local oscillation signal source synchronized with the second IF multiple signal 74 . Therefore, according to the signal obtained by down-conversion of the second IF multiple signal 74 with use of the reference signal 74 c in the mixer section 12 a, signals identical in quality to input signals inputted on the transmission side can be reproduced.
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