| 摘要 |
PURPOSE: To make it unnecessary to use an additional phase lock loop by supplying one oscillator signal from an oscillator to a second pair of mixing stages and another pair of mixing stages in a signal path. CONSTITUTION: A quadrature phase oscillator signal having a frequency value 2×f2 generated by a second oscillator 9 is supplied to first mixing inputs 15 and 26 of another pair of mixing stages 14 and 25, and a mirror symmetric frequency signal including two frequency components indicating the mirror symmetric value of a central frequency value f2 related with two frequency components in an output signal in a signal output 10 is generated in each mixing output 49 and 50. Also, a receiver 1 is provided with a frequency-divider 36 arranged between the second oscillator 9 and a second pair of mixing stages 6-1 and 6-2. Thus, it is possible to make it unnecessary to use an additional phase lock loop.
|
