| 摘要 |
PROBLEM TO BE SOLVED: To provide an image rejection mixer capable of achieving a high image rejection rate over a wide frequency range.SOLUTION: A first mixer 101, a first filter 102, and a first variable gain amplifier 103 are inserted into a first path. A second mixer 105, a second filter 106, a phase shifter 107, and a second variable gain amplifier 108 are inserted into a second path. A local signal of the first mixer 101 is given from a signal source 110, and a local signal of the second mixer 105 is given from a second signal source 111. A control unit 113 controls the phase difference between the first signal source 110 and the second signal source 111, and controls the gains of the first variable gain amplifier 103 and the second variable gain amplifier 108. |
