| 摘要 |
A mixer includes a magnetoresistive effect element, a magnetic field applying unit, and an impedance circuit. The magnetoresistive effect element includes a fixed magnetic layer, a free magnetic layer, and a nonmagnetic spacer layer disposed between the fixed magnetic layer and the free magnetic layer, is operable when a first high-frequency signal and a second high-frequency signal as a local signal are inputted, to multiply the first high-frequency signal and the second high-frequency signal according to a magnetoresistive effect to generate a multiplication signal. The magnetic field applying unit applies a magnetic field to the free magnetic layer. The impedance circuit has a higher impedance for the multiplication signal than an impedance for the first high-frequency signal and the second high-frequency signal and is disposed between an input transfer line, which transfers the first high-frequency signal and the second high-frequency signal, and the magnetoresistive effect element.
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