Patent ID: 7002396

Claim:
A frequency converter comprising: a transistor pair having a first transistor and a second transistor respectively having first terminals commonly connected to each other as a first common terminal and second terminals commonly connected to each other as a second common terminal, the commonly-connected first terminals being connected to a power supply terminal by way of a first passive element; a third transistor having a first terminal connected to said power supply terminal by way of a second passive element, and a second terminal connected to the commonly-connected second terminals of said first and second transistors of said transistor pair; a third passive element having an end connected to the second common terminal of said transistor pair, and another end directly or indirectly grounded; and an output terminal connected to the first common terminal of said transistor pair, a first signal being applied to a third terminal of said first transistor, a second signal having a phase opposite to that of the first signal being applied to a third terminal of said second transistor, a third signal being applied to the second common terminal of said transistor pair, and a reference signal being applied to a third terminal of said third transistor.