Importance

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Abstract

A microwave mixing circuitry has a plurality of microwave signal input terminals, a local oscillator for outputting a local oscillation signal for the purpose of generating an intermediate frequency signal from the microwave signal input by the microwave signal input terminals, and a plurality of field effect transistors ('FET') for frequency converting. The FET gates are input with the microwave signal input from microwave signal input terminals. The FET drains are input with an output of the local oscillator. A plurality of gate voltage control circuitries control gate voltages of the FETs thereby causing one of the FETs to perform nonlinear operation while turning off another of FETs at the same time. An intermediate frequency signal output terminal outputs the intermediate frequency signal produced by the nonlinear operation of one of the FETs.

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First Claim