Distribution mixer

A distributed mixer, comprising:

• a first transmission line, wherein an input end of the first transmission line is connected to a local oscillator (LO) terminal for LO signal input, and wherein a terminal end of the first transmission line is connected to an radio frequency (RF) terminal for RF signal output;
• a second transmission line, wherein an input end of the second transmission line is connected to an intermediate frequency (IF) terminal for IF signal input;
• a plurality of transistors disposed between the first transmission line and the second transmission line, wherein the plurality of transistors is arrayed equidistantly in a direction of signal flow of the first transmission line and the second transmission line, wherein gates of the plurality of transistors are connected to the second transmission line, wherein drains of the plurality of transistors are connected to the first transmission line, and wherein sources of the plurality of transistors are grounded;
• a bias circuit that applies a bias voltage to a terminal end of the second transmission line;
• and
• a terminating resistor that connects the terminal end of the second transmission line to a ground, wherein the bias circuit applies the bias voltage so that a direct current voltage between a respective gate and a respective source of each of the plurality of transistors is a respective threshold voltage of a respective transistor of the plurality of transistors, wherein the direct current voltage between a respective drain and the respective source of each of the plurality of transistors is equal, and wherein the RF signal obtained by performing frequency conversion of the IF signal is output from the terminal end of the first transmission line.