Mixer, High-Frequency transmitting/receiving apparatus having the same, radarapparatus having the high-frequency transmitting/receiving apparatus, and vehicle equipped with radar apparatus

Abstract

A mixer capable of keeping mixing characteristics tuned satisfactorily is provided. A coupler includes two input ends, and one or two output ends. At the output end is disposed a Schottky-barrier diode acting as a high-frequency detection element. Connected to the Schottky-barrier diode is a bias supply circuit having a trimmable chip resistor acting as a pre-set variable resistor, for controlling a bias current which passes through the Schottky-barrier diode. By adjusting the resistance of the trimmable chip resistor, it is possible to control a bias current passing through the Schottky-barrier diode, and thereby keep mixing characteristics tuned satisfactorily.

Dependencies are inferred from the claim text.