VARIABLE TRANSFORMER USING TRANSMISSION LINE TRANSFORMER

摘要

Disclosed is a variable transformer using a transmission line transformer. The variable transformer using the transmission line transformer according to one embodiment of the present invention includes: a transmission line transforming unit which is composed of a primary transmission line connected to a ground and a secondary transmission line which supplies a first source voltage and a second source voltage; a differential amplifying unit which outputs a phase inverted output signal by amplifying a difference between the first source voltage and the second source voltage; and a matching circuit which matches the phase inverted output signal from the differential amplifying unit and outputs the matched signal. A plurality of transistors receive different sizes of bias voltages at each gate terminal and are connected in parallel to the differential amplifying unit.