High frequency double pole double throw switch

Abstract

A DPDT switch includes first and second output signal electrodes opposite each other in an active region on a semiconductor substrate, a third output signal electrode opposite the second output signal electrode in the same active region, and first and second input signal electrodes disposed respectively between the first and second output signal electrodes and between the second and third output signal electrodes, and first control signal electrodes respectively disposed between the first input signal electrode and the first output signal electrode and between the second input signal electrode and the second output signal electrode for switching a signal between the input and output signal electrodes, and second control signal electrodes respectively disposed between the first input signal electrode and the second output signal electrode and between the second input signal electrode and the third output signal electrode for switching an input signal from the first and second input signal electrodes to the second and third output signal electrodes. The DPDT switch including an FET switch in the single active region enables a large reduction in the area of a switching circuit and miniaturization of the device to a large extent.