Terahertz Detector Based on T-Channel JLFET with Improved Antenna Coupling Circuit

Abstract

Junctionless Field Effect Transistor (JLFET) based terahertz detectors are the novel type of devices with favorable characteristics such as high zero bias responsivity. However, until now, their performance was lower than other types of silicon FET detectors. One of the most important factors for detector performance is an energy coupling efficiency. The antenna coupling circuit comprising capacitive gate feeding and inductive loop provides improved matching and reduced losses resulting in enhanced performance of the JLFET terahertz detector. In conjunction with a transistor architecture containing a T-shaped channel, it ensures the competitive performance of the detector.