Influence of the channel–gate barrier height on the detection properties of a field-effect transistor in the microwave and terahertz ranges

The detection properties of a field-effect transistor with a low Schottky barrier gate in the microwave and terahertz ranges has been studied theoretically. Different detector circuits have been considered. The voltage and current distributions along the channel, the input impedance of the transistor, sensitivity, and noise equivalent power have been found. The influence of the Schottky barrier height on the above characteristics has been analyzed.