Calibratable microwave circuit with illuminable GaAs FET,calibrating device and process

摘要

An electronic microwave circuit a gallium arsenide (GaAs) FETs (15) which are integrated on a semiconductor substrate (5) for switching electrical input HF signals (16) and at least one light source (2) for illuminating the GaAs FETs. The light intensity of the light source (2) and/or the color of the light source (2) are variable during operation. Independent claims are included for the following: (A) A calibration device for calibrating the light intensity and/or color. (B) A method for operating a calibration device.