Automated measuring device for microwave frequency terminals on the basis of logarithmic amplifier

This article describes application of logarithmic amplifier, which can be used to design the device for measuring the complex reflection coefficient (CRC) of the microwave range terminals. The methods for measuring the complex reflection coefficient by the sensor, parameters of which are specified during the calibration, are considered here. The sources of measurement uncertainty are analyzed. The methods for estimating errors of the developed device are presented.