3 results about "Noise temperature" patented technology

The present application relates to the technical field of testing, in particular to a noise figure test automatic calibration, compensation and correction method and system. The method comprises the following steps: obtaining the loss L of a microwave switch matrix; obtaining the equivalent noise temperature obtained by a test of a measured object and the test gain of the measured object; obtaining the real equivalent noise temperature of the measured object based on the loss L of the microwave switch matrix, the equivalent noise temperature obtained by the test of the measured object, the test gain of the measured object, a standard noise temperature; and converting the real equivalent noise temperature of the measured object into the real noise figure of the measured object. The present application can realize automatic calibration and compensation of noise figure test based on the Y-factor method, and support full-automatic testing of an automatic test system.

The application discloses a kind of methods for measuring antenna noise temperature, belong to antenna measurement technical field.The application includes: in antenna field installation antenna to be measured, utilize antenna servo controller to drive antenna points to clear sky, there is no shelter in front of antenna;The state parameter of spectrum analyzer is set, and the noise power density of system output is measured using the noise measurement function of spectrum analyzer;Directly calculate antenna noise temperature from the noise power density of system output measured.The measurement method of the application is simple and easy to operate, and has high popularization and application value.