Some Common Methods of Measuring Noise Figure of Receiver

This thesis mainly introduced the common measurement methods of noise coefficient of frequency conversion receiver, Y coefficient method (cold and heat source method) and vector network analyzer method (cold source method). The measuring principle of Y coefficient method is expounded in detail, the method and steps of measuring noise coefficient by using noise generator are described, the principle and method of using vector network analyzer to measure noise coefficient is introduced. Finally, the measurement errors and applicable situations of various measuring methods are analyzed.