NF测试方法3Maxim/Dallas > App Notes > BASESTATIONS / WIRELESS INFRASTRUCTURE WIRELESS, RF, AND CABLE Keywords: rf, rfic, wireless, noisefigure measurement, gain, meter, y factor, rf ics, rfics Nov 21, 2003 APPLICATION NOTE 2875 Three Methods of Noise Figure Measurement Three different methods to measure noise figure are presented: Gain method, Y-factor method, and the Noise Figure Meter method. The three approaches are compared in a table. Introduction In wireless communication systems, the "Noise Figure (NF)," or the related "Noise Factor (F)," defines the noise performance and contributes to the receiver sensitivity. This application note describes this important parameter and details ways to measure it. Noise Figure and Noise Factor Noise Figure (NF) is sometimes ieferred to as Noise Factor……