Two Noise Parameter Measurement Methods Using Spectrum Analyzer and Comparison

스펙트럼 분석기를 이용한 2가지 잡음 파라미터 측정방법과 비교

  • Received : 2015.08.31
  • Accepted : 2015.09.21
  • Published : 2015.12.31


In this paper, we propose two noise parameter measurement methods using spectrum analyzer. First method, we measure a noise correlation matrix using the 6-port network, and we calculate noise parameters using measured a noise correlation matrix. Second method, we directly measure noise figures of the DUT for source impedance changes, and then noise parameters are extracted from the measured noise figures. In order to measure a noise figure, we present a method of measuring a noise figure of the DUT that have arbitrary source impedances using spectrum analyzer and a method of eliminating a noise effect of a impedance tuner. Finally, the noise parameters of a passive and active DUT using proposed two methods are compared. The comparison shows that the two results obtained from for the two methods give almost identical noise parameters. The noise parameters measured by 6-port network accurately predict measured noise figures of the DUT for source impedance changes, and noise parameters measured by 6-port network is verified from the comparison.


Spectrum Analyzer;6-Port Network;Noise Figure;Impedance Tuner


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Supported by : 충남대학교