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Noise-figure meter : ウィキペディア英語版 | Noise-figure meter A noise figure meter is an instrument for measuring the noise figure of an amplifier, mixer, or similar device. An example instrument is the 1983-era Agilent 8970A. == Measurement methods ==
: ''Describe automated Y-factor noise measurement'' A gated broadband noise source (such as an avalanche diode) drives the device under test. A measurement is made with the noise source on; another measurement with the noise source off. From those measurements and the characteristics of the noise source, the noise figure can be calculated.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Noise-figure meter」の詳細全文を読む
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