Low-frequency noise measurements of high-Tc superconducting films: effect of DC capacitor in experimental setup
ELECTRONICS LETTERS(2007)
摘要
Often a transformer is used with a DC-blocking capacitor as a voltage gain stage in experimental setups that measure low-frequency noise in high-T-c superconducting films. Presented is a system response analysis to show that the value of the DC-blocking capacitor determines the validity of the lower frequency limit of the measured noise voltage spectral density data.
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关键词
noise measurement,high temperature superconductors,capacitors,low frequency noise
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