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Low-frequency noise measurements of high-Tc superconducting films: effect of DC capacitor in experimental setup

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3 Author(s)
S. Aslam ; MEI Technol., Seabrook, MD ; H. Jones ; B. Lakew

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-Tc 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.

Published in:

Electronics Letters  (Volume:43 ,  Issue: 23 )