Correlator‐Amplifier for Very Low Level Signals
作者:
James J. Brophy,
Max Epstein,
Samuel L. Webb,
期刊:
Review of Scientific Instruments
(AIP Available online 1965)
卷期:
Volume 36,
issue 12
页码: 1803-1806
ISSN:0034-6748
年代: 1965
DOI:10.1063/1.1719469
出版商: AIP
数据来源: AIP
摘要:
A correlator‐amplifier system based on a Hall multiplier improves the sensitivity of low level amplifiers by two to three orders of magnitude. The system is assembled largely from commercial instruments, with the exception of the Hall element itself. Over the frequency interval from 10 cps to 10 kc, the equivalent input noise level ranges from 5×10−15to 10−19V2/cycle. The system is capable of detecting correlated signals presented to both inputs in the presence of uncorrelated noise two to three orders of magnitude greater.
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