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Signal to noise enhancement of lock‐in amplifiers

 

作者: K. Neelakantan,   S. Dattagupta,   K. P. Rajappan,  

 

期刊: Review of Scientific Instruments  （AIP Available online 1980）
卷期: Volume 51, issue 2  

页码: 251-252

 

ISSN:0034-6748

 

年代: 1980

 

DOI:10.1063/1.1136167

 

出版商: AIP

 

数据来源: AIP

 

摘要:

A lock‐in amplifier can be considered to be a special case of the more general box‐car averager. Expressions for the output noise voltage of lock‐in amplifiers are deduced from the corresponding results derived earlier for box‐car averagers. Deviations from the simple (4RC)1/2law are shown to exist in the case of nonwhite noise.

 

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