Title :
New phase-sensitive rectifier circuit
Author :
Carter, Stephen F. ; Faulkner, E.A.
Author_Institution :
University of Reading, J.J. Thomson Laboratory, Reading, UK
Abstract :
The principle of operation of a recent phase-sensitive rectifier demodulator circuit is discussed. The incorporation of this in a commercial lock-in amplifier has allowed the recovery of signals 70 dB below the noise level, while giving an output stability of better than 0·02% full scale per degree kelvin.
Keywords :
demodulators; rectifying circuits; demodulator; lock in amplifier; output stability; phase sensitive rectifier circuit;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19770318
