DocumentCode
2367347
Title
A novel differential synchronous demodulator for AC signals
Author
Pallás-Areny, Ramón ; Casas, Óscar
fYear
1995
fDate
24-26 April 1995
Firstpage
49
Abstract
We describe a new analog differential synchronous demodulator for AC signals where: (i) the signal is synchronously demodulated using the floating capacitor technique after being amplified, if necessary, by a low-gain AC amplifier with differential input and differential output, thus yielding a very high CMRR; and (ii) the differential-to-single ended signal conversion is performed after demodulation, that is, on a low-frequency signal that can be amplified by low-cost, high-performance circuits. We prevent the possible signal-to-noise ratio degradation because of synchronous sampling by using bandpass differential filters
Keywords
Band pass filters; Capacitors; Circuits; Demodulation; Detectors; Differential amplifiers; Frequency; Low pass filters; Sampling methods; Signal to noise ratio;
fLanguage
English
Publisher
ieee
Conference_Titel
Instrumentation and Measurement Technology Conference, 1995. IMTC/95. Proceedings. Integrating Intelligent Instrumentation and Control., IEEE
Conference_Location
Waltham, MA, USA
Print_ISBN
0-7803-2615-6
Type
conf
DOI
10.1109/IMTC.1995.515101
Filename
515101
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