Title :
Oversampling applied to single tone detection
Author :
O´Leary, Patrick
Author_Institution :
Joanneum Res., Graz, Austria
Abstract :
A new single tone detection circuit is presented. A sigma delta modulator is used to convert the analogue input signal to a one bit data stream. This data stream is then correlated with the quadrature components of the frequency which is to be detected. Direct signal synthesis is used to generate the quadrature components required in the correlation process.
Keywords :
correlators; delta modulation; detector circuits; digital circuits; discriminators; signal detection; signal processing equipment; correlation process; digital circuits; direct digital synthesis; frequency discrimination; one bit data stream; oversampling; quadrature components; sigma delta modulator; single tone detection circuit;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910049
