Title :
A precise 360°-range phase detector for fdNIRS application using a pair of XNORs
Author :
Siavash S. Yazdi;Albert E. Cerussi;Michael M. Green
Author_Institution :
Department of EECS, University of California, Irvine, 92697-2625, USA
Abstract :
A novel circuit for precise phase detection between two signals with the same frequency is presented. It is shown how the non-idealities in conventional phase detectors give rise to nonlinearities in the average voltage vs. phase characteristic. The proposed circuit makes use of a pair of XNOR-type phase detectors, to which signal and quadrature reference clocks are applied. A decision circuit then selects which of the two XNORs is used for the output, which guarantees that the circuit will be well within its linear region.
Keywords :
"Clocks","Biomedical measurement","Radio frequency","Oscillators","Digital signal processing","Transistors","CMOS integrated circuits"
Conference_Titel :
Circuits and Systems (MWSCAS), 2015 IEEE 58th International Midwest Symposium on
DOI :
10.1109/MWSCAS.2015.7282161
