Phase detection circuit functions over full 360 degrees covering all four quadrants, and gives linear output that is proportional to phase difference. In addition, its output has single polarity; thus it is compatible with logic circuitry without need for additional processing.
Four-quadrant phase detector
NASA Tech Briefs ; 2 , 4
1977-03-01
Miscellaneous
No indication
English
An Intelligent Tracking Algorithm Using Four-Quadrant Detector
British Library Online Contents | 2012
|Monolithic four-quadrant multiplier
NTRS | 1981
|Four-quadrant CCD analog multiplier
NTRS | 1981
|