Title :
Wide-angle beam steering using coupled-PLLs
Author_Institution :
Univ. of Massachusetts Amherst, Amherst
Abstract :
A coupled-PLLs network suitable for phased-array systems is presented. The proposed structure uses phase-frequency detectors, instead of analogue multipliers, to achieve up to plusmn180deg phase shift between output signals. This improvement makes it possible to extend the scanning angle from plusmn30deg off the normal achieved through current coupled-oscillators to plusmn90deg.
Keywords :
antenna phased arrays; beam steering; phase detectors; phase locked loops; coupled-PLL network; phase locked loop; phase-frequency detector; phased-array system; wide-angle beam steering;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20070600
