Title :
Monopulse comparator with frequency-independent delta-channel nulls for high-resolution tracking radar
Author :
Yang, Nan ; Caloz, C. ; Wu, Kaijie
Author_Institution :
Polytech. de Montreal, Montreal, QC, Canada
Abstract :
A novel super-broadband planar monopulse comparator is presented, and demonstrated experimentally. This comparator is based on a recently discovered 180° hybrid coupler derived from the conventional Wilkinson divider. Because of its symmetric configuration, the proposed comparator exhibits frequency-independent nulls at its three difference output ports and therefore features a quasi unlimited bandwidth. This property substantially enhances the overall broadband resolution performance of monopulse comparators with direct benefits in tracking radar applications.
Keywords :
comparators (circuits); network synthesis; radar resolution; radar tracking; Wilkinson divider; frequency-independent delta-channel null; high-resolution tracking radar; hybrid coupler; quasiunlimited bandwidth; super-broadband planar monopulse comparator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.3523