Title :
Feed radiation effects in sequentially rotated microstrip patch arrays
Author_Institution :
Royal Military College of Science, School of Electrical Engineering & Science, Swindon, UK
Abstract :
Feed radiation effects in microstrip patch arrays with coplanar feed networks result in increased sidelobe levels and reduced efficiency. A modified implementation of the sequential rotation feed principle is used to reduce feed radiation. Computed results confirmed by measurements show sidelobe reduction of up to 10dB. First-order estimates of efficiency improvement in large arrays are also given.
Keywords :
antenna feeders; antenna radiation patterns; microstrip antennas; microwave antenna arrays; 10 dB; coplanar feed networks; efficiency improvements; feed radiation effects; increased sidelobe levels; large arrays; reduce feed radiation; reduced efficiency; sequential rotation feed; sequentially rotated microstrip patch arrays; sidelobe reduction;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870620
