Title :
Scanning and Defocusing Characteristics of Microstrip Reflectarrays
Author :
Rengarajan, Sembiam R.
Author_Institution :
California State Univ., Northridge, CA, USA
fDate :
7/2/1905 12:00:00 AM
Abstract :
Results of an investigation on beam scanning by lateral displacement of the feed of a microstrip reflectarray are presented. Radiation pattern characteristics such as gain loss and sidelobe level degradation as a function of scan angle are discussed for different reflectarray geometries. Scanning of reflectarrays is limited to a few beamwidths, and their radiation pattern performance is found to be poorer than that of a comparable parabolic reflector antenna.
Keywords :
antenna radiation patterns; array signal processing; microstrip antenna arrays; reflector antenna feeds; beam scanning; defocusing characteristics; microstrip reflectarray feed; parabolic reflector antenna; radiation pattern characteristics; reflectarray geometries; Beam scanning; defocusing; feed displacement; method of moments; microstrip patch array; reflectarray;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2010.2045217
