Title :
Grating Lobe Control in Dual-Feed Single-Beam Reflectarrays and Power Combiners
Author :
Almajali, E. ; McNamara, Derek A. ; Shaker, Jafar ; Chaharmir, M.R.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Univ. of Ottawa, Ottawa, ON, Canada
Abstract :
The reason for the presence of unwanted sidelobes in multifeed single-beam reflectarrays and power combiners is shown to be a grating lobe phenomenon due to “amplitude clustering” of the scattered field over the reflectarray aperture. A means of controlling the level of these lobes is proposed and validated using full-wave analysis and measurements.
Keywords :
power combiners; reflectarray antennas; amplitude clustering; dual feed single beam reflectarrays; full wave analysis; grating lobe control; multifeed single beam reflectarrays; power combiners; reflectarray aperture; scattered field; Antenna radiation patterns; Apertures; Feeds; Gratings; Power combiners; Reflector antennas; Amplitude clustering; dual-feed single-beam reflectarray; grating lobe suppression;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2283572
