Title :
A Folded Reflectarray Antenna for 2D Scanning
Author :
Menzel, Wolfgang ; Kessler, Dominik
Author_Institution :
Inst. of Microwave Tech., Univ. of Ulm, Ulm
Abstract :
A folded reflectarray antenna is presented which is able to scan its beam in two dimensions. The antenna is based on the bifocal approach with phase angle adjustments on a top and on a bottom reflector. Seven feeds are used to switch between different beams in one plane, and the backside reflector is tilted to scan in the orthogonal direction. For good performance, top and bottom reflector are designed is a special way. A sample antenna has been built and tested at 77 GHz.
Keywords :
antenna arrays; scanning antennas; automotive radar; beam; folded reflectarray antenna; mechanical scanning; phase angle adjustments; Antenna arrays; Antenna feeds; Automotive engineering; Microwave antennas; Phased arrays; Polarization; Radar antennas; Radar detection; Reflector antennas; Switches; automotive radar; mechanical scanning; reflectarray; scanning antenna;
Conference_Titel :
Microwave Conference, 2009 German
Conference_Location :
Munich
Print_ISBN :
978-3-9812668-0-1
Electronic_ISBN :
978-3-8007-3150-3
DOI :
10.1109/GEMIC.2009.4815898
