Title :
Improving the sidelobes of arrays fed by multiple-beam beam formers
Author :
Wiebach, Wolfgang ; Rausch, Ekkehart O.
Author_Institution :
Army Res. Lab., Adelphi, MD, USA
Abstract :
The sidelobe level of an array antenna fed by a Rotman lens can be reduced if pairs of adjacent beam ports are combined, and the system is fed through these summing ports. This procedure does not reduce the overall antenna gain. The conditions for this operational mode are explained, and the results are given
Keywords :
antenna feeds; antenna radiation patterns; lens antennas; multibeam antennas; waveguide antenna arrays; antenna gain; array sidelobes improvement; beam ports; linear antenna array; multiple-beam beam formers; operational mode; summing ports; waveguide Rotman lens; Antenna arrays; Antenna radiation patterns; Directive antennas; Frequency; Lenses; Linear antenna arrays; Optical design; Phased arrays; Receiving antennas; Switches;
Conference_Titel :
Radar Conference, 1998. RADARCON 98. Proceedings of the 1998 IEEE
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-4492-8
DOI :
10.1109/NRC.1998.678020
