Title :
Multi-beam discrete lens arrays with amplitude-controlled steering
Author :
Romisch, S. ; Popovic, D. ; Shino, N. ; Lee, R. ; Popovic, Z.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
This paper presents a multi-beam antenna array with amplitude-controlled continuous beam steering of each beam. The principle is demonstrated on a Ka-band full-duplex dual-polarized array with an uplink frequency of 24.7GHz and a down-link frequency of 26.7GHz. The array is designed as a discrete lens, and the antenna elements are dual-frequency patches integrated in a 5-layer structure with delay lines that enable multiple beams. The array is spatially fed with a feed corresponding to each beam. Amplitude control at the feed results in continuous beam steering. Theoretical and experimental results for the multi-beam patterns and the beam steering are presented.
Keywords :
antenna feeds; antenna radiation patterns; beam steering; lens antennas; microstrip antenna arrays; multibeam antennas; 24.7 GHz; 26.7 GHz; Ka-band full-duplex dual-polarized array; amplitude-controlled continuous beam steering; antenna feed; delay line; dual-frequency patch; multi-beam discrete lens array; multilayer structure; radiation pattern; Antenna arrays; Antenna feeds; Antenna radiation patterns; Artificial satellites; Beam steering; Frequency; Lenses; Optical design; Phased arrays; Satellite antennas;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210459
