Title :
Multiple beam forming for planar antenna arrays using a three-dimensional rotman lens
Author :
Sole, G.C. ; Smith, M.S.
Author_Institution :
University College London, Department of Electronic and Electrical Engineering, London, UK
fDate :
8/1/1987 12:00:00 AM
Abstract :
Design equations are presented for three-dimensional (volumetric) multiple-beamforming lenses for planar arrays. The minimum lens size for given array dimensions is derived. Theoretical multiple-beam patterns are predicted for a particular lens configuration, using flared waveguide ports, feeding a 37-element planar array. This lens has been constructed and tested, operating over the frequency band 8¿¿12 GHz, and the results show good agreement with theory in most respects. Mutual coupling between lens ports has a significant influence on the lens insertion loss.
Keywords :
antenna feeders; lenses; microwave antenna arrays; 8 to 12 GHz; flared waveguide ports; frequency operation band; lens insertion loss; lens ports; minimum lens size; multiple-beam forming lenses; multiple-beam patterns; mutual coupling; planar antenna arrays; three-dimensional Rotman lens;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings H
DOI :
10.1049/ip-h-2.1987.0073
