Title :
3-D constrained lens beamformer for planar arrays
Author :
Mason, A.G. ; Parini, C.G.
Author_Institution :
Dept. of Electr. & Electron. Eng., Queen Mary & Westfield Coll., London, UK
Abstract :
A 3-D constrained lens beamformer is described which is suitable for feeding a planar array antenna in which the elements are arranged upon a triangular lattice within a circular aperture. The lens can produce nine simultaneous beams from a 37-element planar array, covering an angular range of ±30° in both planes. Pyramidal horns are used for the lens beam ports and array ports. The lens design procedure makes the following approximations: the beam port horn cluster and the array port horn cluster are assumed to be in the far-fields of each other; and the mutual coupling between horns on each cluster is neglected
Keywords :
antenna feeders; lens antennas; microwave antenna arrays; 3D constrained lens beamformer; X-band; angular range; antenna feeders; array ports; circular aperture; far-fields; geometrical optics; lens beam ports; lens design; mutual coupling; planar array antenna; pyramidal horns; triangular lattice;
Conference_Titel :
Multiple Beam Antennas and Beamformers, IEE Colloquium on
Conference_Location :
London
