Abstract
The design of a rectangular lattice with identical row and column boards of Rotman lenses to feed a hexagonal array of radiating elements is described in this paper. The resultant beams with high directivity and good isolation are arranged in a hexagonal lattice that is rotated 90/spl deg/ from the element lattice. A prototype network was built to excite a hexagonal array of conical horns. The measured patterns of the planar array as well as the characteristics of the individual boards agree very well with predictions.
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