Planar ray imaging steered beam array (PRISBA) antenna
First Claim
1. A ray-imaging, electronic beam-steering antenna comprising:
- a. at least one antenna segment, each said at least one antenna segment having at least one output and including a plurality of horizontally-polarized radiating column-array elements and an elevation beam-forming assembly, said plurality of radiating column-array elements disposed adjacently on a common line, and b. an electrically conductive ground reflector plane positioned perpendicular to said common line, said ground reflector plane allowing gain-enhanced, horizontal-polarization beam generation and steering in planes perpendicular to said ground reflector plane.
1 Assignment
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Accused Products
Abstract
A planar, ray-imaging, electronically steered array antenna, whose radiating array elements are disposed on a planar surface above an electrically conductive ground plane that enhances the antenna gain. The conductive ground plane forms an integral part of the antenna, and the required dimensions of this ground plane depend on the array height, and on the lowest elevation coverage angle from the (possibly tilted) ground plane. The antenna is further characterized by a modular design that tailors the required antenna gain and azimuthal directivity through the stacking of identical antenna segments side by side. The antenna can generate, with the aid of a multiple-beam microwave network or a two-ended series-feed network, a pair of symmetrically steered beams from an incident wavefront received by a linear (column) or planar array, in conjunction with reflections from a bottom metal plate. The coherent combination of the pair of symmetrically steered beams with the reflections allows an effective doubling of the antenna aperture in elevation.
17 Citations
34 Claims
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1. A ray-imaging, electronic beam-steering antenna comprising:
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a. at least one antenna segment, each said at least one antenna segment having at least one output and including a plurality of horizontally-polarized radiating column-array elements and an elevation beam-forming assembly, said plurality of radiating column-array elements disposed adjacently on a common line, and b. an electrically conductive ground reflector plane positioned perpendicular to said common line, said ground reflector plane allowing gain-enhanced, horizontal-polarization beam generation and steering in planes perpendicular to said ground reflector plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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12. A ray-imaging, electronic beam-steering antenna comprising:
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a. at least one antenna segment, each said at least one antenna segment having at least one output and including a plurality of vertically-polarized radiating column-array elements and an elevation beam-forming assembly, said plurality of radiating column-array elements disposed adjacently on a common line, and b. an electrically conductive ground reflector plane positioned perpendicular to said common line, said ground reflector plane allowing gain-enhanced, vertical-polarization beam generation and steering in planes perpendicular to said ground reflector plane.
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23. A ray-imaging, electronic beam-steering antenna comprising:
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a. at least one antenna segment, each said at least one antenna segment having at least one output and including a plurality of dual-polarized radiating column-array elements and an elevation beam-forming assembly, said plurality of radiating arc elements disposed adjacently on a common line, and b. an electrically conductive ground reflector plane positioned perpendicular to said common line, said ground reflector plane allowing, for any polarization, gain-enhanced, beam generation and steering in planes perpendicular to said ground reflector plane.
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Specification