Dual polarization planar array antenna and cell elements therefor
First Claim
1. An RF antenna structure, comprising:
- at least one radiation cell having a conductive central enclosure and an upper probe and a lower probe located at different heights within the central enclosure,wherein the central enclosure between the upper probe and a bottom of the cell has at least two different cross-sectional areas,further comprising a conductive upper enclosure above the upper probe, andwherein the upper enclosure comprises a metal ridge partially overlapping the upper probe, but being smaller in area than the upper probe, serving as a single ridge waveguide structure.
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Accused Products
Abstract
An RF antenna structure (e.g., a planar array) includes at least one radiation cell (and typically many, e.g., 16 or 32 or 64, etc.) having a conductive enclosure and an upper probe and a lower probe located at different heights within the enclosure. The enclosure between the upper probe and a bottom of the cell has at least two different cross-sectional areas. The upper and lower probes are preferably oriented at substantially 90° relative to each other. An upper portion of the enclosure beneath the upper probe may have a larger dimension than a lower portion such that the upper portion allows propagation of waves generated by the upper probe in a predetermined frequency band while the lower portion (e.g., above the lower probe) does not substantially allow propagation of waves generated by the upper probe, in the predetermined frequency band.
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Citations
26 Claims
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1. An RF antenna structure, comprising:
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at least one radiation cell having a conductive central enclosure and an upper probe and a lower probe located at different heights within the central enclosure, wherein the central enclosure between the upper probe and a bottom of the cell has at least two different cross-sectional areas, further comprising a conductive upper enclosure above the upper probe, and wherein the upper enclosure comprises a metal ridge partially overlapping the upper probe, but being smaller in area than the upper probe, serving as a single ridge waveguide structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification