Circularly-polarized antenna
First Claim
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1. A circularly-polarized antenna, comprising:
- a conductive backplane including a plurality of vertical, planar, rectangular panels forming a right prism;
a vertical array of equally-sized, planar patch radiators, disposed on one of the backplane panels and having a radiator spacing of one wavelength, each radiator having a face and four edges, each edge having a length of approximately one half wavelength;
a feed stripline, disposed on the backplane panel, having an input coupled to a coaxial feed cable, and a pair of outputs, orthogonal in position and phase, coupled to each of the radiators;
a second vertical array of equally-sized, planar patch radiators, disposed on one of the backplane panels and having a radiator spacing of one wavelength, each radiator having a face and four edges, each edge having a length of approximately one half wavelength;
a second feed stripline, disposed on the backplane panel, having an input coupled to a coaxial feed cable, and a pair of outputs, orthogonal in position and phase, coupled to each of the radiators; and
a power splitter including a single input and a plurality of outputs, each coupled to an input of the feed striplines,wherein the power splitter provides an unequal power distribution to the feed striplines.
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Abstract
A circularly-polarized antenna is provided, and includes a conductive backplane with a plurality of panels, a vertical array of patch radiators disposed on one of the backplane panels, and a feed stripline disposed on the backplane panel. The backplane panels are vertical, planar, rectangular and form a right prism. The vertical array has a radiator spacing of one wavelength, each radiator has a face and four edges, and each edge has a length of approximately one half wavelength. The feed stripline includes an input coupled to a coaxial feed cable, and a pair of outputs, orthogonal in position and phase, coupled to each of the radiators.
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11 Claims
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1. A circularly-polarized antenna, comprising:
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a conductive backplane including a plurality of vertical, planar, rectangular panels forming a right prism; a vertical array of equally-sized, planar patch radiators, disposed on one of the backplane panels and having a radiator spacing of one wavelength, each radiator having a face and four edges, each edge having a length of approximately one half wavelength; a feed stripline, disposed on the backplane panel, having an input coupled to a coaxial feed cable, and a pair of outputs, orthogonal in position and phase, coupled to each of the radiators; a second vertical array of equally-sized, planar patch radiators, disposed on one of the backplane panels and having a radiator spacing of one wavelength, each radiator having a face and four edges, each edge having a length of approximately one half wavelength; a second feed stripline, disposed on the backplane panel, having an input coupled to a coaxial feed cable, and a pair of outputs, orthogonal in position and phase, coupled to each of the radiators; and a power splitter including a single input and a plurality of outputs, each coupled to an input of the feed striplines, wherein the power splitter provides an unequal power distribution to the feed striplines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification