Wideband planar reconfigurable polarization antenna array
First Claim
1. A system comprising:
- at least a two-by-two array of linearly polarized antenna elements, wherein each antenna element has an orthogonal feed orientation with respect to its adjacent antenna elements, wherein each antenna element in the array is equally and progressively rotated in orientation with respect to its adjacent antenna elements;
a first array feed line connected to a first pair of elements in the array, wherein a first sub-feed line connected to the first array feed line is connected to a first element of the first pair of elements and a second sub-feed line connected to the first array feed line is connected to a second element of the first pair of elements, wherein the first and second elements of the first pair of elements have orthogonal feed orientations;
a second array feed line connected to a second pair of elements in the array, wherein the second array feed line is not combined with the first array feed line, wherein a first sub-feed line connected to the second array feed line is connected to a first element of the second pair of elements and a second sub-feed line connected to the second array feed line is connected to a second element of the second pair of elements, wherein the first and second elements of the second pair of elements have orthogonal feed orientations, wherein the first and second sub-feed lines connected to the first array feed line and the first and second sub-feed lines connected to the second array feed line each generate a corresponding equal and progressive phase delay within the array.
1 Assignment
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Accused Products
Abstract
An antenna array includes a plurality of sub-arrays each having a plurality of linearly polarized antenna elements, with each antenna element having an orthogonal feed orientation with respect to its adjacent antenna elements, and at least two feed lines each connected by at least one sub-feed line to at least two antenna elements having orthogonal feed orientations such that each antenna element is equally and progressively phase rotated. The antenna elements in at least two separate lines of the array, such as array rows or columns, are connected to a separate feed line. The antenna elements may be aperture coupled microstrip patch elements having a single slot fed by one of the sub-feed lines or cross-slot elements fed by two sub-feed lines. The sub-feed lines in a separate row or column are power combined into either one or two feed lines and may be connected to a beamformer.
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Citations
19 Claims
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1. A system comprising:
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at least a two-by-two array of linearly polarized antenna elements, wherein each antenna element has an orthogonal feed orientation with respect to its adjacent antenna elements, wherein each antenna element in the array is equally and progressively rotated in orientation with respect to its adjacent antenna elements; a first array feed line connected to a first pair of elements in the array, wherein a first sub-feed line connected to the first array feed line is connected to a first element of the first pair of elements and a second sub-feed line connected to the first array feed line is connected to a second element of the first pair of elements, wherein the first and second elements of the first pair of elements have orthogonal feed orientations; a second array feed line connected to a second pair of elements in the array, wherein the second array feed line is not combined with the first array feed line, wherein a first sub-feed line connected to the second array feed line is connected to a first element of the second pair of elements and a second sub-feed line connected to the second array feed line is connected to a second element of the second pair of elements, wherein the first and second elements of the second pair of elements have orthogonal feed orientations, wherein the first and second sub-feed lines connected to the first array feed line and the first and second sub-feed lines connected to the second array feed line each generate a corresponding equal and progressive phase delay within the array. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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an array comprising a first sub-array and a second sub-array, each sub-array comprising at least a two-by-two array of linearly polarized antenna elements, wherein each antenna element in the sub-array has an orthogonal feed orientation with respect to its adjacent antenna elements and is equally and progressively rotated in orientation with respect to its adjacent antenna elements, a first sub-array feed line connected to a first pair of elements in the sub-array, wherein a first sub-feed line connected to the first sub-array feed line is connected to a first element of the first pair of elements and a second sub-feed line connected to the first sub-array feed line is connected to a second element of the first pair of elements, wherein the first and second elements of the first pair of elements have orthogonal feed orientations, and a second sub-array feed line connected to a second pair of elements in the sub-array, wherein the second sub-array feed line is not combined with the first sub-array feed line, wherein a first sub-feed line connected to the second sub-array feed line is connected to a first element of the second pair of elements and a second sub-feed line connected to the second sub-array feed line is connected to a second element of the second pair of elements, wherein the first and second elements of the second pair of elements have orthogonal feed orientations, wherein the first and second sub-feed lines connected to the first sub-array feed line and the first and second sub-feed lines connected to the second sub-array feed line each generate a corresponding equal and progressive phase delay within their respective sub-array, wherein the first pair of elements in the first sub-array and the first pair of elements in the second sub-array form a first linear array in the array, wherein the first sub-array feed line of the first sub-array is combined with the first sub-array feed line of the second sub-array and fed by a first feed line of the array, wherein the second pair of elements in the first sub-array and the second pair of elements in the second sub-array form a second linear array in the array, wherein the second sub-array feed line of the first sub-array is combined with the second sub-array feed line of the second sub-array and fed by a second feed line of the array, wherein the first feed line of the array is not combined with the second feed line of the array. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification