Ultrawideband nested bowtie array
First Claim
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1. A phased array comprising:
- a high-band sub-array including a plurality of electrically coupled high-band radiating elements formed on a substrate, a high-band ground plane spaced from the substrate, at least one high-band dielectric layer provided between the substrate and the high-band ground plane, and at least one dielectric layer provided on the substrate opposite to the high-band ground plane;
a mid-band sub-array surrounding the high-band sub-array, said mid-band sub-array including a plurality of electrically coupled mid-band radiating elements formed on the substrate, a mid-band ground plane spaced from the substrate, at least one dielectric layer provided between the mid-band ground plane and the substrate, and at least one dielectric layer provided on the substrate opposite to the mid-band ground plane; and
a low-band sub-array surrounding the mid-band sub-array, said low-band sub-array including a plurality of electrically coupled low-band radiating elements formed on the substrate, a low-band ground plane spaced from the substrate, at least one dielectric layer provided between the substrate and the low-band ground plane, and at least one dielectric layer provided on the substrate opposite to the low-band ground plane.
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Abstract
A wideband phased array including a plurality of nested sub-arrays each having a plurality of bowtie radiators and having a common aperture, where each sub-array covers a different frequency band. In one embodiment, a square high-band sub-array is positioned at a center of the phase array, a square mid-band sub-array surrounds the high-band sub-array, and low-band sub-array surrounds the mid-band sub-array.
24 Citations
18 Claims
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1. A phased array comprising:
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a high-band sub-array including a plurality of electrically coupled high-band radiating elements formed on a substrate, a high-band ground plane spaced from the substrate, at least one high-band dielectric layer provided between the substrate and the high-band ground plane, and at least one dielectric layer provided on the substrate opposite to the high-band ground plane; a mid-band sub-array surrounding the high-band sub-array, said mid-band sub-array including a plurality of electrically coupled mid-band radiating elements formed on the substrate, a mid-band ground plane spaced from the substrate, at least one dielectric layer provided between the mid-band ground plane and the substrate, and at least one dielectric layer provided on the substrate opposite to the mid-band ground plane; and a low-band sub-array surrounding the mid-band sub-array, said low-band sub-array including a plurality of electrically coupled low-band radiating elements formed on the substrate, a low-band ground plane spaced from the substrate, at least one dielectric layer provided between the substrate and the low-band ground plane, and at least one dielectric layer provided on the substrate opposite to the low-band ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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- 12. A phased array comprising a plurality of nested sub-arrays where the sub-arrays are nested in that at least one inner sub-array is surrounded by at least one outer sub-array, and where each sub-array includes a plurality of bowtie radiators each being defined by opposing triangular-shaped radiating portions and where each bowtie radiator in each sub-array has a same size, each bowtie radiator in one sub-array has a different size than the bowtie radiators in the other sub-arrays and each sub-array operates at a different frequency band than the other sub-arrays, and where the plurality of nested sub-arrays have a common aperture, wherein the plurality of bowtie radiators are defined by a configuration of a plurality of square radiating elements, and wherein each square radiating element is formed by two of the triangularly-shaped radiating portions, and wherein electrically coupled triangularly-shaped radiating portions of adjacent radiating elements define a single bowtie radiator, and where each bowtie radiator is fed at a point where the two radiating portions contact each other, wherein some adjacent radiating elements in one of the sub-arrays are electrically coupled to radiating elements in an adjacent sub-array.
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16. A phased array comprising:
- a square high-band sub-array including a plurality of electrically coupled square high-band radiating elements formed on a substrate, a high-band ground plane spaced from the substrate, at least one high-band dielectric layer provided between the substrate and, the high-band ground plane, and at least one dielectric layer provided on the substrate opposite to the high-band ground plane;
a square mid-band sub-array surrounding the high-band sub-array, said mid-band sub-array including a plurality of electrically coupled square mid-band radiating elements formed on the substrate, a mid-band ground plane spaced from the substrate, at least one dielectric layer provided between the mid-band ground plane and the substrate, and at least one dielectric layer provided on the substrate opposite to the mid-band ground plane; and
a square low-band sub-array surrounding the mid-band sub-array, said low-band sub-array including a plurality of electrically coupled square low-band radiating elements formed on the substrate, a low-band ground plane spaced from the substrate, at least one dielectric layer provided between the substrate and the low-band ground plane, and at least one dielectric layer provided on the substrate opposite to the low-band ground plane, wherein the high-band sub-array, the mid-band sub-array and the low-band sub-array have a common aperture, and wherein adjacent square radiating elements are electrically coupled at element points in each sub-array, and wherein each square radiating element, includes two triangularly-shaped radiating portions, and wherein electrically coupled radiating portions of adjacent radiating elements define a bowtie radiator, and electrically coupled radiating elements are fed at locations where the points contact each other. - View Dependent Claims (17, 18)
- a square high-band sub-array including a plurality of electrically coupled square high-band radiating elements formed on a substrate, a high-band ground plane spaced from the substrate, at least one high-band dielectric layer provided between the substrate and, the high-band ground plane, and at least one dielectric layer provided on the substrate opposite to the high-band ground plane;
Specification