Suppression of mutual coupling in an array of planar antenna elements
First Claim
1. In an array comprising a plurality of planar antenna elements, a method for reducing mutual coupling among adjacent elements, comprising:
- positioning said elements adjacent to one another in a phased array configuration;
providing a circumferential conductor exclusively around each individual one of said elements in a plane common to each said element and spaced from said elements at an outer perimeter thereof so that at least a portion of said circumferential conductor for each said element is common to a circumferential conductor of an adjacent one of said elements; and
connecting said circumferential conductor to a ground potential.
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Accused Products
Abstract
The invention concerns a method and apparatus for reducing mutual coupling among adjacent planar antenna radiating elements in an array. The elements can be positioned adjacent to one another in a standard geometric array configuration. A circumferential conductive metal line is provided in the plane of each element at an outer perimeter thereof. The conductive metal line is electrically connected to a ground potential. The ground plane potential is preferably provided by a ground plane reflector over which the antenna elements are suspended. The conductive metal line can be connected to the ground plane reflector by one or more ground posts extending between the conductive metal line and the ground plane reflector.
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Citations
22 Claims
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1. In an array comprising a plurality of planar antenna elements, a method for reducing mutual coupling among adjacent elements, comprising:
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positioning said elements adjacent to one another in a phased array configuration;
providing a circumferential conductor exclusively around each individual one of said elements in a plane common to each said element and spaced from said elements at an outer perimeter thereof so that at least a portion of said circumferential conductor for each said element is common to a circumferential conductor of an adjacent one of said elements; and
connecting said circumferential conductor to a ground potential. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A phased antenna array having reduced coupling among a plurality of antenna elements, comprising:
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a plurality of planar antenna elements adjacent to one another in an array configuration;
a circumferential conductor exclusively around each individual one of said elements in a plane common to each said element and spaced from said elements at an outer perimeter thereof, said circumferential conductor connected to a ground potential and wherein at least a portion of said circumferential conductor for each said element is common to a circumferential conductor of an adjacent one of said elements. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An antenna element for providing reduced coupling to a plurality of adjacent antenna elements in a phased array, comprising:
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a dielectric layer;
a radiating element formed on said dielectric layer;
a circumferential conductor exclusively around each individual one of said radiating elements in a plane common to each said radiating element and spaced from said radiating element to form an outer perimeter thereof, said circumferential conductor connected to a ground potential and wherein at least a portion of said circumferential conductor for said element is common to a circumferential conductor of an adjacent one of said radiating elements. - View Dependent Claims (16, 17, 18)
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19. A scannable array comprising:
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a plurality of planar radiating elements adjacent to one another in a phased array configuration;
a plurality of feed points connected to said radiating elements;
controller means for controlling at least one of a phase and amplitude of RF applied to said radiating elements at said feed points;
a circumferential conductor exclusively around each individual one of said elements in a plane common to each said element and spaced from each said element at an outer perimeter thereof, said circumferential conductor connected to a ground potential and wherein at least a portion of said circumferential conductor for each said radiating element is common to a circumferential conductor of an adjacent one of said radiating elements. - View Dependent Claims (20, 21, 22)
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Specification