Multiple-antenna systems with enhanced isolation and directivity
First Claim
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1. A system comprising:
- a ground plane including a circular portion having a circumference and a center;
a plurality of antenna elements mounted to the ground plane along the circumference of the circular portion of the ground plane, the antenna elements equidistant from the center of the circular portion of the ground plane, the antenna elements spaced equally apart from each other such that a one hundred twenty degree(120°
) arc is defined between mounting points of two adjacent antenna elements and the center of the circular portion of the ground plane;
a first plurality of isolators/reflectors in a spoked configuration centered at the center of the circular portion of the ground plane, such that the isolators/reflectors are positioned about the center of the circular portion of the ground plane and extend outwardly in a direction away from the center of the circular portion of the ground plane; and
/ora second plurality of isolators/reflectors, each placed between a corresponding one of the antenna elements and the center of the circular portion of the ground plane;
wherein each of the first and the second pluralities of isolators/reflectors includes two vertical sections and a horizontal section that is generally parallel with the ground plane, and defining an inverted U-shaped configuration for each of the isolators/reflectors.
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Abstract
Exemplary embodiments are provided of multiple-antenna systems with enhanced and/or good isolation and directivity. In one exemplary embodiment, a system generally includes a ground plane and two or more antenna elements coupled to the ground plane. The system also includes two or more low frequency isolators/reflectors and two or more high frequency isolators/reflectors coupled to the ground plane.
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Citations
14 Claims
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1. A system comprising:
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a ground plane including a circular portion having a circumference and a center; a plurality of antenna elements mounted to the ground plane along the circumference of the circular portion of the ground plane, the antenna elements equidistant from the center of the circular portion of the ground plane, the antenna elements spaced equally apart from each other such that a one hundred twenty degree(120°
) arc is defined between mounting points of two adjacent antenna elements and the center of the circular portion of the ground plane;a first plurality of isolators/reflectors in a spoked configuration centered at the center of the circular portion of the ground plane, such that the isolators/reflectors are positioned about the center of the circular portion of the ground plane and extend outwardly in a direction away from the center of the circular portion of the ground plane; and
/ora second plurality of isolators/reflectors, each placed between a corresponding one of the antenna elements and the center of the circular portion of the ground plane; wherein each of the first and the second pluralities of isolators/reflectors includes two vertical sections and a horizontal section that is generally parallel with the ground plane, and defining an inverted U-shaped configuration for each of the isolators/reflectors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification