Antenna system
First Claim
Patent Images
1. A device for improving antenna performance by combining space and angle diversity characteristics, the device comprising:
- an antenna array board having substantially identical independent first and second antenna elements, wherein the first and second antenna elements include first and second radiation lobes, respectively, and wherein the first and second antenna elements are positioned so that the first and second radiation lobes are directed towards diverse azimuth angles; and
substantially identical independent third and fourth antenna elements different from the first and second antenna elements, wherein the third and fourth antenna elements include third and fourth radiation lobes, respectively, and wherein the third and fourth antenna elements are positioned so that the third and fourth radiation lobes are directed towards diverse azimuth angles, wherein the first, second, third, and fourth antenna elements are disposed on a first side of the antenna board so that a line extending perpendicularly from the first side of the antenna array board will intersect no more than one antenna element; and
first, second, third, and fourth connectors positioned proximate to the first, second, third, and fourth antenna elements, respectively, for providing an independent signal path for each antenna element.
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Abstract
Provided is an antenna system for operating in clear line of sight and obscured line of sight conditions. The antenna system includes multiple antenna elements arranged to provide both space and angle diversity characteristics. The elements are spaced apart so as to provide independence but may have overlapping radiation patterns. Each element includes a main radiation lobe and the elements are arranged so that the main radiation lobes are oriented at diverse angles.
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Citations
20 Claims
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1. A device for improving antenna performance by combining space and angle diversity characteristics, the device comprising:
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an antenna array board having substantially identical independent first and second antenna elements, wherein the first and second antenna elements include first and second radiation lobes, respectively, and wherein the first and second antenna elements are positioned so that the first and second radiation lobes are directed towards diverse azimuth angles; and
substantially identical independent third and fourth antenna elements different from the first and second antenna elements, wherein the third and fourth antenna elements include third and fourth radiation lobes, respectively, and wherein the third and fourth antenna elements are positioned so that the third and fourth radiation lobes are directed towards diverse azimuth angles, wherein the first, second, third, and fourth antenna elements are disposed on a first side of the antenna board so that a line extending perpendicularly from the first side of the antenna array board will intersect no more than one antenna element; and
first, second, third, and fourth connectors positioned proximate to the first, second, third, and fourth antenna elements, respectively, for providing an independent signal path for each antenna element. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for providing an antenna operable to function in clear line of sight and obscured line of sight conditions by providing space and angle diversity characteristics, the method comprising:
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arranging a plurality of antenna elements relative to one another and a first side of a support surface, wherein each antenna element is independent and includes a radiation lobe, the arranging including;
organizing the antenna elements into first and second portions having an identical number and arrangement of antenna elements;
spacing the antenna elements apart so that any line extending perpendicularly from the first side of the support surface will intersect at most one antenna element; and
orienting the radiation lobes at diverse angles;
placing the arranged antenna elements on the support surface; and
fastening a plurality of connectors corresponding to the plurality of antenna elements to the support surface, wherein the connectors are in signal communication with the antenna elements. - View Dependent Claims (9, 10)
positioning the support surface at a predefined distance from a ground plane surface; and
securing the support surface to the ground plane surface.
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11. An antenna for overcoming deleterious effects of multipath, the antenna comprising
a single support member; - and
a plurality of antenna elements disposed on a first side of the support member, wherein the first side of the support member comprises first and second halves, wherein each half has an identical number of antenna elements disposed in an identical manner thereon, wherein each of the antenna elements includes a main radiation lobe, and wherein the antenna elements are arranged so that each antenna element is spaced from the other antenna elements and the main radiation lobes are oriented towards different angles, and wherein the antenna elements include a first pair of antenna elements having a first shape and a second pair of antenna elements having a second shape different than the first shape, wherein one antenna element of each of the first and second pairs is disposed in each half.
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12. An antenna having space and angle diversity comprising:
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a single support member having a first side divided into first and second portions; and
a plurality of independent antenna elements each having a main radiation lobe and arranged so that each antenna element is spaced from the other antenna elements, wherein the antenna elements include a first pair of antenna elements having a first shape and a second pair of antenna elements having a second shape different than the first shape, wherein one antenna element of each of the first and second pairs is located in each of the first and second portions. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A device for improving antenna performance by combining space and angle diversity characteristics, the device comprising:
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an antenna array board having substantially identical independent first and second antenna elements and substantially identical independent third and fourth antenna elements different from the first and second antenna elements, wherein the first and third antenna elements are positioned on a first portion of the antenna array board and the second and fourth antenna elements are positioned on a second portion of the antenna array board; and
first, second, third, and fourth connectors positioned proximate to the first, second, third, and fourth antenna elements, respectively, for providing an independent signal path for each antenna element.
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Specification