Minimized antenna apparatus with selectable elements
First Claim
1. An antenna apparatus, comprising:
- a substrate having a first side and a second side, wherein the second side of the substrate is substantially parallel to the first side of the substrate;
a plurality of active antenna elements on the first side of the substrate, each active antenna element configured to be selectively coupled to a radio frequency communication device; and
a ground component on the second side of the substrate, the ground component and a corresponding selectively coupled active antenna element from the plurality of active antenna elements collectively having one or more loading structures, wherein the one or more loading structures change the resonance of and allow the dimension of the ground component and the corresponding selectively coupled active antenna element to be reduced in comparison to a ground component and a selectively coupled active antenna element without corresponding loading structures.
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Accused Products
Abstract
A system and method for a wireless link to a remote receiver includes a communication device for generating RF and an antenna apparatus for transmitting the RF. The antenna apparatus comprises a plurality of substantially coplanar modified dipoles. Each modified dipole provides gain with respect to isotropic and a horizontally polarized directional radiation pattern. Further, each modified dipole has one or more loading structures configured to decrease the footprint (i.e., the physical dimension) of the modified dipole and minimize the size of the antenna apparatus. The modified dipoles may be electrically switched to result in various radiation patterns. With multiple of the plurality of modified dipoles active, the antenna apparatus may form an omnidirectional horizontally polarized radiation pattern. One or more directors may be included to concentrate the radiation pattern. The antenna apparatus may be conformally mounted to a housing containing the communication device and the antenna apparatus.
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Citations
20 Claims
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1. An antenna apparatus, comprising:
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a substrate having a first side and a second side, wherein the second side of the substrate is substantially parallel to the first side of the substrate; a plurality of active antenna elements on the first side of the substrate, each active antenna element configured to be selectively coupled to a radio frequency communication device; and a ground component on the second side of the substrate, the ground component and a corresponding selectively coupled active antenna element from the plurality of active antenna elements collectively having one or more loading structures, wherein the one or more loading structures change the resonance of and allow the dimension of the ground component and the corresponding selectively coupled active antenna element to be reduced in comparison to a ground component and a selectively coupled active antenna element without corresponding loading structures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An antenna element apparatus comprising:
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a plurality of substantially coplanar sets of selectively coupled antenna elements and ground component portions having one or more loading structures, wherein the one or more loading structures change the resonance of the substantially coplanar sets of selectively coupled antenna elements and ground component portions thereby allowing the dimension of the substantially coplanar sets to be reduced in comparison to a substantially coplanar set of a selectively coupled antenna element and a ground component portion without corresponding loading structures; and one or more directors configured to concentrate the radiation pattern of one or more of the substantially coplanar sets of selectively coupled antenna elements and ground component portions having one or more loading structures. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification