System and method for an omnidirectional planar antenna apparatus with selectable elements
First Claim
1. An antenna apparatus, comprising:
- a substrate having a first side and a second side substantially parallel to the first side;
a plurality of active antenna elements on the first side of the substrate, each active antenna element selectively coupled to a communication device and configured to form a first portion of a modified dipole having a directional radiation pattern with polarization substantially in the plane of the substrate; and
a ground component on the second side of the substrate, the ground component being asymmetrically configured on a planar axis, the ground component being further configured to form a second portion of the modified dipole.
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Abstract
A system and method for a wireless link to a remote receiver includes a communication device for generating RF and a planar antenna apparatus for transmitting the RF. The planar antenna apparatus includes selectable antenna elements, each of which has gain and a directional radiation pattern. The directional radiation pattern is substantially in the plane of the antenna apparatus. Switching different antenna elements results in a configurable radiation pattern. Alternatively, selecting all or substantially all elements results in an omnidirectional radiation pattern. One or more directors and/or one or more reflectors may be included to constrict the directional radiation pattern. The antenna apparatus may be conformally mounted to a housing containing the communication device and the antenna apparatus.
194 Citations
42 Claims
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1. An antenna apparatus, comprising:
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a substrate having a first side and a second side substantially parallel to the first side; a plurality of active antenna elements on the first side of the substrate, each active antenna element selectively coupled to a communication device and configured to form a first portion of a modified dipole having a directional radiation pattern with polarization substantially in the plane of the substrate; and a ground component on the second side of the substrate, the ground component being asymmetrically configured on a planar axis, the ground component being further configured to form a second portion of the modified dipole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An antenna apparatus, comprising:
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a plurality of individually selectable active planar antenna elements, each active antenna element having a directional radiation pattern with polarization substantially in the plane of the active antenna elements; a ground component which is asymmetrically configured on a planar axis; and an antenna element selecting device configured to communicate a radio frequency signal with a communication device and selectively couple one or more of the active antenna elements to the communication device. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. An antenna apparatus, comprising:
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a communication device for generating a radio frequency signal; a first means for generating a first directional radiation pattern; a second means for generating a second radiation pattern, the second radiation pattern being offset in direction from the first directional radiation pattern; a third means for grounding the system, the third means being configured in an asymmetrical pattern with respect to a planar axis of the third means; and a selecting means for receiving the radio frequency signal from the communication device and selectively coupling the first means and the second means to the communication device. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A method, comprising:
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generating a radio frequency signal in a communication device; and selectively coupling at least one of a plurality of active coplanar antenna elements to the communication device to result in a directional radiation pattern substantially in the plane of the active antenna elements, wherein at least one of the plurality of active coplanar antenna elements comprises a portion of a dipole, and selectively coupling the at least one of the plurality of active coplanar antenna elements comprises enabling the portion of the dipole to receive the radio frequency signal from the communication device and enabling a ground component to complete the dipole, the ground component being asymmetrically configured relative to a planar axis defined by the ground component. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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34. The method of clan 33, wherein the dipole comprises a bent dipole.
Specification