COMMUNICATIONS STRUCTURES INCLUDING ANTENNAS WITH FILTERS BETWEEN ANTENNA ELEMENTS AND GROUND SHEETS
First Claim
Patent Images
1. A communications structure comprising:
- a ground sheet;
a feed conductor;
an antenna including an active antenna branch electrically coupled to the feed conductor, and a frequency selective ground sheet extension electrically coupled to the ground sheet, wherein the active antenna branch and the frequency selective ground sheet extension are spaced apart, wherein the active antenna branch and the frequency selective ground sheet extension are arranged along an edge of the ground sheet, wherein the electrical coupling between the active antenna branch and the feed conductor and the electrical coupling between the frequency selective ground sheet extension and the ground sheet are provided adjacent a same end of the edge of the ground sheet, and wherein the frequency selective ground sheet extension is at least about 50% of a length of the edge of the ground sheet; and
a filter electrically coupled between the frequency selective ground sheet extension and the ground sheet.
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Abstract
A communications structure may include a ground sheet, a feed conductor, and an active antenna branch electrically coupled to the feed conductor. A parasitic antenna branch may be electrically coupled to the ground sheet, and the active and parasitic antenna branches may be spaced apart. Moreover, the parasitic antenna branch may be between portions of the active antenna branch and the ground sheet.
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Citations
20 Claims
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1. A communications structure comprising:
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a ground sheet; a feed conductor; an antenna including an active antenna branch electrically coupled to the feed conductor, and a frequency selective ground sheet extension electrically coupled to the ground sheet, wherein the active antenna branch and the frequency selective ground sheet extension are spaced apart, wherein the active antenna branch and the frequency selective ground sheet extension are arranged along an edge of the ground sheet, wherein the electrical coupling between the active antenna branch and the feed conductor and the electrical coupling between the frequency selective ground sheet extension and the ground sheet are provided adjacent a same end of the edge of the ground sheet, and wherein the frequency selective ground sheet extension is at least about 50% of a length of the edge of the ground sheet; and a filter electrically coupled between the frequency selective ground sheet extension and the ground sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A communications structure comprising:
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a ground sheet; a feed conductor; an antenna including an active antenna branch electrically coupled to the feed conductor, and a parasitic antenna branch electrically coupled to the ground sheet, wherein the active and parasitic antenna branches are spaced apart wherein the active and parasitic antenna branches are arranged along an edge of the ground sheet, and wherein the electrical coupling between the active antenna branch and the feed conductor and the electrical coupling between the parasitic antenna branch and the ground sheet are provided adjacent opposite ends of the edge of the ground sheet; and a filter electrically coupled between the parasitic antenna branch and the ground sheet. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification