Multi-band antenna
First Claim
1. A multi-band antenna that operates in non-harmonically related frequency bands, such antenna comprising:
- a primary antenna element for a first frequency band of the non-harmonically related bands, said primary antenna element extending from a ground plane printed circuit board, the primary antenna element electrically isolated from the ground plane, first and second portions of said primary antenna element disposed on first and second interleaved printed circuit boards, respectively;
a plurality of secondary antenna elements extending from the ground plane parallel to the primary antenna element and arranged in a circle with the plurality of secondary antenna elements each capacitively coupled to the primary antenna element and ground plane so as to electrically float between an electrical potential of the primary antenna element and ground plane, first and second portions of said plurality of secondary antenna elements disposed on said first and second interleaved printed circuit boards, respectively; and
a plurality of antenna elements for a second frequency band of the non-harmonically related bands, said plurality of second frequency band antenna elements electrically isolated from the ground plane and extending parallel to the primary and secondary antenna elements, the plurality of second frequency band antenna elements arranged in a circle that surrounds the secondary antenna elements with the primary element disposed at the center of both circles, first and second portions of said plurality of second frequency band antenna elements disposed on said first and second interleaved printed circuit boards, respectively,wherein the first portions of said primary antenna element, said plurality of secondary antenna elements, and said plurality of second frequency band antenna elements are aligned in a straight line on the first interleaved printed circuit board, andwherein the second portions of said primary antenna element, said plurality of secondary antenna elements, and said plurality of second frequency band antenna elements are aligned in a straight line on the second interleaved printed circuit board.
2 Assignments
0 Petitions
Accused Products
Abstract
A multi-band antenna is provided that operates in non-harmonically related frequency bands. The antenna includes a primary antenna element for a first frequency band of the non-harmonically related bands, said primary antenna element extending perpendicularly from a ground plane, the primary antenna element electrically isolated from the ground plane, a plurality of secondary elements extending from the ground plane parallel to the primary antenna element and arranged in a circle around the primary antenna element, each of said plurality of secondary elements electrically isolated from the primary antenna element and ground plane and a plurality of antenna elements for a second frequency band of a higher relative frequency than the first frequency band, the plurality of high frequency antenna elements extending parallel to the primary and secondary antenna elements and disposed in a circle around the secondary antenna elements.
10 Citations
20 Claims
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1. A multi-band antenna that operates in non-harmonically related frequency bands, such antenna comprising:
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a primary antenna element for a first frequency band of the non-harmonically related bands, said primary antenna element extending from a ground plane printed circuit board, the primary antenna element electrically isolated from the ground plane, first and second portions of said primary antenna element disposed on first and second interleaved printed circuit boards, respectively; a plurality of secondary antenna elements extending from the ground plane parallel to the primary antenna element and arranged in a circle with the plurality of secondary antenna elements each capacitively coupled to the primary antenna element and ground plane so as to electrically float between an electrical potential of the primary antenna element and ground plane, first and second portions of said plurality of secondary antenna elements disposed on said first and second interleaved printed circuit boards, respectively; and a plurality of antenna elements for a second frequency band of the non-harmonically related bands, said plurality of second frequency band antenna elements electrically isolated from the ground plane and extending parallel to the primary and secondary antenna elements, the plurality of second frequency band antenna elements arranged in a circle that surrounds the secondary antenna elements with the primary element disposed at the center of both circles, first and second portions of said plurality of second frequency band antenna elements disposed on said first and second interleaved printed circuit boards, respectively, wherein the first portions of said primary antenna element, said plurality of secondary antenna elements, and said plurality of second frequency band antenna elements are aligned in a straight line on the first interleaved printed circuit board, and wherein the second portions of said primary antenna element, said plurality of secondary antenna elements, and said plurality of second frequency band antenna elements are aligned in a straight line on the second interleaved printed circuit board. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A multi-band antenna that operates in non-harmonically related frequency bands, such antenna comprising:
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a primary antenna element for a first frequency band of the non-harmonically related bands, said primary antenna element extending from a ground plane printed circuit board, the primary antenna element electrically isolated from the ground plane, first and second portions of said primary antenna element disposed on first and second interleaved printed circuit boards, respectively; a plurality of secondary antenna elements electrically isolated from the primary antenna element extending from the ground plane parallel to the primary antenna element and arranged in a circle with the primary antenna element disposed at the center of the circle, each of said plurality of secondary antenna elements including a support pad disposed adjacent the ground plane that supports the secondary antenna element, first and second portions of said plurality of secondary antenna elements disposed on said first and second interleaved printed circuit boards, respectively; a dielectric spacer disposed between each of the plurality of support pads and the ground plane to electrically isolate the support pads and secondary antenna elements from the ground plane; and a plurality of antenna elements for a second frequency band with a higher relative frequency than the first frequency band, the plurality of antenna elements for the second frequency band extending parallel to the primary and secondary antenna elements and disposed in a circle with the primary antenna element located at the center of the circle of antenna elements for the second frequency band, first and second portions of said plurality of antenna elements for the second frequency band disposed on said first and second interleaved printed circuit boards, respectively, wherein the first portions of said primary antenna element, said plurality of secondary antenna elements, and said plurality of antenna elements for the second frequency band are aligned in a straight line on the first interleaved printed circuit board, and wherein the second portions of said primary antenna element, said plurality of secondary antenna elements, and said plurality of antenna elements for the second frequency band are aligned in a straight line on the second interleaved printed circuit board. - View Dependent Claims (13, 14, 15)
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16. A multi-band antenna that operates in non-harmonically related frequency bands, such antenna comprising:
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a primary antenna element for a first frequency band of the non-harmonically related bands, said primary antenna element extending perpendicularly from a ground plane printed circuit board, the primary antenna element electrically isolated from the ground plane, first and second portions of said primary antenna element disposed on first and second interleaved printed circuit boards, respectively; a plurality of secondary elements extending from the ground plane parallel to the primary antenna element and arranged in a circle around the primary antenna element, each of said plurality of secondary elements electrically isolated from the primary antenna element and ground plane, first and second portions of said plurality of secondary antenna elements disposed on said first and second interleaved printed circuit boards, respectively; and a plurality of antenna elements for a second frequency band of a higher relative frequency than the first frequency band, the plurality of antenna elements for the second frequency band extending parallel to the primary and secondary antenna elements and disposed in a circle around the secondary antenna elements, first and second portions of said plurality of antenna elements for the second frequency band disposed on said first and second interleaved printed circuit boards, respectively, wherein the first portions of said primary antenna element, said plurality of secondary antenna elements, and said plurality of antenna elements for the second frequency band are aligned in a straight line on the first interleaved printed circuit board, and wherein the second portions of said primary antenna element, said plurality of secondary antenna elements, and said plurality of antenna elements for the second frequency band are aligned in a straight line on the second interleaved printed circuit board. - View Dependent Claims (17, 18, 19, 20)
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Specification