Efficient loop antenna of reduced diameter
First Claim
1. An efficient loop antenna of reduced size, comprising:
- a dielectric substrate disposed on a conductive ground plane, said substrate having a plurality of regions of differing substrate characteristics;
an elongated conductive antenna element arranged in the form of a loop and disposed on a first region of said substrate;
said first region of said substrate having a relative permeability that is higher as compared to a second region of said substrate.
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Accused Products
Abstract
The invention concerns an efficient loop antenna of reduced size. The antenna is formed on a dielectric substrate disposed on a conductive ground plane. The substrate has a plurality of regions of differing substrate characteristics. An elongated conductive antenna element is arranged in the form of a loop and disposed on a first region of the substrate. The antenna element can have first and second adjacent end portions separated by a gap. The first region of the substrate has a relative permeability that is higher as compared to a second region of the substrate on which the remainder of the circuitry is disposed. According to one aspect of the invention, the relative permeability of the first region is greater than 1.
42 Citations
17 Claims
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1. An efficient loop antenna of reduced size, comprising:
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a dielectric substrate disposed on a conductive ground plane, said substrate having a plurality of regions of differing substrate characteristics;
an elongated conductive antenna element arranged in the form of a loop and disposed on a first region of said substrate;
said first region of said substrate having a relative permeability that is higher as compared to a second region of said substrate. - View Dependent Claims (2)
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3. An efficient loop antenna of reduced size, comprising:
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a dielectric substrate disposed on a conductive ground plane, said substrate having a plurality of regions of differing substrate characteristics;
an elongated conductive antenna element arranged in the form of a loop and disposed on a first region of said substrate, said first region of said substrate having a relative permeability that is higher as compared to a second region of said substrate; and
an input coupler, said input coupler comprising a conductive line disposed on said substrate adjacent to said antenna element and separated from said antenna element by a coupling space for coupling to said antenna element an input signal applied to said input coupler. - View Dependent Claims (4, 5, 6, 7, 8)
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9. An efficient loop antenna of reduced size, comprising:
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a dielectric substrate disposed on a conductive around plane, said substrate having a plurality of regions of differing substrate characteristics; and
an elongated conductive antenna element arranged in the form of a loop and disposed on a first region of said substrate, said first region of said substrate having a relative permeability that is higher as compared to a second region of said substrate;
wherein said antenna element is divided into a plurality of elongated conductive segments, each having adjacent end portions separated by a third characteristic region of said substrate, said third characteristic region of said substrate having a permittivity that is larger than a permittivity of said second characteristic region of said substrate on which is disposed said elongated conductive segments.
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10. A printed circuit antenna with broadband input coupling, comprising:
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a dielectric substrate disposed on a conductive ground plane; and
an elongated conductive antenna element arranged in the form of a loop and disposed on said substrate, said antenna element having first and second adjacent end portions separated by a gap, said antenna element disposed on a first region of said substrate having a permeability larger than a second region surrounding said antenna element. - View Dependent Claims (11, 12, 13)
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14. A printed circuit antenna with broadband input coupling, comprising:
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a dielectric substrate disposed on a conductive ground plane;
an elongated conductive antenna element arranged in the form of a loop and disposed on said substrate, said antenna element having first and second adjacent end portions separated by a gap, said antenna element disposed on a first region of said substrate having a permeability larger than a second region surrounding said antenna element; and
an input coupler is disposed on a third region of said substrate, said third region having a relative permeability that is smaller than the relative permeability of said first region of said substrate.
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15. A printed circuit antenna with broadband input coupling, comprising:
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a dielectric substrate disposed on a conductive ground plane; and
an elongated conductive antenna element arranged in the form of a loop and disposed on said substrate, said antenna element having first and second adjacent end portions separated by a gap, said antenna element disposed on a first region of said substrate having a permeability larger than a second region surrounding said antenna element;
wherein said antenna element is divided into a plurality of elongated conductive segments, each having adjacent end portions separated by a third characteristic region of said substrate, said third characteristic region of said substrate having a permittivity that is larger than a permittivity of said first region of said substrate on which are disposed said elongated conductive segments.
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16. A loop antenna, comprising:
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a dielectric substrate disposed on a conductive ground plane, said substrate having a plurality of regions of differing substrate characteristics;
an elongated conductive antenna element arranged in the form of a loop and disposed on a first region of said substrate;
wherein said antenna element is divided into a plurality of elongated conductive segments, each having adjacent end portions separated by a second characteristic region of said substrate, said second characteristic region of said substrate having a permittivity that is larger than a permittivity of said first region of said substrate on which are disposed said elongated conductive segments. - View Dependent Claims (17)
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Specification