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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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.
59 Citations
13 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, 3, 4, 5, 6, 7, 8, 9)
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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;
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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Specification