Dipole arrangements using dielectric substrates of meta-materials
AssigneeHarris Corporation
InventorsWilliam D. Killen, Randy T. Pike
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Abstract
The invention concerns a dipole antenna of reduced size and with improved impedance bandwidth. The antenna is preferably formed on a dielectric substrate having a plurality of regions, each having a characteristic relative permeability and permittivity. First and second dipole radiating element defining conductive paths can be selectively formed on first characteristic regions of the substrate having a first characteristic permeability and first permittivity. A reactive coupling element can be interposed between the dipole radiating elements for reactively coupling the first dipole radiating element to the second dipole radiating element.
Claims20
A dipole antenna with improved impedance bandwidth, comprising:
- a dielectric substrate having a plurality of regions, each having a characteristic relative permeability and permittivity;
- a first and second dipole radiating element defining conductive paths and selectively formed on first characteristic regions of said substrate having a first characteristic permeability and first permittivity;
- a reactive coupling element interposed between said dipole radiating elements for reactively coupling said first dipole radiating element to said second dipole radiating element, said reactive coupling element coupled to a second characteristic region of said substrate having a second permittivity and second permeability for providing a desired reactance value for said reactive coupling element;
- and
- wherein said first and second characteristic regions are different from a third characteristic region of said substrate with regard to at least one of permeability and permittivity.
An antenna, comprising:
- a dielectric substrate having a plurality of regions, each having a characteristic permeability and permittivity;
- at least one radiating element defining a conductive path and selectively formed on first characteristic regions of said substrate having a first characteristic permeability and first permittivity;
- at least one reactive coupling element interposed between portions of said conductive path separated by a gap, said reactive coupling element coupled to a second characteristic region of said substrate having a second permittivity and second permeability for providing a desired reactance value for said reactive coupling element;
- and
- wherein said first and second characteristic regions are different from a third characteristic region of said substrate with regard to at least one of permeability and permittivity.
The antenna according to claim 18 wherein said capacitive coupling is at least partially determined by said second relative permittivity.
Dependencies are inferred from the claim text.