Compact spiral antenna
First Claim
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1. A multiple frequency band antenna for receiving electromagnetic radiation signals, comprising:
- a dielectric substrate;
first and second spirals on a first surface of said substrate for radiating said electromagnetic radiation signals; and
a third spiral on a second surface of said substrate, said third spiral being substantially underneath one of said first and second spirals so as to at least partially cover at least one of said first and second spirals.
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Abstract
An antenna is provided that receives electromagnetic radiation and includes a dielectric substrate (106). First and second spirals (60 and 70) on a first surface of the substrate (106) radiate the electromagnetic radiation. A third spiral (80) is utilized on a second surface of the substrate (106) and is substantially underneath one of the first and second spiras(60 and 70). The resulting spiral antenna is compact and has multioctave bandwidth capability.
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Citations
19 Claims
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1. A multiple frequency band antenna for receiving electromagnetic radiation signals, comprising:
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a dielectric substrate; first and second spirals on a first surface of said substrate for radiating said electromagnetic radiation signals; and a third spiral on a second surface of said substrate, said third spiral being substantially underneath one of said first and second spirals so as to at least partially cover at least one of said first and second spirals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A multiple frequency band antenna for receiving electromagnetic radiation signals, comprising:
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a dielectric substrate; first and second spirals on a first surface of said substrate for radiating said electromagnetic radiation signals; and a third spiral on a second surface of said substrate, said third spiral being substantially underneath one of said first and second spirals, said third spiral having a conductor centerline, said first and second spirals being positioned so that said first spiral is substantially positioned over the conductor centerline of said third spiral so as to at least partially cover said third spiral; said antenna operating at a predetermined wavelength, said first, second and third spirals defining the height above a ground plane, wherein the height above said ground plane is less than 15 percent of said predetermined wavelength. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification