Stub loaded helix antenna
First Claim
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1. An antenna, comprising:
- a continuous length of conductive material formed in the shape of a helix and having a plurality of stub regions along a curve length of said helix which extend towards a central axis of said helix, said helix having a non-zero pitch angle.
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Abstract
A helical antenna having stubs spaced along the helix curve length and extending toward the central axis of the helix, such that the performance characteristics of the antenna, such as gain and circular polarization, are maintained while the size of the antenna--diameter and length--are reduced.
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Citations
16 Claims
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1. An antenna, comprising:
a continuous length of conductive material formed in the shape of a helix and having a plurality of stub regions along a curve length of said helix which extend towards a central axis of said helix, said helix having a non-zero pitch angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An antenna, comprising:
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a continuous length of conductive wire wound around a plurality of turns in a cylinder shape forming a helix having a non-zero pitch angle α
, a circumference of said helix being 2π
times a radius of said cylinder shape; anda plurality of wedge-shaped stub regions formed along said continuous length of said conductive wire directed toward a center axis of said helix, said plurality of wedge-shaped stub regions having a depth less said radius of said cylinder shape. - View Dependent Claims (13, 14, 15, 16)
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Specification