Antenna structure with hollow-boresight antenna beam
First Claim
Patent Images
1. A dielectric antenna, comprising:
- a dielectric antenna body having a longitudinal axis and an aperture; and
a feed point configured to receive first electromagnetic waves propagating along a core without requiring an electrical return path;
wherein the first electromagnetic waves propagate through the dielectric antenna body and generate free-space wireless signals from the aperture of the dielectric antenna body in accordance with a hollow-boresight antenna beam pattern having a null in a direction corresponding to the longitudinal axis of the dielectric antenna body.
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Abstract
In accordance with one or more embodiments, a communication device includes a dielectric antenna having a longitudinal axis, a feed point and an aperture. A cable comprising a core is coupled to the feed point of the dielectric antenna. A transmitter, coupled to the cable, facilitates a transmission of first electromagnetic waves to the feed point of the dielectric antenna, the first electromagnetic waves guided by the core. The first electromagnetic waves propagate along the core without requiring an electrical return path, and the first electromagnetic waves generate free-space wireless signals from the aperture of the antenna in accordance with a hollow-boresight antenna beam pattern.
270 Citations
20 Claims
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1. A dielectric antenna, comprising:
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a dielectric antenna body having a longitudinal axis and an aperture; and a feed point configured to receive first electromagnetic waves propagating along a core without requiring an electrical return path; wherein the first electromagnetic waves propagate through the dielectric antenna body and generate free-space wireless signals from the aperture of the dielectric antenna body in accordance with a hollow-boresight antenna beam pattern having a null in a direction corresponding to the longitudinal axis of the dielectric antenna body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An antenna structure, comprising:
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a solid dielectric antenna having a longitudinal axis, a feed point and an aperture; and a cable comprising a core coupled to the feed point of the solid dielectric antenna, wherein the core comprises a solid dielectric material and wherein the core facilitates a propagation of electromagnetic waves to the feed point of the solid dielectric antenna without requiring an electrical return path, the electromagnetic waves guided by the core, and wherein the electromagnetic waves generate a antenna beam pattern from the aperture of the solid dielectric antenna, the beam pattern having a relatively low field strength in a direction corresponding to the longitudinal axis of the solid dielectric antenna compared with directions that deviate from the direction corresponding to the longitudinal axis of the solid dielectric antenna. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An antenna comprising:
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dielectric antenna body means for transmitting free space wireless signals, the dielectric antenna body means an aperture; and feed point means coupled to the dielectric antenna body means, for receiving a propagation of electromagnetic waves from a dielectric core without requiring an electrical return path, wherein the electromagnetic waves generate the free space wireless signals with a hollow-boresight antenna beam pattern from the aperture of the dielectric antenna means.
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Specification