Frequency selective multi-feed dielectric antenna system and methods for use therewith

Patent metadata

Field	Value
Publication number	US-10938108-B2
Application number	US-201615372464-A
Country	US
Kind code	B2
Filing date	Dec 8, 2016
Priority date	Dec 8, 2016
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

In accordance with one or more embodiments, an antenna system includes a dielectric antenna having a feed-point, wherein the dielectric antenna is a single antenna having a plurality of antenna beam patterns. At least one cable having a plurality of conductorless dielectric cores is coupled to the feed-point of the dielectric antenna, each of the plurality of conductorless dielectric cores corresponding to one of the plurality of antenna beam patterns. A frequency selective launcher generates electromagnetic waves and couples the electromagnetic waves to a selected one of the plurality of conductorless dielectric cores, the selected one of the plurality of conductorless dielectric cores corresponding to a selected one of the plurality of antenna beam patterns.

First claim

What is claimed is:

1. An antenna system, comprising:
a dielectric antenna including a feed-point, wherein the dielectric antenna is a single antenna configured to selectively generate a plurality of antenna beam patterns;
at least one cable comprising a plurality of conductorless dielectric cores coupled to the feed-point of the dielectric antenna, each of the plurality of conductorless dielectric cores, when selected, is configured to supply a select one of electromagnetic waves to the feed-point of the dielectric antenna, and the select one of the electromagnetic waves transforming at the dielectric antenna to be emitted as a selected one of the plurality of antenna beam patterns, wherein the select one of the electromagnetic waves propagates at least in part on an outer surface of the plurality of conductorless dielectric cores without requiring an electrical return path, wherein the at least one cable includes a dielectric cladding that supports the plurality of conductorless dielectric cores and an outer jacket, wherein the at least one cable lacks a conductive shield layer, wherein the plurality of conductorless dielectric cores has a first dielectric constant, wherein the dielectric cladding has a second dielectric constant, and wherein the first dielectric constant exceeds the second dielectric constant, wherein the dielectric cladding comprises a low density dielectric material; and
a frequency selective launcher configured to generate the select one of the electromagnetic waves at a corresponding one of a plurality of frequencies, wherein the frequency selective launcher is further configured to couple, based on the corresponding one of the plurality of frequencies, the select one of the electromagnetic waves to a selected one of the plurality of conductorless dielectric cores to generate the selected one of the plurality of antenna beam patterns, wherein the frequency selective launcher includes a plurality of filters, wherein the plurality of filters are each coupled to differing ones of the plurality of conductorless dielectric cores, wherein the plurality of filters are configured to pass differing ones of the plurality of frequencies, and wherein the frequency selective launcher couples the select one of the electromagnetic waves to the selected one of the plurality of conductorless dielectric cores by one of the plurality of filters passing the select one of the electromagnetic waves at the corresponding one of the plurality of frequencies.

2. The antenna system of claim 1 , wherein the dielectric antenna operates to generate a wireless signal, having the selected one of the plurality of antenna beam patterns, resulting from propagation of the electromagnetic waves through the dielectric antenna.

3. The antenna system of claim 2 , wherein the wireless signal radiates outward from an aperture of the dielectric antenna.

4. The antenna system of claim 3 , wherein a second wireless signal is received at the aperture in alignment with the selected one of the plurality of antenna beam patterns.

5. The antenna system of claim 4 , wherein the second wireless signal traverses a proximal portion of the dielectric antenna as an electromagnetic wave to the feed-point of the dielectric antenna and is directed to the selected one of the plurality of conductorless dielectric cores for coupling back to the frequency selective launcher for extraction of the electromagnetic wave and reception by a receiver.

6. The antenna system of claim 1 , wherein the plurality of conductorless dielectric cores are coupled to differing spatial locations at the feed-point of the dielectric antenna.

7. The antenna system of claim 1 , wherein the plurality of conductorless dielectric cores is resistant to propagation of electromagnetic waves having an optical operating frequency.

8. The antenna system of claim 1 , wherein the frequency selective launcher further a plurality of launchers and wherein the frequency selective launcher launches, via one of the plurality of launchers, the select one of the electromagnetic waves on the selected one of the plurality of conductorless dielectric cores.

9. The antenna system of claim 1 , wherein the dielectric antenna has a flared structure.

10. The antenna system of claim 1 , wherein the dielectric antenna has a pyramidal structure.

11. The antenna system of claim 1 , wherein the dielectric antenna is conductorless.

12. The antenna system of claim 1 , wherein the electromagnetic waves are within a microwave frequency band.

13. The antenna system of claim 1 , wherein the plurality of conductorless dielectric cores includes an opaque or substantially opaque dielectric material that is resistant to propagation of electromagnetic waves having an optical operating frequency.

14. The antenna system of claim 1 , wherein the outer jacket is composed of a weatherproof material.

Assignees

• At & T Ip I Lp

Inventors

• Henry Paul Shala
• Barnickel Donald J
• Barzegar Farhad
• Bennett Robert
• Gerszberg Irwin
• Willis Iii Thomas M

Classifications

• H01Q3/22 Primary

  varying the orientation in accordance with variation of frequency of radiated wave · CPC title

• H01Q13/24

  constituted by a dielectric or ferromagnetic rod or pipe (H01Q13/28 takes precedence) · CPC title

• H01Q25/007

  using two or more primary active elements in the focal region of a focusing device (for operation on different wavebands H01Q5/22) · CPC title

• H01Q15/24

  Polarising devices; Polarisation filters  (H01Q15/12, H01Q15/22 take precedence) · CPC title

• H01Q3/245

  in the focal plane of a focussing device · CPC title