Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium

• US 10,069,185 B2
• Filed: 02/23/2017
• Issued: 09/04/2018
• Est. Priority Date: 06/25/2015
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Henry, Paul Shala, Bennett, Robert, Barzegar, Farhad, Gerszberg, Irwin, Barnickel, Donald J., Willis, III, Thomas M.
• Primary Examiner(s): Mai, Lam T
• Application Number:
  US15/440,500
• Publication Number:
  US 20170229755A1
• Time in Patent Office: 558 Days
• Field of Search: 375231, 375222, 375256, 375257, 398 44, 398139, 398201, 398 5
• CPC Class Codes: H01P 1/16 for mode selection, e.g. mode suppression or mode promotion; for mode conversion
• CPC Class Codes: H01P 3/10 Wire waveguides, i.e. with a single solid longitudinal conductor
• CPC Class Codes: H01P 3/127 with a circular, elliptic, or parabolic cross-section
• CPC Class Codes: H01P 3/16 Dielectric waveguides, i.e. without a longitudinal conductor
• CPC Class Codes: H01P 5/08 for linking dissimilar lines or devices H01P1/16, H01P5/04 take precedence; linking lines of the same kind but with different dimensions H01P5/02
• CPC Class Codes: H01P 5/19 of the junction type
• CPC Class Codes: H01Q 13/025 Multimode horn antennas; Horns using higher mode of propagation H01Q13/0241 takes precedence; multiple beam H01Q25/04
• CPC Class Codes: H04B 3/52 Systems for transmission between fixed stations via waveguides
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

Aspects of the subject disclosure may include, for example, a system for generating first electromagnetic waves and directing instances of the first electromagnetic waves to an interface of a transmission medium to induce propagation of second electromagnetic waves having at least a dominant non-fundamental wave mode. Other embodiments are disclosed.

Claims

1. A method, comprising:

receiving, by a plurality of circuits of a waveguide system, a first electromagnetic wave at a first interface of a first transmission medium, wherein the first electromagnetic wave substantially has a non-fundamental wave mode, wherein the first electromagnetic wave propagates along the first transmission medium without requiring an electrical return path, and wherein each circuit receives an instance of a first plurality of instances of the first electromagnetic wave; and

generating, by plurality of circuits, a signal according to the first plurality of instances of the first electromagnetic wave.

2. The method of claim 1, wherein a first circuit of the plurality of circuits is configured to receive a first instance of the first plurality of instances of the first electromagnetic wave with a first electric field orientation, wherein a second circuit of the plurality of circuits is configured to receive a second instance of the first plurality of instances of the first electromagnetic wave with a second electric field orientation, and wherein the first electric field orientation is substantially aligned to the second electric field orientation.

3. The method of claim 1, wherein each circuit of the plurality of circuits comprises an antenna.

4. The method of claim 1, wherein the plurality of circuits comprise a plurality of microwave circuits.

5. The method of claim 4, wherein each microwave circuit of the plurality of microwave circuits comprises a receiver portion for receiving the first plurality of instances of the first electromagnetic wave.

6. The method of claim 5, wherein each microwave circuit of the plurality of microwave circuits further comprises a transmitter portion for transmitting a second plurality of instances of a second electromagnetic wave.

7. The method of claim 1, further comprising transmitting, by the plurality of circuits, a second plurality of instances of a second electromagnetic wave to a second interface of a second transmission medium to induce propagation of a combined electromagnetic wave guided by the second transmission medium.

8. The method of claim 7, wherein at least a dominant non-fundamental wave mode of the combined electromagnetic wave has a spatial orientation based on a position of at least one of the plurality of circuits surrounding the second transmission medium.

9. The method of claim 7, wherein the first transmission medium and the second transmission medium are a same transmission medium.

10. The method of claim 1, wherein the receiving the first plurality of instances of the first electromagnetic wave comprises:

configuring a first circuit of the plurality of circuits to receive a first instance of the first plurality of instances of the first electromagnetic wave having a first phase; and

configuring a second circuit of the plurality of circuits to receive a second instance of the first plurality of instances of the first electromagnetic wave having a second phase.

11. A system, comprising:

a plurality of receivers facilitating generation of a signal based on reception of a plurality of instances of an electromagnetic wave that propagates along a transmission medium without requiring an electrical return path, wherein the plurality of instances of the electromagnetic wave has different phases, and wherein the electromagnetic wave substantially has a non-fundamental wave mode; and

an interface for transmitting the signal.

12. The system of claim 11, wherein a first receiver of the plurality of receivers is configured to receive a first instance of the plurality of instances of the electromagnetic wave with a first electric field orientation, wherein a second circuit of the plurality of receivers is configured to receive a second instance of the plurality of instances of the electromagnetic wave with a second electric field orientation, and wherein the first electric field orientation is substantially asymmetric to the second electric field orientation.

13. The system of claim 11, wherein the plurality of receivers surround the transmission medium, and wherein the non-fundamental wave mode of the electromagnetic wave has a spatial orientation corresponding to a position of at least one of the plurality of receivers.

14. The system of claim 11, wherein each of the plurality of receivers receives an instance of the plurality of instances of the electromagnetic wave at the interface.

15. The system of claim 11, wherein the interface of the transmission medium comprises a core, and wherein the electromagnetic wave is guided and bound to the core.

16. The system of claim 11, wherein the system comprises a waveguide structure for directing the plurality of instances of the electromagnetic wave from the transmission medium to the plurality of receivers.

17. The system of claim 16, wherein the waveguide structure has a tapered cross-section.

18. The system of claim 16, wherein the waveguide structure has a cylindrical cross-section.

19. A method, comprising:

selecting, by a waveguide system, a non-fundamental wave mode from a plurality of selectable wave modes;

configuring at least one adjustable receiver of a plurality of adjustable receivers of the waveguide system according to parametric information associated with the non-fundamental wave mode selected; and

receiving, by the at least one adjustable receiver configured according to the parametric information, at least one instance of a plurality of instances of an electromagnetic wave propagating along a transmission medium, wherein the electromagnetic wave has the non-fundamental wave mode selected.

20. The method of claim 19, wherein the parametric information comprises an adjustable frequency, an adjustable phase, an adjustable magnitude, an adjustable electric field orientation, an adjustable magnetic field orientation, an adjustable field intensity, or any combinations thereof.