IP Library › Granted Patent US 8,811,914
Granted Patent B2
US 8,811,914 · App. 12/858,733 · Granted Aug 19, 2014

Method and apparatus for dynamically processing an electromagnetic beam

Inventors: David Michael Britz (Rumson, NJ); Robert Raymond Miller, II (Convent Station, NJ)
Assignee: AT&T Intellectual Property I, L.P.
H01Q3/44H01Q15/0026H01Q15/0086H01Q15/002
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Quick Facts
Patent No.
US 8,811,914
App. No.
12/858,733
Granted
Aug 19, 2014
Kind
B2
Abstract

A method and apparatus for processing a terahertz frequency electromagnetic beam are disclosed. For example, the method receives the terahertz frequency electromagnetic beam via a metamaterial having a plurality of addressable magnetic elements, where a resonant frequency of each of the plurality of addressable magnetic elements is capable of being programmably changed via an adjustment, and activates selectively a subset of the plurality of addressable magnetic elements to manipulate the terahertz frequency electromagnetic beam.

Claims (23)

1. A method for processing a terahertz frequency electromagnetic beam, comprising:

receiving the terahertz frequency electromagnetic beam via a plurality of stacked layers, wherein each one of the plurality of stacked layers comprises a plurality of metamaterial layers stacked in a three dimensional matrix, wherein each one of the plurality of stacked layers produces a different wave front effecting property, each one of the plurality of metamaterial layers having a plurality of addressable magnetic elements arranged in a matrix comprising a plurality of rows and a plurality of columns, where a resonant frequency of each of the plurality of addressable magnetic elements is capable of being programmably changed to form a metamaterial hologram;

activating, by a processor, a subset of the plurality of addressable magnetic elements to form the metamaterial hologram in each one of the plurality of metamaterial layers in a first stacked layer of the plurality of stacked layers;

and manipulating, by the processor, the terahertz frequency electromagnetic beam with the metamaterial hologram of each one of the plurality of metamaterial layers through the first stacked layer of the plurality of stacked layers, wherein the manipulating comprises performing pre-distortion of an outgoing wave front to compensate for a measured atmospheric distortion that occurs after transmission.

2. The method of claim 1 , further comprising manipulating in a second stacked layer of the plurality of stacked layers to cause a change in a path of the terahertz frequency electromagnetic beam.

3. The method of claim 1 , further comprising manipulating in a second stacked layer of the plurality of stacked layers to cause a change in a shape of the terahertz frequency electromagnetic beam.

4. The method of claim 1 , further comprising manipulating in a second stacked layer of the plurality of stacked layers to cause a change in a focus of the terahertz frequency electromagnetic beam.

5. The method of claim 1 , further comprising manipulating in a second stacked layer of the plurality of stacked layers to cause a change in a timing of the terahertz frequency electromagnetic beam.

6. The method of claim 1 , further comprising manipulating in a second stacked layer of the plurality of stacked layers to cause a change in a frequency of the terahertz frequency electromagnetic beam.

7. The method of claim 1 , wherein the plurality of addressable magnetic elements comprises a plurality of addressable split-ring resonators.

8. The method of claim 7 , wherein each of the plurality of addressable split-ring resonators is independently addressable.

9. The method of claim 8 , wherein each addressable split-ring resonator comprises a varactor device.

10. The method of claim 9 , wherein each varactor device exhibits a capacitance proportional to a programmably-applied voltage.

11. The method of claim 10 , wherein each programmably-applied voltage of each varactor is stored by a capacitor connected to a field effect transistor.

12. The method of claim 11 , wherein each varactor's bias is applied through two resistors connected to the capacitor for isolating a DC bias.

13. The method of claim 1 , wherein the processor is in a base station.

14. The method of claim 1 , wherein the processor is in a mobile endpoint device.

15. The method of claim 1 , further comprising:

establishing a communication link using the terahertz frequency electromagnetic beam.

16. The method of claim 1 , wherein the manipulating is based on a signal strength of the terahertz frequency electromagnetic beam.

17. An apparatus for manipulating a terahertz frequency electromagnetic beam, comprising:

a three-dimensional matrix comprising a plurality of stacked layers, wherein each one of the plurality of stacked layers comprises a stack of programmable two-dimensional metamaterial layers of a plurality of addressable magnetic elements arranged in a matrix comprising a plurality of rows and a plurality of columns, where a resonant frequency of each of the plurality of addressable magnetic elements is capable of being programmably changed to form a metamaterial hologram, wherein each one of the plurality of stacked layers produce a different wave front effecting property; and

a controller coupled to the three-dimensional matrix, wherein the controller activates a subset of the plurality of addressable magnetic elements of each one of the programmable two-dimensional metamaterial layers of a first stacked layer of the plurality of stacked layers to form the metamaterial hologram on each one of the programmable two-dimensional metamaterial layers that manipulates the terahertz frequency electromagnetic beam, wherein the manipulating comprises performing pre-distortion of an outgoing wave front to compensate for a measured atmospheric distortion that occurs after transmission.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 18, 2010
From: BRITZ, DAVID; MILLER II, ROBERT R
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 024854/0341 →
Continuity (2)
Provisional Application 61254102 · Oct 22, 2009
Related Publication 20110098033A1 · Apr 28, 2011