Method for coding field emission structures

• US 7,864,010 B2
• Filed: 06/05/2009
• Issued: 01/04/2011
• Est. Priority Date: 04/04/2008
• Status: Expired due to Fees

• Current Assignee: Correlated Magnetics Research, LLC
• Original Assignee: Cedar Ridge Research LLC
• Inventors: Fullerton, Larry W., Roberts, Mark D., Richards, James L.
• Primary Examiner(s): Barrera, Ramon M
• Application Number:
  US12/479,509
• Publication Number:
  US 20100045416A1
• Time in Patent Office: 578 Days
• Field of Search: 335/285, 335302-306, 243/03, 310/80, 310/90.5, 310/103, 310/308, 310/309
• US Class Current: 335/306
• CPC Class Codes: F02P 3/02 having inductive energy storage, e.g. arrangements of induction coils ignition coils structurally combined with sparking plugs F02P13/00; constructional details of ignition coils H01F38/12
• CPC Class Codes: H01F 2038/127 with magnetic circuit including permanent magnet
• CPC Class Codes: H02K 35/02 with moving magnets and stationary coil systems
• CPC Class Codes: H02K 39/00 Generators specially adapted for producing a desired non-sinusoidal waveform
• CPC Class Codes: Y10T 24/32 having magnetic fastener

Abstract

An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.

Claims

1. A field emission system, comprising:

a first field emission structure, said first field emission structure comprising a first plurality of field emission sources having positions and polarities in accordance with a spatial force function, said positions of said first plurality of field emission sources being configured such that distances between all combinations of any two field emission sources of said first plurality of field emission sources are unique; and

a second field emission structure, said second field emission structure comprising a second plurality of field emission sources having positions and polarities in accordance with said spatial force function, said positions of said second plurality of field emission sources being configured such that distances between all combinations of any two field emission sources of said second plurality of field emission sources are unique, said spatial force function corresponding to a code modulo defined by a code, said code modulo having a peak spatial force and a plurality of off peak spatial forces, said plurality of off peak spatial forces having a largest off peak spatial force, said largest off peak spatial force being less than half of the peak spatial force.

2. The system of claim 1, wherein said distances between the field emission sources of said first plurality of field emission sources are the same as the distances between field emission sources of said second plurality of field emission sources.

3. The system of claim 1, wherein said positions of said first plurality of field emission sources are in accordance with a first code.

4. The system of claim 3, wherein said first code is a Golumb ruler code.

5. The system of claim 3, wherein said positions of said second plurality of field emission sources are in accordance with said first code.

6. The system of claim 3, wherein said polarities of said first plurality of field emission sources are in accordance with a second code.

7. The system of claim 6, where said second code is one of a Barker code, a Gold code, a Kasami sequence, a hyperbolic congruential code, a quadratic congruential code, a linear congruential code, a pseudorandom code, or a chaotic code.

8. The system of claim 1, wherein said polarities of said first plurality of field emission sources are the same.

9. The system of claim 1, wherein said polarities of said second plurality of field emission sources are the same as said polarities of said first plurality of field emission sources.

10. The system of claim 1, wherein at least some of said polarities of said second plurality of field emission sources are different than said polarities of said first plurality of field emission sources.

11. The system of claim 1, wherein said first field emission structure is complementary to said second field emission structure.

12. The system of claim 1, further comprising:

a plurality of said first field emission structures.

13. The system of claim 1, wherein said first plurality of field emission sources has positions corresponding to a first code applied in a first dimension.

14. The system of claim 13, wherein said first code is a Golomb ruler code.

15. The system of claim 13, wherein said first plurality of field emission sources has polarities corresponding to a second code applied in a second dimension.

16. The system of claim 15, wherein said first code is a Golomb ruler code and said second code is a Barker code.

17. The system of claim 1, wherein positions of said first plurality of field emission sources are in accordance with a first code corresponding to a Costas array.

18. The system of claim 17, wherein said Costas array corresponds to one of a Welch-Costas array or an array generated using the Lempel-Golomb technique.

19. The system of claim 17, wherein said polarities of said first plurality of field emission sources are in accordance with a second code.

20. The system of claim 1, wherein at least one of said first field emission structure or said second field emission structure comprises a permanent magnet, an electromagnet, an electret, a magnetized ferromagnetic material, a portion of a magnetized ferromagnetic material, a soft magnetic material, or a superconductive magnetic material.