Ferrite resonators using magnetic biasing and spin precession

• US 10,601,370 B2
• Filed: 12/17/2015
• Issued: 03/24/2020
• Est. Priority Date: 12/17/2014
• Status: Active Grant

• Current Assignee: Vida Products
• Original Assignee: Vida Products
• Inventors: Parrott, Ronald A., Sweet, Allen A.
• Primary Examiner(s): Kinkead, Arnold M
• Application Number:
  US15/536,413
• Publication Number:
  US 20180006603A1
• Time in Patent Office: 1,559 Days
• Field of Search: 333202, 333219, 3332192, 333 99 S, 333235, 331 96, 331117 D, 331177 R, 331 77, 505866, 505210
• CPC Class Codes: H01P 1/218 the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters
• CPC Class Codes: H01P 7/08 Strip line resonators
• CPC Class Codes: H03B 2200/009 Reduction of phase noise
• CPC Class Codes: H03B 5/1882 the frequency-determining element being a magnetic-field sensitive resonator, e.g. a Yttrium Iron Garnet or a magnetostatic surface wave resonator
• CPC Class Codes: H03B 9/142 and comprising a magnetic field sensitive element, e.g. YIG

Abstract

A low loss unidirectional conductive sheet using magnetic field biasing and electron spin precession for coupling RF power to ferrite resonators, comprising the step of placing a plurality of ferrite resonators in a bias magnetic field to excite the electron spins of the materials of said ferrite resonators into precession.

Claims

1. A magnetic biased low loss unidirectional conductor that couples RF power to a ferrite resonator, comprising:

a first coupling puck having a disc body with generally planar top and bottoms sides;

an array of spaced apart parallel conductor strips separated by dielectric and disposed on said top side of said disc body to form a wide pattern; and

a ferrite resonator puck disposed on said top side of said first coupling puck.

2. The conductor of claim 1, wherein said array of parallel conductor strips is wider than said ferrite resonator puck and long enough to eliminate end effects in relation to said ferrite resonator.

3. The conductor of claim 2, wherein said conductor strips extend from their ends at each side of said array into an expanded region of thin conductor material disposed over a portion of the top surface of said top side of said disc body.

4. The conductor of claim 3, wherein said conductor strips and said expanded conductor regions are each fabricated from graphene.

5. The conductor of claim 1, wherein said conductor further includes a second coupling puck disposed under said first coupling puck, said second coupling puck having a disc body with generally planar top and bottoms sides and an array of spaced apart parallel conductor strips separated by dielectric and disposed on said top side of said disc body to form a wide pattern of conductor strips orthogonal to said conductor strips of said array on said first coupling puck.

6. The conductor of claim 1, wherein said ferrite resonator puck is at least one nanoscale YIG sphere.

7. The conductor of claim 6, including an array of nanoscale YIG spheres disposed on a plurality of said coupling pucks and spaced to optimize magnetic coupling between said nanoscale YIG spheres at a frequency determined by the bias magnetic field intensity.

8. The conductor of claim 1, including an array of nanoscale YIG spheres disposed on a plurality of said coupling pucks and spaced to optimize magnetic coupling between said nanoscale YIG spheres at a frequency determined by the bias magnetic field intensity.