Thin film resonator for wireless power transmission

• US 8,994,481 B2
• Filed: 12/14/2010
• Issued: 03/31/2015
• Est. Priority Date: 12/14/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Ryu, Young Ho, Park, Eun Seok, Kwon, Sang Wook, Hong, Young Tack, Kim, Nam Yun, Lee, Jung Hae, Park, Jae Hyun, Park, Byung Chul
• Primary Examiner(s): TAKAOKA, DEAN O
• Application Number:
  US12/967,195
• Publication Number:
  US 20110140809A1
• Time in Patent Office: 1,568 Days
• Field of Search: 333/219, 333/219.1, 333/219.2, 333/221, 333/223, 333/234, 333/235
• US Class Current: 333/219
• CPC Class Codes: H01P 7/082 Microstripline resonators H01P7/088 takes precedence

Abstract

A thin film resonator for a wireless power transmission is provided. The thin film resonator may include a first transmission line unit provided as a thin film type, a second transmission line unit also provided as the thin film type, and a capacitor inserted at a predetermined position of the first transmission line unit.

Claims

1. A resonator for wireless power transmission, the resonator comprising:

a first transmission line unit provided as a thin film type and comprising two end portions forming a gap between the end portions;

a second transmission line unit provided as the thin film type, and comprising two ends portions forming a gap between the end portions; and

a capacitor that is disposed between the two end portions of the first transmission line unit, wherein

the first and second transmission line units are electrically connected in parallel through the end portions of the first transmission line unit and the end portions of the second transmission line unit.

2. The resonator of claim 1, wherein the capacitor is configured such that the resonator has a property of a metamaterial.

3. The resonator of claim 1, wherein the capacitor is configured such that the resonator has a zero magnetic permeability or a negative magnetic permeability at a target frequency.

4. The resonator of claim 1, wherein the first transmission line unit and the second transmission line unit are configured to form a stacked structure.

5. The resonator of claim 4, wherein the stacked structure of the first transmission line unit and the second transmission line unit comprises a ferromagnetic substance or a magneto-dielectric structure.

6. The resonator of claim 1, further comprising:

a micro-strip line to supply an electric current to the first transmission line unit.

7. The resonator of claim 1, further comprising:

a bonding layer disposed on a surface of the resonator, and configured to bond the resonator to an object.

8. The resonator of claim 1, wherein the two end portions of each of the first transmission line unit and the second transmission line unit comprise a hole.

9. The resonator of claim 1, wherein the gap of the second transmission line unit remains open.

10. The resonator of claim 1, further comprising:

a dielectric material layer disposed between the first transmission line unit and the second transmission line unit, and

conductive layers formed between the first transmission line unit and the dielectric material layer and between the second transmission lint unit and the dielectric material layer, respectively.

11. The resonator of claim 1, further comprising a dielectric material layer disposed between and directly contacting the first and second transmission line units.

12. A resonator for wireless power transmission, the resonator comprising:

a first transmission line unit provided as a thin film type and having a gap between portions of the first transmission line;

a second transmission line unit provided as the thin film type, electrically connected in parallel to the first transmission unit, and comprising two end portions forming a gap between the end portions;

a space between laminations of the first transmission line unit and the second transmission line unit; and

a capacitor inserted in the gap between the portions of the first transmission line unit and electrically connected in series with the portions of the first transmission line.

13. The resonator of claim 12, wherein the first transmission line unit comprises one or more vias that electrically interconnect the first and second transmission line units.