RESONANCE TERMINAL DEVICE FOR RESONANT WIRELESS POWER RECEPTION SYSTEM

• US 20130293027A1
• Filed: 05/02/2013
• Published: 11/07/2013
• Est. Priority Date: 05/02/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Joon-Il, PARK, Se-Ho, YEO, Sung-Ku, LEE, Woo-Ram, LEE, Jeong-Seok
• Granted Patent: US 9,601,264 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H03H 7/0115 comprising only inductors and capacitors H03H7/075, H03H7/09, H03H7/12, H03H7/13 take precedence
• CPC Class Codes: H04B 5/0037 for power transfer
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04M 2250/04 including near field communication means, e.g. RFID

Abstract

A shunt capacitor is connected to a wireless charging resonator to prevent harmonics emitted from a power amplifier from radiating to the outside, and at least one circuit having a high impedance relative to a Near Field Wireless Communication (NFC) frequency band is formed at a front side or a rear side of the shunt capacitor for solving the problems of radiating noise components due to wireless charging and of lowering an NFC signal and a power transmission intensity due to a concurrent interference between a wireless charging resonator and an NFC antenna.

Claims

1. A resonance terminal device for a resonant wireless power reception system, comprising:

a Wireless Power Transmission (WPT) resonator installed adjacent to a Near Field wireless Communication (NFC) antenna; and

a shunt capacitor connected to at least one of two terminals of the WPT resonator and having a preset capacity.

3. The resonance terminal device of claim 1, further comprising a high impedance circuit for an NFC frequency band provided in the WPT resonator and a signal and power transmission path connected to the WPT resonator.

4. The resonance terminal device of claim 1, wherein the high impedance circuit is installed at a front side or a rear side of the shunt capacitor and is realized by a Band Stop Filter (BSF).

5. The resonance terminal device of claim 4, wherein the BSF structure is applied to both terminals of the WPT resonator.

8. The resonance terminal device of claim 1, wherein the shunt capacitor has a capacity of at least 100 pF.

9. The resonance terminal device of claim 1, wherein the NFC antenna is mechanically disposed inside the WPT resonator.

11. The resonance terminal device of claim 3, wherein the NFC antenna is mechanically disposed inside the WPT resonator.

2. A resonance terminal device for a resonant wireless power reception system, comprising:

a Wireless Power Transmission (WPT) resonator installed adjacent to a Near Field Wireless Communication (NFC) antenna; and

a high impedance circuit for an NFC frequency band provided in the WPT resonator and a signal and power transmission path connected to the WPT resonator.

6. The resonance terminal device of claim 2, wherein the high impedance circuit is installed at a front side or a rear side of the shunt capacitor and is realized by a Band Stop Filter (BSF).

7. The resonance terminal device of claim 6, wherein the BSF structure is applied to both terminals of the WPT resonator.

10. The resonance terminal device of claim 2, wherein the NFC antenna is mechanically disposed inside the WPT resonator.