Non-contact wireless communication coil, transmission coil, and portable wireless terminal

• US 9,634,515 B2
• Filed: 04/05/2016
• Issued: 04/25/2017
• Est. Priority Date: 11/02/2011
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Hirobe, Takanori, Uejima, Hiroyuki, Koyanagi, Yoshio
• Primary Examiner(s): JEANGLAUDE, JEAN BRUNER
• Application Number:
  US15/091,375
• Publication Number:
  US 20160218549A1
• Time in Patent Office: 385 Days
• Field of Search: 343720
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/2208 associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems methods or arrangements for sensing record carriers, e.g. for reading patterns G06K7/00; record carrier for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/248 provided with an AC/DC converting device, e.g. rectennas
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 5/40 Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 7/06 with core of ferromagnetic material H01Q7/02 takes precedence
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• 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: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/72 : for local intradevice communication
• CPC Class Codes: H04B 5/79 : for data transfer in combination with power transfer

Abstract

A chargeable communication module is provided, which includes: a wireless power charging coil; a wireless communication coil being electrically isolated from the wireless power charging coil; and a magnetic body. The wireless power charging coil is disposed on a surface of the magnetic body. The wireless communication coil is arranged peripheral to the wireless power charging coil. A center of the wireless power charging coil is offset from a center of the wireless communication coil.

Claims

1. A chargeable communication module comprising:

a wireless power charging coil;

a wireless communication coil being electrically isolated from the wireless power charging coil; and

a magnetic sheet;

wherein the wireless power charging coil is disposed on a surface of the magnetic sheet,

the wireless communication coil includes a winding portion arranged peripheral to the wireless power charging coil, and

a center of the wireless power charging coil is offset from a center of the wireless communication coil.

2. The chargeable communication module according to claim 1, wherein the wireless power charging coil has a first resonant frequency and the wireless communication coil has a second resonant frequency different from the first resonant frequency.

3. The chargeable communication module according to claim 2, wherein the first resonant frequency of the wireless power charging coil is lower than the second resonant frequency of the wireless communication coil.

4. The chargeable communication module according to claim 1, further comprising:

a substrate on which the wireless communication coil is arranged;

wherein the wireless communication coil is interposed between the substrate and the surface of the magnetic sheet.

5. The chargeable communication module according to claim 1, wherein the wireless communication coil has a polygonal shape defined by multiple sides and multiple corner portions, and

a first shortest distance between the wireless power charging coil and the wireless communication coil at one of the corner portions is greater than a second shortest distance between the wireless power charging coil and the wireless communication coil at one of the sides.

6. The chargeable communication module according to claim 5, wherein the wireless power charging coil has a circular shape.

7. The chargeable communication module according to claim 1, wherein the wireless power charging coil has a circular shape.

8. The chargeable communication module according to claim 1, wherein the wireless communication coil has multiple sides and multiple corner portions.

9. The chargeable communication module according to claim 1, wherein a number of windings included in the wireless power charging coil is greater than a number of windings included in the wireless communication coil.

10. The chargeable communication module according to claim 1, wherein the wireless communication coil is disposed on the magnetic sheet.

11. The chargeable communication module according to claim 1, wherein the wireless communication coil is disposed on another magnetic sheet different from the magnetic sheet.

12. The chargeable communication module according to claim 1, wherein the wireless power charging coil includes a wound conductive wire.

13. The chargeable communication module according to claim 1, wherein the wireless communication coil includes a conductive wiring pattern formed on a substrate.

14. The chargeable communication module according to claim 1, wherein at least a part of the wireless communication coil is disposed outside of the magnetic sheet.

15. The chargeable communication module according to claim 1, wherein the wireless communication coil is configured to perform communication by electromagnetic induction.