IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
`US009515513B2
`
`112~ United States Patent
`Suzuki et al.
`
`110) Patent No. :
`145) Date of Patent:
`
`US 9,515,513 B2
`Dec. 6, 2016
`
`154) MOBILE DEVICE AND COMBO COIL
`MODULE
`
`171) Applicant: Sony Corporation, Tokyo 1JP)
`
`172)
`
`Inventors: Katsuya Suzuki, Tokyo 1JP); Kanjiro
`Shimizu, Tokyo 1JP); Kuniharu
`Suzuki, Tokyo 1JP)
`
`173) Assignees: Sony Corporation, Tokyo 1JP); Sony
`Inc. , Tokyo
`Mobile Communications,
`1JP)
`
`* ) Notice:
`
`1
`
`the term of this
`Subject to any disclaimer,
`is extended or adjusted under 35
`patent
`U.S.C. 1541b) by 676 days.
`
`121) Appl. No. : 13/892, 930
`
`122) Filed:
`
`May 13, 2013
`
`165)
`
`Prior Publication Data
`
`US 2014/0333253 Al
`
`Nov. 13, 2014
`
`151)
`
`12016.01)
`12006.01)
`12006.01)
`12006.01)
`
`Int. Cl.
`H02J 7/02
`H01F 27/36
`H01F 38/14
`H04B 5/00
`152) U.S. Cl.
`CPC ............. H02J 7/025 12013.01); H01F 27/365
`12013.01); H01F 38/14 12013.01); H02J 50/12
`12016.02); H04B 5/0037 12013.01); H04B
`5/0093 12013.01)
`
`158) Field of Classification Search
`CPC ...... HOIF 38/14; HOIF 27/365; H02J 7/025;
`H02J 50/12; H04B 5/0037; H04B 5/0093
`See application file for complete search history.
`
`156)
`
`References Cited
`
`4/2014 Hidaka
`
`U.S. PATENT DOCUMENTS
`2013/0267170 Al * 10/2013 Chong
`2014/0091758 Al *
`2014/0145807 Al *
`5/2014 Choi
`2014/0291404 Al * 10/2014 Matsuoka
`2014/0306656 Al * 10/2014 Tabata
`2014/0362505 Al * 12/2014
`Jang ... ... ...
`2014/0375262 Al * 12/2014 Yamaguchi
`2015/0123604 Al*
`
`5/2015 Lee . ... ... ...
`
`H04B 1/3833
`455/41. 1
`. ... .. H01F 38/14
`320/108
`. ... .. H01F 38/14
`335/302
`. G06K 7/10881
`235/462. 46
`.. ... .. H01F 38/14
`320/108
`.. .. H05K 9/0075
`361/679.4
`H02J 7/025
`320/108
`.. ... .. H01F 38/14
`320/108
`
`FOREIGN PATENT DOCUMENTS
`
`2/2011
`
`2011-30299 A
`* cited by examiner
`Primary Examiner
`Lewis West
`174) Attorney, Agent, or Firm
`Maier & Neustadt, L.L.P.
`
`Oblon, McClelland,
`
`ABSTRACT
`157)
`a near
`An apparatus may
`field communication
`include
`(NFC) antenna coil and a wireless power receiving coil. The
`NFC antenna coil and the receiving coil may be arranged on
`sheet. The wireless power receiving coil may be
`a magnetic
`disposed on the magnetic
`concentrically
`sheet within
`an
`inner periphery of the NFC antenna coil. An inner diameter
`of the wireless power receiving coil may be greater
`than or
`to an inner diameter of reference listener antenna coil
`equal
`RL-6, of the reference listener coils specified by the NFC
`forum.
`
`19 Claims, 12 Drawing Sheets
`
`"4
`
`AD
`
`AD
`
`Petitioner Samsung and Google Ex-1005, 0001
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
`
`Sheet 1 of 12
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`US 9,515,513 B2
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`3a
`
`Figure IA
`
`Figure IB
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`Petitioner Samsung and Google Ex-1005, 0002
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
`
`Sheet 2 of 12
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`US 9,515,513 B2
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`Petitioner Samsung and Google Ex-1005, 0003
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
`
`Sheet 3 of 12
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`US 9,515,513 B2
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`Petitioner Samsung and Google Ex-1005, 0004
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`

`

`U.S. Patent
`
`Dec. 6, 2016
`
`Sheet 4 of 12
`
`US 9,515,513 B2
`
`71.6mm
`
`TRACK WIDTH = Q.5mm
`
`Figure 4A
`
`41.2mm
`
`TRACK WIDTH = Q.3mm
`
`Figure 4B
`16.7mm ~ TRACK WIDTH = 0,3mm
`
`24.7mm
`
`Figure 4C
`
`Petitioner Samsung and Google Ex-1005, 0005
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
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`Sheet 5 of 12
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`US 9,515,513 B2
`
`OL
`
`OI
`
`Ul
`LI
`
`LA
`
`Q pL
`
`L
`
`CL
`
`Petitioner Samsung and Google Ex-1005, 0006
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
`
`Sheet 6 of 12
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`US 9,515,513 B2
`
`COIlm
`
`Q)
`LL
`
`C)
`CO
`C)
`
`0
`
`C7
`
`CV
`
`CD
`CD
`cD
`C7
`
`EE
`
`EE
`
`C)
`CO
`
`CO
`CD
`CO
`
`CN
`
`CL
`
`cu
`E
`
`EE I
`
`IN
`
`Il
`N
`
`o A
`
`ll m~
`Oo
`
`All
`
`o ~ o
`m A
`Oo
`
`o ~ o
`V m A
`o
`O
`
`4-
`
`co
`O M
`O
`
`O O0
`
`Petitioner Samsung and Google Ex-1005, 0007
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
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`Sheet 7 of 12
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`US 9,515,513 B2
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`AD
`
`AD
`
`Figure 7A
`
`Figure 78
`
`Petitioner Samsung and Google Ex-1005, 0008
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
`
`Sheet 8 of 12
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`US 9,515,513 B2
`
`Coupling
`
`Coupling
`
`Coupling
`
`C1
`
`~C3
`
`C2
`
`Figure 8
`
`Rx
`
`Tx
`
`11 (or 13 or 16)
`
`Petitioner Samsung and Google Ex-1005, 0009
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
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`Sheet 9 of 12
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`US 9,515,513 B2
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`AE
`
`AE
`
`Figure 9A
`
`Figure 9B
`
`Petitioner Samsung and Google Ex-1005, 0010
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
`
`Sheet 10 of 12
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`US 9,515,513 B2
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`AF
`
`AF
`
`Figure 10A
`
`5
`5
`Figure 1OB
`
`Petitioner Samsung and Google Ex-1005, 0011
`
`

`

`U.S. Patent
`
`Dec. 6, 2016
`
`Sheet 11 of 12
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`US 9,515,513 B2
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`Petitioner Samsung and Google Ex-1005, 0012
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`

`

`U.S. Patent
`
`Dec. 6, 2016
`
`Sheet 12 of 12
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`US 9,515,513 B2
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`Petitioner Samsung and Google Ex-1005, 0013
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`

`

`US 9,515,513 B2
`
`1
`MOBILE DEVICE AND COMBO COIL
`MODULE
`
`BACKGROUND
`
`Technical Field
`The present disclosure relates to mobile devices, such as
`the present disclo-
`mobile telephone terminals. Specifically,
`to mobile devices provided with a near
`sure relates
`field
`charging function.
`function and a wireless
`communication
`the present disclosure is related to a combo coil
`Moreover,
`in such a mobile device,
`is incorporated
`module
`the
`that
`combo coil combining
`a near field communication
`antenna
`coil for near
`and a wireless power
`field communication,
`receiving coil for wireless charging.
`Description of Related Art
`in recent years have incorporated
`Mobile devices
`near
`(NFC) functions. NFC is an interna-
`field communication
`standard using a 13.56 MHz electro-
`tional communication
`magnetic wave. NFC performs
`at a
`data communication
`range typically within 10 cm.
`the function of a non-contact
`IC card has
`In recent years,
`IC
`into mobile devices. A non-contact
`been incorporated
`from Sony Cor-
`called FeliCa (trademark)
`card technique
`IC card
`as a non-contact
`has been developed
`poration
`IC card may typically utilize a 13.56
`function. Anon-contact
`MHz electromagnetic wave between
`and
`readers/writers,
`at 100 to 400 kbps at about a 10 cm
`perform communication
`standard used by FeliCa is NFC.
`range. The communication
`is, NFC is an upward compatibility of FeliCa. In the
`That
`for NFC/FeliCa is generally
`present disclosure,
`the antenna
`called an NFC antenna.
`an NFC antenna mounted
`in a mobile device
`Generally,
`may be influenced
`such as a battery pack that
`by metals,
`exists in the vicinity of the NFC antenna. One measure
`for
`the influence of metallic
`elements on the NFC
`mitigating
`the battery pack magnetically
`is by shielding
`antenna
`by
`sheet between, e.g. , the NFC antenna
`a magnetic
`arranging
`behind the NFC
`and the battery pack which is arranged
`the influence of
`for mitigating
`antenna. Another measure
`elements on an NFC antenna
`metallic
`the
`is by arranging
`NFC antenna
`away from the
`at a position
`substantially
`the antenna does not experience the
`battery pack such that
`influence of the metallic elements.
`Furthermore, when a mobile device has a function of
`the mobile
`a battery mounted
`wirelessly
`inside
`charging
`device, a wireless power receiving coil may be arranged in
`the mobile device. The wireless power
`receiving coil typi-
`cally has a specified plane coil structure of about a 30 mm
`diameter.
`
`SUMMARY
`
`The foregoing general description of illustrative
`embodi-
`thereof are
`description
`detailed
`and the following
`ments
`merely exemplary aspects of the teachings of this disclosure,
`and are not restrictive.
`the ability to
`Design limitations on mobile devices restrict
`receiving coil and
`simultaneously mount a wireless power
`an NFC antenna coil when wireless charging and near field
`same mobile device.
`are desired
`communication
`in the
`characteristics of both the NFC
`performance
`Additionally,
`antenna coil and the wireless power receiving coil should be
`and size of each
`considered when designing the arrangement
`sizing of each
`coil module. That
`is, the arrangement
`and/or
`of the NFC antenna
`coil and the wireless power
`receiving
`coil should be designed such that, e.g., one side of a coil does
`
`characteristics of the other. Addi-
`inhibit performance
`not
`sizing of each of the NFC
`the arrangement
`and/or
`tionally,
`antenna coil and the wireless power receiving coil should be
`of metallic
`such that
`the
`elements
`influence
`designed
`in the mobile device is inhibited.
`included elsewhere
`describes
`Among other
`the present disclosure
`a
`things,
`charac-
`combo coil module that provides high performance
`teristics for both an NFC antenna coil and a wireless power
`the influence of metallic
`coil, while preventing
`receiving
`parts in a mobile device from impairing performance of the
`combo coil module.
`A combo coil module of the present
`disclosure may
`include an NFC antenna coil and a wireless power receiving
`coil. The NFC antenna coil and the wireless power receiving
`coil may be arranged
`sheet. The wireless
`on a magnetic
`power receiving coil may be concentrically
`disposed on the
`of the NFC
`sheet within
`an inner
`magnetic
`periphery
`diameter of the wireless
`coil. An inner
`power
`antenna
`than or equal
`coil may be greater
`to an inner
`receiving
`diameter of reference
`coil RL-6, of the
`listener
`antenna
`reference listener coils specified by the NFC forum.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`Amore complete appreciation of this disclosure and many
`of the attendant
`thereof will be readily obtained
`advantages
`as the same becomes better understood
`by reference to the
`following detailed description when considered in connec-
`tion with the accompanying
`drawings, wherein:
`FIGS. 1A and 1B respectively
`a top view and a
`illustrate
`view of an exemplary
`cross-sectional
`combo coil module;
`FIGS. 2A and 2B respectively
`a top view and
`illustrate
`view of exemplary mobile
`cross-sectional
`device
`that
`combo coil module;
`an exemplary
`includes
`FIGS. 3A and 3B respectively
`a top view and a
`illustrate
`view of an exemplary mobile device that
`cross-sectional
`includes an exemplary combo coil module formed integrally
`with a battery pack;
`of three types of
`FIGS. 4A to 4C illustrate
`dimensions
`reference listener device coils that are specified by the NFC
`forum;
`an exemplary method of deter-
`FIGS. 5A to 5C illustrate
`characteristics of an NFC antenna coil
`mining dimensional
`and a wireless power receiving coil with respect to reference
`listener coils RL-I, RL-3, and RL-6, which are shown in
`FIGS. 5A through 5C;
`FIG. 6 illustrates
`from a
`results
`experimental
`exemplary
`combo coil
`using an exemplary
`field simulation
`magnetic
`module and a reference listener coil;
`FIGS. 7A and 7B respectively
`a top view and a
`illustrate
`view of an exemplary
`cross-sectional
`combo coil module
`a resonance coil;
`includes
`that
`FIG. S illustrates
`circuit diagram
`an exemplary equivalent
`between an NFC antenna
`coil, a
`showing the relationship
`resonance coil, and an opposing antenna;
`of
`FIGS. 9A and 9B provide
`non-limiting
`examples
`another aspect of the present disclosure
`in which an NFC
`antenna coil and a wireless power receiving coil are embed-
`to form a combo coil module;
`ded within a magnetic
`sheet
`FIGS. 10A and 10B respectively illustrate a top view and
`view of an exemplary
`cross-sectional
`combo coil module
`a resonance coil embedded in the combo coil
`includes
`that
`module's magnetic
`sheet;
`examples of
`FIGS. 11A and 11B provide non-limiting
`altering a size of a combo coil module based on a size of
`mobile device in which the combo coil mobile is used;
`
`6
`
`10
`
`16
`
`20
`
`26
`
`30
`
`36
`
`40
`
`46
`
`60
`
`66
`
`60
`
`66
`
`Petitioner Samsung and Google Ex-1005, 0014
`
`

`

`US 9,515,513 B2
`
`example of a combo
`FIG. 12A provides
`a non-limiting
`coil module
`that has not been resized to accommodate
`in size of a battery pack; and
`increases
`FIG. 12B illustrates
`a combo coil module that has been
`resized to accommodate
`a larger battery pack.
`
`DETAILED DESCRIPTION
`
`Referring now to the drawings, wherein
`like reference
`or
`designate
`identical
`numerals
`corresponding
`parts
`the several views.
`throughout
`First, FIGS. 1A and 1B respectively
`a top view
`illustrate
`view of an exemplary
`and a cross-sectional
`combo coil
`module 1. In particular, FIG. 1B illustrates
`a cross-sectional
`in FIG. 1A. For
`to line AA shown
`view corresponding
`for the
`and connection points
`detailed wiring
`simplicity,
`combo coil module 1 are omitted from the figures.
`As shown in FIG. 1A, the exemplary combo coil module
`1 may include a wireless power receiving coil 4 concentri-
`cally disposed within an inner edge 3a of an NFC antenna
`coil 3. The NFC antenna
`coil 3 and the wireless power
`sheet 2.
`receiving coil 4 may be arranged upon a magnetic
`sheet 2 may be sized such that
`The magnetic
`the perfor-
`of elements
`characteristics
`mance
`the
`arranged within
`combo coil module 1 are not
`by external metal
`influenced
`objects, such as a battery pack within a mobile device. In the
`case in which the magnetic sheet 2 is included for preventing
`influence of a battery pack,
`sheet 2 may be
`the magnetic
`size of the
`sized such that
`the same
`it
`substantially
`is
`battery pack. Further, dimensions of the mag-
`corresponding
`to dimensions of
`than or equal
`netic sheet 2 may be greater
`the battery pack. Moreover,
`sheet 2 may have
`the magnetic
`to another
`in a mobile
`element
`dimensions
`corresponding
`influence of the element on the
`phone device to mitigate
`performance of the combo coil module 1.
`The NFC antenna coil 3 and the wireless power receiving
`coil 4 may be mounted on the magnetic
`sheet 2 such that a
`mobile device battery is separated from the NFC antenna
`coil 3 and the wireless
`coil 4 by the
`receiving
`power
`sheet 2 (e.g.,
`the battery
`is housed behind
`the
`magnetic
`sheet 2 when installed in a mobile device).
`magnetic
`Referring now to FIG. 1B,the NFC antenna coil 3 and the
`coil 4 may be mounted
`on the
`receiving
`wireless power
`sheet 2 by an affixing element 5. The affixing
`magnetic
`element 5 may, e.g., be double-sided tape or another suitable
`agent. While FIG. 1B illustrates
`the NFC antenna
`adhesive
`coil 3 and the wireless
`coil 4 as being
`receiving
`power
`mounted flush with a top surface of the magnetic sheet 2, this
`should not be construed as limiting.
`arrangement
`Both the NFC antenna
`coil 3 and the wireless
`power
`receiving coil 4 may be formed by winding electroconduc-
`times to form the respective antenna/coil.
`tive wire multiple
`(ke., a width of a coil's perimeter
`the thickness
`Usually,
`edge, such as inner edge 3a) of the wireless power receiving
`than the thickness of the NFC antenna coil
`coil 4 is greater
`3. However,
`this should not be construed as limiting,
`and it
`the thickness of the NFC antenna
`should be appreciated that
`than the thickness of the
`to or greater
`coil 3 may be equal
`receiving coil 4.
`wireless power
`sheet 2 may be
`As previously mentioned,
`the magnetic
`in the combo coil module 1 for mitigating
`the
`included
`influence of metallic objects (e.g., a battery pack) located
`proximity of the combo coil module
`within a predetermined
`1.As a non-limiting
`sheet 2 may be
`the magnetic
`example,
`high mag-
`formed by ferrous materials with comparatively
`frequency corre-
`netic permeability with respect
`to a target
`sponding to the combo coil module 1. With the presence of
`
`6
`
`10
`
`16
`
`20
`
`26
`
`30
`
`36
`
`40
`
`46
`
`60
`
`66
`
`60
`
`66
`
`sheet 2, a magnetic
`permeable magnetic
`the magnetically
`from the NFC antenna
`coil 3 that
`is generated
`flux that
`the combo coil module 1 may flow through
`the
`opposes
`inside of the magnetic
`sheet 2 without a magnetic loss such
`the magnetic flux is concentrated in the magnetic
`sheet
`that
`2.
`
`Next, FIGS. 2A and 2B respectively illustrate
`a top view
`view of a non-limiting
`example of a
`and cross-sectional
`mobile device 10 that
`combo coil
`includes
`the exemplary
`module 1. Specifically, FIG. 2B provides
`a cross-sectional
`in FIG. 2A. The
`to line AB shown
`view corresponding
`in this example may, e.g., be a
`mobile device 10 illustrated
`a tablet computer, or the
`cellular
`a smartphone,
`telephone,
`like. For simplicity,
`to mobile
`that are typical
`elements
`such as a display screen, are omitted in the draw-
`devices,
`ings.
`In the exemplary case of FIGS. 2A and 2B, the combo coil
`the mobile device 10 at a
`module 1 is arranged within
`to a battery pack 9. That
`location corresponding
`the
`is,
`battery pack 9 is located at a position within the mobile
`sheet 2. The mobile
`device 10 that
`is behind the magnetic
`device 10 may include a battery cover 12, which may have
`to those of the mobile device 10.
`dimensions
`corresponding
`cover 12 may have dimensions
`the battery
`Alternatively,
`to the battery pack 9. The battery pack 9 may
`corresponding
`be a direct current
`(DC) power source for providing wireless
`power to the mobile device 10.Additionally,
`the battery pack
`9 may include
`for
`interface with power
`circuitry
`and/or
`powering the mobile device 10 and/or
`charging the battery
`pack 9. The power circuitry may receive power
`from an
`(AC) power source.
`current
`alternating
`shown in FIGS. 2A and 2B illustrate
`While the examples
`the case in which the combo coil module 1 is formed as a
`separate body from the battery pack 9, this should not be
`example, FIGS. 3A
`construed as limiting. As a non-limiting
`and 3B respectively
`a top view and a cross-
`illustrate
`sectional view of a mobile device 10a in which the combo
`coil module 1 is formed integrally with the battery pack 9.
`Referring to FIG. 3B, the combo coil module 1 may be
`mounted on a top surface of the battery pack 9 within the
`mobile device 10a. The combo coil module 1 of FIG. 3B
`may be mounted to the battery pack 9 by use of a common
`adhesive
`agent/method.
`Next, as an operational mode of a mobile device that
`there com-
`a near
`field communication
`function,
`includes
`monly exists a read/write
`(R/W) mode and a card emulation
`In R/W mode, a mobile device may function as a
`mode.
`from/to an external
`that reads/writes
`(initiator)
`reader/writer
`NFC tag (namely,
`In card emulation mode,
`a target).
`a
`device may become
`mobile
`as a
`a target
`and function
`IC card accessed from an external
`non-contact
`In
`initiator.
`R/W mode, operation of a mobile device that
`includes a near
`function may be tested with a device
`field communication
`reference lis-
`called a reference
`listener. Three exemplary
`specified by the NFC forum include RL-I,
`tener devices
`RL-3, and RL-6. In card emulation mode, operation of a
`mobile device that
`a near
`field communication
`includes
`function may be tested with a device called a reference polar.
`The dimensions of three types of reference listener device
`coils that are specified by the NFC forum are respectively
`shown in FIGS. 4A through 4C. The reference listener coils
`shown in FIGS. 4A through 4C are comprised of a wire
`times in a substantially
`rectangular
`wound multiple
`shape.
`Further, each reference listener coil includes an inner diam-
`to a distance
`eter and an outer diameter
`corresponding
`between an outer edge and an inner edge, respectively, of the
`sides of the
`coils. For
`reference
`listener
`longitudinal
`
`Petitioner Samsung and Google Ex-1005, 0015
`
`

`

`US 9,515,513 B2
`
`coil RL-I of FIG. 4A is
`the reference
`listener
`example,
`illustrated as having inner diameters of 35.5 millimeters
`and
`the reference listener coil RL-I
`65.6 millimeters. Similarly,
`of FIG. 4A is shown
`outer diameters of 41.5
`as having
`and 71.6 millimeters.
`Inner and outer diameters
`millimeters
`of the reference listener coils RL-3 and RL-6 of FIGS. 4B
`and 4C, respectively,
`are similarly illustrated
`in the figures.
`Regarding the respective sizes of the reference listener coils
`of FIGS. 4A through 4C, reference listener coil RL-I is the
`largest of the three coils, and reference listener coil RL-6 is
`the smallest of the three coils.
`of the NFC antenna
`coil 3 and the
`The size/dimension
`wireless power receiving coil 4 may be determined based on
`the reference listener coils of FIGS. 4A to 4C. Determining
`of the NFC antenna coil 3 and the wireless
`a size/dimension
`power receiving coil 4 based on the reference listener coils
`of FIGS. 4A to 4C enables
`the reduction of adverse perfor-
`efi'ects of the NFC antenna
`mance
`and wireless
`power
`to each other when they are
`receiving coils with respect
`simultaneously mounted on the combo coil module 1.
`An exemplary method of determining
`char-
`dimensional
`acteristics of the NFC antenna coil 3 and the wireless power
`receiving coil 4 with respect
`to the reference listener coils
`RL-I, RL-3, and RL-6, is shown in FIGS. 5A through 5C.
`coils RL-I, RL-3, and
`the reference
`listener
`Hereinafter,
`RL-6 may respectively
`as opposing anten-
`shown/described
`nas 11, 13, and 16.The opposing antennas 11, 13, and 16 are
`referred to as opposing
`since reference
`listener
`antennas
`are typically used by facing (ke. , "opposing")
`the
`antennas
`to the combo coil module.
`reference listener antenna
`Each of FIGS. 5A through 5C illustrates
`one of the three
`reference listener antennas overlapping the combo coil mod-
`ule 1. The reference
`listener coils overlapping
`the combo
`coil module 1 are assumed to be of a difierent dimension
`than the combo coil module 1. Further,
`it is assumed that the
`the combo coil module 1
`reference listener coil overlapping
`is aligned at a common center point of both the reference
`listener coil and the combo coil. However,
`these assump-
`tions should not be construed as limiting.
`to FIG. 5A, in a non-limiting
`Referring first
`example,
`an outer diameter) of an outermost periphery
`size (namely,
`of the NFC antenna
`coil 3 may be determined
`in the
`exemplary method of FIG. 5A such that
`to a
`it corresponds
`size of the biggest
`(ke. RL-I) among
`antenna
`opposing
`antennas 11, 13, and 16.Further,
`the NFC antenna coil 3 may
`be formed by winding a wire toward an inner side of the coil
`from the outermost periphery
`such that a desired inductance
`coil 3.
`can be obtained from the NFC antenna
`example of a
`Next, FIG. 5B illustrates
`a non-limiting
`dimensions of an outer diameter of
`method of determining
`receiving coil 4. Referring to FIG. 5B,
`the wireless power
`the outer diameter of the wireless power
`receiving coil 4
`may be determined
`such that
`than an internal
`it is smaller
`antenna 13. The condition of
`diameter of the opposing
`forming the outer diameter of the wireless power receiving
`than the internal diameter of the
`coil 4 such that it is smaller
`opposing antenna 13 is intended to make as small as possible
`the surface area in which the wireless power receiving coil
`field of the NFC antenna
`coil 3
`4 interrupts
`the magnetic
`antenna 13. In this way,
`to the opposing
`a
`with respect
`magnetic field of the NFC antenna coil 3 may pass through
`diameter of the wireless power
`the space in the internal
`coil 4,
`it with the opposing
`receiving
`thereby
`coupling
`antenna 16. Careful design consideration
`this condi-
`under
`area of the wireless
`tion ensures
`the surface
`power
`that
`receiving coil 4 comprises
`the minimum surface area that
`
`a
`
`5
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
`
`65
`
`the magnetic field of the NFC antenna coil 3 to the
`interrupts
`opposing antenna 11 and the opposing antenna 13.
`an exemplary method of deter-
`Next, FIG. 5C illustrates
`mining a size (namely, an internal diameter) of the innermost
`periphery of the wireless
`coil 4. In the
`receiving
`power
`example of FIG. 5C the internal
`diameter of the wireless
`power receiving coil 4 is determined
`it is substan-
`such that
`than the internal diameter of the
`tially the same or greater
`opposing antenna 16.
`the NFC antenna
`coil 3
`Lastly, as previously mentioned,
`and the wireless power receiving coil 4 may difi'er
`in terms
`of thickness. While not
`the NFC antenna coil 3 is
`limiting,
`assumed to be thinner
`than the wireless power receiving coil
`4 in the foregoing examples. An NFC antenna coil exhibits
`characteristics when
`a distance
`good performance
`in a
`z-direction from the antenna
`(Le. a direction vertical/normal
`the NFC antenna coil from
`to the antenna
`surface) separates
`antenna. Therefore, when an NFC
`a corresponding/opposing
`antenna coil 3 is mounted on the magnetic
`sheet 2 such that
`in the z-direction are opti-
`characteristics
`the performance
`the amount at which the thickness of a mobile device
`mized,
`increases can be kept
`to a minimum.
`Next, FIG. 6 illustrates
`experimental
`results
`exemplary
`the combo coil
`from a magnetic
`field simulation
`using
`antenna 16 (ke. the reference
`module 1 and the opposing
`listener antenna RL-6). The experimental
`results
`shown in
`FIG. 6 are performed
`three conditions, which are
`under
`labeled within FIG. 6 as ¹I, ¹2, and ¹3.The three conditions
`used in the experiment of FIG. 6 are defined as follows:
`Condition ¹I: Di4&Dir16, and
`Do 4&Dor13.
`Condition ¹2: Di4&Dir16, and
`Do 4&Dor13.
`Condition ¹3: Di4oDir16, and
`Do4&Dir13.
`to the above conditions, Di4 represents
`the
`Referring
`diameter of the wireless power
`coil 4.
`receiving
`internal
`diameter of the opposing
`Dir16 represents
`the
`internal
`antenna RL-6). Do4
`16 (ke.
`reference
`listener
`antenna
`the outer diameter of the wireless power receiving
`represents
`the outer diameter of the opposing
`coil 4. Dor13 represents
`antenna 13 (ke. the reference listener antenna RL-3). Dir13
`the internal diameter of the opposing antenna 13.
`represents
`The variable "z" represents
`a distance
`from the opposing
`antenna 16 to the combo coil module 1. In the non-limiting
`example of FIG. 6, the experimental
`results were performed
`with z=l millimeter
`and z=5 millimeters.
`the "AREA SIZE" columns
`in FIG. 6
`Next,
`shown
`(mm ) and the degree of
`indicate
`the distribution
`state
`(%) in the area where the combo coil
`magnetic
`coupling
`module 1 opposes the opposing antenna 16. The area "a" in
`FIG. 6 is defined as an area that shows a level of favorable
`coupling. The area "b" in FIG. 6 is defined as an
`magnetic
`area in which the level of magnetic
`coupling fell from that
`shown in the area a. The area "c"shown in FIG. 6 is defined
`as an area in which the level of magnetic
`coupling is poor.
`Lastly, "T"is defined as the total area (Le. the sum of areas
`a, b, and c).
`As shown in FIG. 6, the area a is shown to be greatest
`under condition ¹3 for both the case of z=l millimeter
`and
`¹3 exhibits
`z=5 millimeters.
`the best
`is, condition
`That
`magnetic coupling characteristics between the NFC antenna
`3 and the opposing antenna 16. Lastly,
`it should be appre-
`ciated that reference listener antenna RL-6 was chosen for
`in the experimental
`results shown in the
`illustrative purposes
`example of FIG. 6 due to the high level of magnetic coupling
`seen with reference listener antenna RL-6.
`
`Petitioner Samsung and Google Ex-1005, 0016
`
`

`

`US 9,515,513 B2
`
`the wireless power receiv-
`Next, as discussed previously,
`a part of a magnetic field of the NFC
`ing coil 4 may interrupt
`on the relative arrangement of the
`antenna coil 3 depending
`coils and therefore, presence of the wireless power receiving
`coil 4 may consequently
`characteristics
`reduce performance
`of the NFC antenna coil 3. To address
`this issue, aspects of
`resonance
`the present disclosure may include an additional
`coil on the combo coil module 1.
`example of providing
`a resonance coil
`As a non-limiting
`on a combo coil module, FIGS. 7A and 7B respectively
`a top view and a cross sectional view of a combo
`illustrate
`includes a resonance coil 6. Specifically,
`coil module 1a that
`FIG. 7B provides
`a cross-sectional
`to
`view corresponding
`the line AD shown in FIG. 7A. As shown in FIGS. 7A and
`7B, the resonance coil 6 may be arranged inside the internal
`diameter of the wireless power
`receiving coil 4, and the
`coil 3.
`coil 6 resonates with the NFC antenna
`resonance
`coupling of
`it is expected that
`the magnetic
`Consequently,
`(e.g.,
`coil 3 and an opposing
`the NFC antenna
`antenna
`11, 13, or 16) becomes
`the
`following
`antennas
`strong
`addition of the resonance coil 6 to combo coil module 1a.As
`shown in FIG. 7B, the resonance coil 6 may be mounted on
`the surface of the magnetic sheet 2 within the inner diameter
`of the wireless
`coil 4 via the affixing
`receiving
`power
`element 5.
`Next, FIG. S illustrates
`circuit
`equivalent
`an exemplary
`between the NFC antenna
`diagram showing the relationship
`(e.g. ,
`coil 3, the resonance coil 6, and an opposing antenna
`antenna 11, 13, or 16). Referring
`the NFC
`to the figure,
`antenna coil 3 may be connected with a capacitor C1 to form
`frequency (e.g., 13.56
`a resonance circuit of a predetermined
`MHz for NFC). The coil of the opposing
`(e.g.,
`antenna
`11/13/16) may be connected with
`a
`antenna
`opposing
`circuit of the predeter-
`capacitor C2 to form a resonance
`coil 6 may be
`the resonance
`mined frequency.
`Similarly,
`connected with the capacitor C3 to form a resonance circuit
`of the predetermined
`frequency. FIG. S illustrates
`in
`that
`addition to the magnetic coupling between the NFC antenna
`coil 3 and the opposing antenna 11 (or 13 or 16), there exists
`a magnetic coupling between the NFC antenna coil 3 and the
`resonance coil 6, as well as a magnetic coupling between the
`resonance coil 6 and the opposing antenna 11 (or 13 or 16).
`examples of
`Next, FIGS. 9A and 9B provide non-limiting
`another aspect of the present disclosure
`in which the NFC
`coil 3 and the wireless power
`receiving coil 4 are
`antenna
`to form a combo coil
`embedded within a magnetic
`sheet
`module. Specifically, FIG. 9B provides
`a cross-sectional
`in FIG. 9A.
`to the line AE shown
`view corresponding
`Referring to the figures, a magnetic sheet 2a may have a size
`to a size of the NFC antenna
`coil 3 and/or a
`corresponding
`coil 3 and the wireless
`battery pack. Further,
`the antenna
`receiving coil 4 may be embedded within the mag-
`power
`netic sheet 2a at a thickness
`to the NFC
`corresponding
`antenna coil 3 thickness. Compared with the magnetic sheet
`2 discussed previously with respect to FIGS. 1A and 1B,the
`thickness of the magnetic
`sheet 2a may be increased by an
`to a thickness of the NFC antenna
`amount
`corresponding
`coil 3.
`to FIG. 9B, the affixing
`element 5 may be
`Referring
`agent of negligible
`to be an adhesive
`thickness,
`assumed
`only a top surface of the NFC antenna
`coil 3 is
`whereby
`exposed from a top surface of the magnetic
`sheet 2a.
`a side portion of the NFC antenna coil 3 may
`Alternatively,
`sheet 2a top surface. Addi-
`be exposed above the magnetic
`receiving coil 4 having a
`tionally, with the wireless power
`than the NFC antenna
`coil 3, an
`thickness
`that
`is greater
`upper part of the wireless power
`receiving coil 4 may be
`
`6
`
`10
`
`16
`
`20
`
`26
`
`30
`
`36
`
`40
`
`46
`
`60
`
`66
`
`60
`
`66
`
`exposed above the top surface of the magnetic
`sheet 2a.
`in FIGS. 9A and
`Under
`the exemplary
`illustrated
`structure
`9B, the amount of magnetic
`field coupling with the NFC
`antenna coil 3 increases,
`thereby improving the performance
`coil 3.
`characteristics of the NFC antenna
`aspect of the present
`disclosure,
`the
`in another
`Next,
`arrangement of FIGS. 9A and 9B may be modi-
`exemplary
`coil 6 is included within the
`the resonance
`fied such that
`embedded area of the magnetic sheet 2a. FIGS. 10A and 10B
`respectively illustrate a top view and cross-sectional view of
`combo coil module 1c, which includes
`the
`an exemplary
`sheet 2a. Refer-
`resonance coil 6 embedded in the magnetic
`ring to FIG. 10B, which illustrates
`a cross-sectional
`view
`to line AF shown in FIG. 10A, the resonance
`corresponding
`sheet 2a at a
`coil 6 may be embedded within the magnetic
`edge of the wireless
`to an inner
`position
`corresponding
`coil 4. The resonance
`coil 6 may be
`receiving
`power
`embedded such that a top surface of the resonance coil 6 is
`sheet 2a top surface.
`flush with the magnetic
`substantially
`coil 6 may be embedded
`the resonance
`such
`Alternatively,
`that a portion of the resonance
`coil 6 side surfaces
`are
`sheet 2a top surface.
`exposed above the magnetic
`the foregoing examples discuss a case in which a
`Next,
`combo coil module is used to mitigate the efl'ects of external
`in a mobile device.
`such as a battery pack,
`metal elements,
`sizing characteristics of the exemplary combo
`Accordingly,
`1 discussed
`coil module
`disclosure were
`in the present
`to that of the
`described
`a size corresponding
`as having
`battery pack in the mobile device. Sizing the combo coil
`module 1 based on the sizing of the battery pack provides the
`advantage of inhibiting magnetic influences
`from the battery
`size increases of the mobile device.
`pack without undue
`As can easily be appreciated,
`battery sizing for mobile
`based on the type of device
`devices may vary substantially
`under consideration. For example,
`a tablet computer may
`have a battery pack having a much larger area than that of
`a mobile telephone. Further, other metallic
`aside
`elements
`from the battery may be of large
`sizes and these other
`the combo coil
`elements may also negatively
`influence
`it may be desired to alter
`module performance. Therefore,
`the sizing characteristics of the combo coil module 1 to
`sizing of batteries
`for increased
`accommodate
`and other
`mobile device elements.
`examples of
`FIGS. 11A and 11B provide non-limiting
`altering a size of a combo coil module based on features of
`the mobile device in which the combo coil mobile is used.
`in the case in which the combo coil
`Referring to the figures,
`module is mounted in a mobile device having a battery pack
`of large size, a magnetic
`sheet
`is substantially
`that
`square,
`such as magnetic sheets 2b and 2c shown in FIGS. 11A and
`11B, may be formed to match a length of one side of the
`a side of the
`sized opposing antenna. For example,
`largest
`sheets 2b and/or 2c may correspond to the largest
`magnetic
`side of the opposing antenna 11 (Le., RL-I). The reason for
`matching the length of one side of the magnetic
`sheet with
`s