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`a2) United States Patent
`US 9,276,642 B2
`(10) Patent No.:
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` Shostak (45) Date of Patent: Mar.1, 2016
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`US009276642B2
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`(72)
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`Inventor:
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`(*) Notice:
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`(54) COMPUTING DEVICE HAVING MULTIPLE
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`CO-LOCATED ANTENNAS
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`(71) Applicant: GOOGLE TECHNOLOGY _
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`(us) LLC, MountainView, CA
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`Pavel A Shostak, Evanston, IL (US)
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`(73) Assignee: Google Technology Holdings LLC,
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`Mountain View, CA (US)
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`Subject to any disclaimer, the term ofthis
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`patent is extended or adjusted under 35
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`USS.C. 154(b) by 22 days.
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`(21) Appl. No.: 14/444,369
`Filed:
`Jul. 28, 2014
`(22)
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`oo.
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`Prior Publication Data
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`US 2015/0381239 Al
`Dec. 31, 2015
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`(65)
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`(58) Field of Classification Search
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`CPC we HO1F 38/14; HO1F 41/00; H02J 5/005;
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`H02J 7/025; H02J 17/00; H01Q 1/362;
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`AG1F 2250/0002; A61N 1/37229
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`See application file for complete search history.
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`References Cited
`U.S. PATENT DOCUMENTS
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`(56)
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`5,397,986 A *
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`2004/0004581 AIL
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`2014/0028111 AL*
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`2015/0130979 AL*
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`3/1995 Conway oie ONM5
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`1/2004 Jenwatanavet........ HOR
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`1/2014 Hansen ....eeecccccs HOLF 38/414
`307/104
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`5/2015 Huang ue HOIF 38/14
`348/333.01
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`es
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`cited by examiner
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`Primary Examiner — Sujatha Sharma
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`(74) Attorney, Agent, or Firm — Faegre Baker Daniels LLP
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`ABSTRACT
`(57)
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`A computing device (102) includes multiple antennas, one
`Related U.S. Application Data
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`antenna for wireless communication and another antenna for
`(60) Provisional application No. 62/017,297, filed on Jun.
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`wireless charging. Each antenna is one of multiple coils that
`26, 2014.
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`are co-locatedat a particular area of a housing of the comput-
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`ing device. These multiple coils can be configured in various
`Int. Cl.
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`(2006.01)
`different manners, and are configured such thata first of the
`HOLS 7/02
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`(2006.01)
`multiple coils has an outer periphery and an inner boundary.
`HO1Q 1/24
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`HO1Q 1/22 A second of the multiple coils includesafirst portion, a(2006.01)
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`HO1Q 7/06
`second portion, and a third portion. Thefirst portion of the
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`HO4B 3/00
`secondcoil is positioned aboutthe outer periphery ofthefirst
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`coil, the secondportion ofthe second coil is positioned within
`HO02T 7/02
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`(52) U.S. Cl.
`the inner boundary ofthefirst coil, and the third portion ofthe
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`CPC wee H04B 5/0037 (2013.01); HO1Q 1/2266
`second coil traverses the first coil and interconnects thefirst
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`(2013.01); HO1Q 1/243 (2013.01); HO1O 7/06
`and secondportions of the second coil.
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`(2013.01); H02J 7/025 (2013.01); HO4B
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`20 Claims, 11 Drawing Sheets
`5/0081 (2013.01)
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`(51)
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`SAMSUNG EXHIBIT 1006
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`Page 1 of 20
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`SAMSUNG EXHIBIT 1006
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`U.S. Patent
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`Mar.1, 2016
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`Sheet 1 of 11
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`US 9,276,642 B2
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`108
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`Computing Device 102
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`Wireless Communication System 104
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`Wireless
`Communication
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`Circuit
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`112
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`Wireless
`Communication
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`Antenna
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`114
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`Wireless Charging System 106
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`Wireless Charging
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`Circuit
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`116
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`Wireless Charging
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`Antenna
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`118
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`Power Storage
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`Component
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`Fic. 7
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`U.S. Patent
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`Mar.1, 2016
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`Sheet 2 of 11
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`US 9,276,642 B2
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`FIG. 2
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`Page 3 of 20
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`U.S. Patent
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`Mar.1, 2016
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`Sheet 3 of 11
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`US 9,276,642 B2
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`Mar.1, 2016
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`U.S. Patent
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`U.S. Patent
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`Mar.1, 2016
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`Sheet 10 of 11
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`US 9,276,642 B2
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`7— 1100
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`Provide a wireless charging coil
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`1102
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`1110
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`Provide a wireless communication coil
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`1104
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`Position a first portion of the wireless communication
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`coil about an outer periphery of the wireless
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`charging coil
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`1106
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`Position a second portion of the wireless
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`communication coil within an inner boundary of the
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`wireless charging coil
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`1108
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`Position a third portion of the wireless
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`communication coil to traverse the wireless charging
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`coil and interconnectthe first and second portions of
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`the wireless communication coil
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`Fic. 117
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`Page 11 of 20
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`U.S. Patent
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`Mar.1, 2016
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`Sheet 11 of 11
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`US 9,276,642 B2
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`Communication
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`Components
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`1202
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`Cellular
`Transceiver
`4212
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`a
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`WLAN
`Transceiver
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`4214
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`1218
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`Processor(s)
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`Output
`Components
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`Input Components
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`Device Interface
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`1216
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`Power Supply
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`FIG. 12
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`US 9,276,642 B2
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`1
`COMPUTING DEVICE HAVING MULTIPLE
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`CO-LOCATED ANTENNAS
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`RELATED APPLICATIONS
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`This application claimspriority to U.S. Provisional Patent
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`Application Ser. No. 62/017,297 filed on Jun. 26, 2014,
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`entitled “Portable Device with Different Antenna Systems
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`Co-Located at or Near a Housing Surface”, which is incor-
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`porated by reference herein in its entirety.
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`BACKGROUND
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`Astechnology has advanced, the functionality provided by
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`computing devices has increased. This functionality includes
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`different types of wireless functionality, such as allowing
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`computing devices to communicate with other devices wire-
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`lessly, allowing computing devices to wirelessly charge their
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`batteries, and so forth. To support this wireless functionality,
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`a computing device typically includes a different antenna for
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`each different type ofwireless functionality. Users oftentimes
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`desire to associate the same location of their computing
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`device, such as the central area of a back of the computing
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`device, with different wireless functionality. However, it can
`be difficult to include two different antennas in the same
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`location of a computing device.
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`BRIEF DESCRIPTION OF THE DRAWINGS
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`Wireless charging is an inductive charging technology that
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`utilizes an electromagnetic field to transfer energy between
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`devices. For example, an inductive charging device may form
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`an inductive coupling with a smartphone, tablet, or other
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`portable device to charge a battery of the portable device.
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`Similar to near field communication, wireless charging is
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`typically performed when the two devices are in close physi-
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`cal proximity of one another, typically less than 10 cm apart.
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`Using the techniques discussed herein, a computing device
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`includes multiple antennas—one for wireless communica-
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`tion and onefor wireless charging. Each antennais a coil that
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`is located at a particular area (e.g., a central area) of a housing
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`ofthe computing device. The antennasare referredto as being
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`co-located due to both antennas being located in the same
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`area. These multiple coils are configured suchthat a first coil
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`of the multiple coils has an outer periphery and an inner
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`boundary.A first portion of a second coilof the multiple coils
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`is positioned about the outer periphery of the first coil, a
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`second portion of the second coil is positioned within the
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`inner boundary of the first coil, and a third portion of the
`second coil traverses the first coil and interconnects the first
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`and secondportions of the second coil.
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`Using the techniques discussed herein, the multiple anten-
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`nas are co-located in the same area, improving the perfor-
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`manceof the functionality (e.g., wireless communication)
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`associated with one antenna while reducing performance
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`degradation of the functionality (e.g., wireless charging)
`associated with the other antenna. In one or more embodi-
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`ments, the two antennas are located in approximately a cen-
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`tral area of the housing of a computing device because users
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`are oftentimes accustomed to positioning their computing
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`device so that approximately the central area of the comput-
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`ing device is adjacentto the other device with which commu-
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`nication is to be performed or from which charging is to
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`performed. Furthermore, with many portable devices, the
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`front side of the device is dominated by a touch screen, and
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`thus the multiple antennas are co-located at or near the back
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`housing of the computing device.
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`FIG.1 illustrates an example computing device 102 having
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`multiple co-located antennas in accordance with one or more
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`embodiments. The computing device 102 can be any of a
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`variety of different types of devices, such as a laptop com-
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`puter, a cellular or other wireless phone, a tablet device, a
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`phablet device, a personaldigital assistant, an entertainment
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`device, an audio or video playback device, a personal navi-
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`gation device, a touch screen input device, a stylus or pen-
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`based input device, and so forth. The computing device 102
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`can take the form of a variety of different form factors, such as
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`bar, tablet, flip/clam, slider, rotator, wearable, and so forth.
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`The computing device 102 is oftentimes a portable or mobile
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`device that is designed to be easily movedto different loca-
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`tions. However, the computing device 102 can alternatively
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`be a device designed to be stationary, such as a desktop
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`computer, server computer, and so forth.
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`The computing device 102 includes a wireless communi-
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`cations system 104, a wireless charging system 106, and a
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`powerstorage component 108. The wireless communication
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`system 104 allows the computing device 102 to communicate
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`with one or more other devices using various wireless com-
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`munication protocols. In one or more embodiments, the wire-
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`less communication system 104 supports a near field com-
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`munication protocol. For example, wireless communication
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`protocols supported by the wireless communication system
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`104 can be protocols adhering to the ISO/IEC 18000-3 (2010)
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`standard, the ISO/IEC 18092 (2013) standard, the ECMA-
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`340 (2013) standard, the ISO/IEC 21481 (2012) standard, the
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`ISO/IEC 14443 (2008, 2010, 2011) standard, or the ECMA
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`Embodiments of a computing device having multiple co-
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`located antennasare described with referenceto the following
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`drawings. The same numbersare used throughout the draw-
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`ings to reference like features and components:
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`FIG. 1 illustrates an example computing device having
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`multiple co-located antennas in accordance with one or more
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`embodiments;
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`FIG.2 illustrates an example environmentin which acom-
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`puting device having multiple co-located antennas can be
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`used in accordance with one or more embodiments;
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`FIG.3 illustrates an example layout of an antenna appara-
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`tus in which multiple antennas are co-located in accordance
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`with one or more embodiments;
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`FIG. 4 illustrates a cross section view of an example
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`antenna apparatus in accordance with one or more embodi-
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`FIGS. 5, 6, 7, 8, 9, and 10 illustrate different example
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`antenna apparatus in which multiple antennas are co-located
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`in accordance with one or more embodiments;
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`FIG. 11 illustrates an example flowchart for providing a
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`computing device having multiple co-located antennas in
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`accordance with one or more embodiments; and
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`FIG. 12 illustrates an example electronic device that can
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`implement embodiments of the techniques discussed herein.
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`DETAILED DESCRIPTION
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`Acomputing device having multiple co-located antennasis
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`discussed herein. A computing device supports both wireless
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`communication (e.g., near field communication (NFC)) and
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`wireless charging (WC). Near field communicationis a wire-
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`less communication protocol for devices to communicate
`with one another. In order for two devices to communicate
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`with one another using near field communication, the two
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`devices typically must be in close physical proximity of one
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`another. Oftentimesusers utilize near field communication by
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`placing the devices in physical contact with each other.
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`352 (2013) standard. Alternatively, the wireless communica-
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`tion system 104 can support various other wireless commu-
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`nication protocols or standards.
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`The wireless charging system 106 implements inductive
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`charging technologythat utilizes an electromagnetic field to
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`wirelessly receive energy from an external power source. The
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`received energy is stored in power storage component 108.
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`The powerstorage component108 can be anyof a variety of
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`components capable of storing energy received by the wire-
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`less charging system 106. In one or more embodiments, the
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`powerstorage component 108is a battery (e.g., a lithium ion
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`battery, a lithtum polymer battery, a nickel metal hydride
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`battery, anickel cadmium battery, and so forth). Alternatively,
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`the power storage component108 can be other types of com-
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`ponents.
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`The wireless communication system 104 includes a wire-
`less communication circuit 112 and a wireless communica-
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`tion antenna 114. The wireless communication antenna 114 is
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`a coil that receives wireless signals communicated from one
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`or more other devices (not shown in FIG. 1) and sends wire-
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`less signals to one or more other devices (not shown in FIG.
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`1). The receiving and sending of wireless signals using the
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`wireless communication antenna 114 is managedbythe wire-
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`less communication circuit 112, allowing the wireless com-
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`munication circuit 112 to perform or otherwise facilitate
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`wireless communication (e.g., near field communication)
`with other devices.
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`The wireless charging system 106 includes a wireless
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`charging circuit 116 and a wireless charging antenna 118. The
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`wireless charging antenna 118 is a coil that receives energy
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`from an external power source (not shown in FIG. 1). The
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`wireless charging antenna 118 is co-located with the wireless
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`communication antenna 114, as discussed in more detail
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`below. The receiving of energy using the wireless charging
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`antenna 118 is managedby the wireless charging circuit 116,
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`which stores the received energy in the power storage com-
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`ponent 108 (e.g., recharging the battery of the computing
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`device 102).
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`FIG.2 illustrates an example environment 200 in which a
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`computing device 102 can be used in accordance with one or
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`more embodiments. The computing device 102 includes a
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`display 202 and an antenna apparatus 204. The display 202
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`can implement touchscreen functionality and can be config-
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`ured as any suitable type of display, such as an organic light-
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`emitting diode (OLED)display, active matrix OLED display,
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`liquid crystal display (LCD), in-plane shifting LCD, and so
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`on. The display 202 is situated on one side or surface of the
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`computing device 102 (the front of the computing device
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`102). The antenna apparatus 204 includes the wireless com-
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`munication antenna 114 and the wireless charging antenna
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`118 of FIG. 1. The antenna apparatus 204 is situated within
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`the housing of the computing device 102, andis situated at or
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`near surface of the opposite side of the computing device 102
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`(the back or rear of the computing device 102). The antenna
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`apparatus 204 is illustrated in FIG. 2 with dashed lines
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`because the antenna apparatus 204is situated within the hous-
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`ing of the computing device 102 andis typically not visible
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`from external to the housing of the computing device 102.
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`The antenna apparatus 204 is illustrated in FIG. 2 as being
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`situated in a central region ofthe rear surface of the comput-
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`ing device 102 (e.g., at approximately the center ofthe back of
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`the computing device 102). However, the antenna apparatus
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`204 can alternatively be situated in other areas of the com-
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`puting device 102. For example, the antenna apparatus 204
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`can be situated at or near the back surface of the computing
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`device 102 at approximately the top of the back of the com-
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`puting device 102, in one of the corners of the back of the
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`computing device 102, and so forth. Additionally, situations
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`can arise in which the antenna apparatus 204is situated at or
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`near a different surface of the computing device 102, such as
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`at or near the front of the computing device 102 (e.g., in
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`situations in which the display 202 does not encompass sub-
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`stantially all of the front of the computing device 102).
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`FIG.2 also illustrates a wireless charging base 212 resting
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`on a table 214, a wireless headset 216, and a wireless kiosk
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`218. The computing device 102 can be wirelessly charged by
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`placing the computing device 102 in close physical proximity
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`to the wireless charging base 212. For example, the user can
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`lay the computing device 102 on the wireless charging base
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`212 sothat the back ofthe computing device 102 is resting on
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`the top of the wireless charging 212.
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`The computing device can also wirelessly communicate
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`with the wireless headset 216 by placing the computing
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`device 102 in close physical proximity to the wireless headset
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`216. For example, the wireless headset 216 can bea Bluetooth
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`headset, and the user can position the wireless headset 216
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`next to (e.g., physically touching) the back of the computing
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`device 102 at approximately the antenna apparatus 204,
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`facilitating pairing of the wireless headset 216 with the com-
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`puting device 102 by allowing the computing device 102 and
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`the wireless headset 216 to wirelessly communicate with one
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`another using NFC.Similarly, the computing device can also
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`wirelessly communicate with the wireless kiosk 218 by plac-
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`ing the computing device 102 in close physical proximity to
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`the wireless kiosk 218. For example, the user can position the
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`computing device 102 so that the back of the computing
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`device 102 is next to (e.g., physically touching) the wireless
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`kiosk 218, allowing the computing device 102 and the wire-
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`less kiosk 218 to wirelessly communicate with one another
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`using NFC.
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`FIG.3 illustrates an example layout of an antenna appara-
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`tus 204 in which multiple antennas are co-located in accor-
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`dance with one or more embodiments. The example antenna
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`apparatus 204 includes two different antennas 302 and 304.
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`The antenna 302, illustrated with a vertical line pattern, is
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`substantially circular in shape and can bethe wireless charg-
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`ing antenna 118. The antenna 302 can be implemented in
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`various manners, such as a coil that is looped around a center
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`of the circular shape multiple times. Although the antenna
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`302is illustrated as being substantially circular
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`The antenna 302 includes an outer periphery 306, which
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`refersto the outer part ofthe circular shape(e.g., the perimeter
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`ofthe circular shape)that is the antenna 302. The antenna 302
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`also includes an inner boundary 308, whichrefers to the inner
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`part of the circular shape that is the antenna 302. Within the
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`inner boundary 308 is a center area 310 of the antenna appa-
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`ratus 204. The center area 310 forms a geometric shape(e.g.,
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`a substantially circular shape), and that geometric shape has a
`center that is also referred to as the center of the center area
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`310. For example, the center of the center area 310 can be the
`location 312.
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`The antenna 304, illustrated with a 45-degree angled line
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`pattern, can be the wireless communication antenna 114. The
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`antenna 304 is one continuous loop that includes multiple
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`portions 314, 316, and 318. The portion 314 is positioned
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`aboutthe outer periphery 306 ofthe antenna 302. The portion
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`314is illustrated as being substantially rectangular in shape,
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`althoughthe portion 314 can take other shapes, such as being
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`substantially circular in shape, being substantially elliptical
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`in shape, andso forth. The portion 314 can be implementedin
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`various manners, such as a coil that is looped around a center
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`of the rectangular shape multiple times. The portion 314
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`includesan outer periphery 320, whichrefers to the outer part
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`ofthe rectangular shape(e.g., the perimeter ofthe rectangular
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`shape) that is the portion 314. The portion 314 also includes
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`an inner boundary 322, which refers to the inner part of the
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`rectangular shape that is the portion 314. The antenna 302 is
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`situated within the inner boundary 322 of the portion 314.
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`The portion 316 is positioned within the inner boundary
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`308 ofthe antenna 302. The portion 316 is illustrated as being
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`substantially rectangular in shape, although the portion 316
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`can take other shapes, such as being substantially circular in
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`shape, being substantially elliptical in shape, and so forth.
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`The portion 316 can be implemented in various manners, for
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`example as acoil that is looped aroundthe location 312 one or
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`more times, or as a linear segment.
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`The portion 318 traverses the antenna 302, interconnecting
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`the portions 314 and 316 of the antenna 304. The portion 318
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`can be positioned on top ofthe antenna 302 (e.g., between the
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`antenna 302 and the back surface ofthe computing device 102
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`implementing the antenna apparatus 204), or can be posi-
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`tioned underneath the antenna 302 (e.g., so that the antenna
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`302 is situated between the portion 318 and the back surface
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`ofthe computing device 102 implementing the antenna appa-
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`ratus 204). A dielectric or shield material can be positioned
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`between the portion 318 and the antenna 302 to prevent the
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`portion 318 and antenna 302 from cominginto physical con-
`tact with one another.
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`The portion 318 is illustrated in FIG. 3 as traversing the
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`antenna 302 along the left-hand side of the antenna 302. It
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`should be noted thatthe illustrated location wherethe portion
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`318 traverses the antenna 302 is an example, and that the
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`antenna 302 can betraversedat other locations. For example,
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`the portion 318 can traverse the antenna 302 along the right-
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`handside ofthe antenna 302, along the top ofthe antenna 302,
`and so forth.
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`It should be noted that a separation is maintained between
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`the antenna 302 andthe portion 316 of the antenna 304, as
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`well as between the antenna 302 and the portion 314 of the
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`antenna 304. Maintaining this separation prevents the mag-
`netic fields of the antenna 302 and the antenna 304 from
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`interfering with one another by decreasing the mutual cou-
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`pling between the two coils. In one or more embodimentsthis
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`separation is at least approximately 2 millimeters, although
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`other amounts of separation can alternatively be used.
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`In one or more embodiments, a wireless chargingferrite is
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`positioned adjacent to the wireless charging antenna(e.g.,
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`antenna 302), for example underneath the wireless charging
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`antenna so that the wireless charging antenna is situated
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`between the wireless charging ferrite and a surface (e.g., the
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`back surface) of the computing device 102 implementing the
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`antenna apparatus 204. Additionally, in one or more embodi-
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`ments a wireless communicationferrite is positioned adjacent
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`to the wireless communication antenna(e.g., antenna 304),
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`for example underneath the wireless communication antenna
`so that
`the wireless communication antenna is situated
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`between the wireless communication ferrite and a surface
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`(e.g., the back surface) of the computing device 102 imple-
`55
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`menting the antenna apparatus 204. Theseferrites are made of
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`a ferrite shield material selected to shield the magneticfield of
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`the wireless communication system andthe wireless charging
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`system from nearby metallic materials that dissipatethefield
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`via formation of eddy currents. The ferrite shield material
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`may be comprised of sintered iron (Fe) in rigid or flexible
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`sheets, polymeric magnetic sheets, or other constructions.
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`The primary magnetic material or combination of materials
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`(for example, Fe, Ni, Mg, etc.) in the ferrite shield material
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`may be chosen to improve the shielding performance for a
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`particular operating frequency depending on which technol-
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`ogy is being considered (for example, wireless charging or
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`wireless communication).
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`40
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`6
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`In one or more embodiments, each antenna 302 and 304 is
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`acoil and the antenna apparatus 204 includes oneferrite(e.g.,
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`the wireless charging ferrite) designed for operation of the
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`antenna 302 positioned adjacent to the antenna 302, and
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`another ferrite (e.g.,
`the wireless communication ferrite)
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`designedfor operation ofthe antenna 304 positioned adjacent
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`to the portions 314 and 316 ofthe antenna 304. A ferrite being
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`designed for operation of a particular antenna 302 or 304
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`refers to the ferrite being designed or constructed to improve
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`shielding performancefor a particular operating frequency of
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`the antenna 302 or 304 that the ferrite is positioned adjacent
`to. Different materials are chosen for the different ferrites
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`based on which of the antenna 302 or 304theferrite is posi-
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`tioned adjacentto. Thus, the ferrite positioned adjacent to the
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`antenna 302is differentthan the ferrite positioned adjacent to
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`the portions 314 and 316 ofthe antenna 316. Since the portion
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`318 of the antenna 304 traverses the antenna 302, the ferrite
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`designed to improve shielding of the antenna 302 may be
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`positioned adjacentto the antenna 302 and the portion 318 of
`the antenna 304.
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`FIG. 4 illustrates a cross section view of an example
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`antenna apparatus in accordance with one or more embodi-
`ments. FIG. 4 as illustrated is a cross section view of the
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`antenna apparatus 204 of FIG. 3 along the line 324 of FIG. 3
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`in the direction indicated as 4. The antenna apparatus 204
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`illustrated in FIG. 4 includes a base layer 402, a ferrite layer
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`404, and a coillayer 406. In one or more embodiments, ofthe
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`three layers 402, 404, and 406, the base layer 402 is the layer
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`furthest from the housing ofthe computing device 102 and the
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`coil layer 406 is the layer closest to the housing of the com-
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`puting device 102 (e.g., the housing of the back of the com-
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`puting device 102). Thus, the ferrite layer 404 is positioned at
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`a side of the coil layer 406 opposite the housing of the com-
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`puting device 102 (e.g., the housing of the back of the com-
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`puting device 102).
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`The base layer 402 can be any of a variety of rigid or
`

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