# US 9,520,917 B2 · Antenna configuration to facilitate near field coupling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,520,917 B2 - Document ID: US9520917B2 - Status: Granted - Kind: B2 - Application number: 13/977,041 - Filed: 2012-02-13 - Published: 2014-11-27 - Granted: 2016-12-13 - Earliest claimed: 2012-02-13 - Assignees: Intel Corporation - Applicants: Songnan Yang; Anand S. Konanur; Bin Xiao; Ulun Karacaoglu - Inventors: Songnan Yang; Anand S. Konanur; Bin Xiao; Ulun Karacaoglu - Web page: https://patentgrep.com/patent/US9520917B2 ## CPC - H04B 5/70: specially adapted for specific purposes - G06K 19/07779: {the inductive antenna being a coil} - G06K 19/0779: {the antenna being foldable or folded} - H01F 38/14: Inductive couplings - H01Q 1/2216: {used in interrogator/reader equipment} - H01Q 1/36: Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) - 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 - H01Q 7/08: Ferrite rod or like elongated core - H01Q 11/14: with parts bent, folded, shaped or screened or with phasing impedances, to obtain desired phase relation of radiation from selected sections of the antenna or to obtain desired polarisation effect (H01Q11/20 takes precedence) - H02J 50/10: using inductive coupling - H04B 5/26: using coils - H04B 5/263: {Multiple coils at either side} - H04B 5/266: {One coil at each side, e.g. with primary and secondary coils} - H04B 5/79: for data transfer in combination with power transfer - Y10T 29/49018: with other electrical component - H04B: TRANSMISSION - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Described herein are techniques related to near field coupling and wireless power transfers. A portable device may include a coil antenna that includes an upper loop and a lower loop to form a figure-eight arrangement. The figure-eight coil antenna arrangement is wrapped against top and bottom surfaces of a component to establish near field coupling through front side, top side, bottom side, or corner side of the portable device. Further, a flux guide may be placed between the coil antenna and the component to facilitate magnetic flux at the upper loop and the lower loop to induce current of the same phase during receive mode. During transmit mode, the flux guide facilitates the magnetic flux at the upper loop and the lower loop to generate magnetic fields of the same direction. ## Claims ### Claim 1 A portable device comprising: a housing having at least one component positioned within the housing, the at least one component defining top and bottom surfaces; a continuous loop of coil antenna that includes an upper loop and a lower loop to form a figure-eight arrangement, the upper loop includes an opposite sense of rotation against the lower loop, wherein the coil antenna is wrapped to the top and bottom surfaces of the at least one component; and a flux guide installed between the component and the coil antenna, the flux guide at receive mode facilitates magnetic flux at the upper loop and the lower loop to induce current of the same phase, the flux guide at transmit mode facilitates the magnetic flux at the upper loop and the lower loop to generate magnetic fields of the same direction. ### Claim 2 (depends on 1) The portable device as recited in claim 1, wherein the coil antenna includes the figure-eight arrangement that is installed at an edge of a screen, or at an edge of a base of the portable device. ### Claim 3 (depends on 1) The portable device as recited in claim 1, wherein the coil antenna includes multiple coils to form the figure-eight arrangement. ### Claim 4 (depends on 1) The portable device as recited in claim 1, wherein the coil antenna includes the figure-eight arrangement that is wrapped around a corner of a base, or a corner of a screen of the portable device to read through front side, top side, bottom side, right side, or corner side of the portable device in tablet mode. ### Claim 5 (depends on 1) The portable device as recited in claim 1, wherein the coil antenna includes the figure-eight arrangement that is installed at an edge of a base, or at an edge of a screen of the portable device to read through top and bottom side in tablet mode. ### Claim 6 (depends on 1) The portable device as recited in claim 1, wherein the coil antenna includes the figure-eight arrangement that is installed at an edge or corner of a base, or at an edge or corner of a screen of the portable device to read through front and back side of the screen in clamshell mode. ### Claim 7 (depends on 1) The portable device as recited in claim 1, wherein the flux guide includes a ferrite material that captures and facilitates the magnetic flux at a receiving loop to penetrate and exit at the lower loop or the upper loop during the receive mode. ### Claim 8 (depends on 1) The portable device as recited in claim 1, wherein the flux guide during the receive mode captures and facilitates the magnetic flux that induces a current at a receiving loop in a counter-clockwise direction, wherein the facilitated magnetic flux penetrates and induces another current at the lower loop or the upper loop in a clockwise direction. ### Claim 9 (depends on 1) The portable device as recited in claim 1, wherein the flux guide includes both ends that are inserted into slots that are located at the upper loop and the lower loop of the coil antenna to receive incoming magnetic fields during the receive mode, wherein both ends of the flux guide are located on top of the component and the same side of the coil antenna, wherein a portion of the flux guide defined by a plane connecting the slots are located on top of the component on the other side of the coil antenna. ### Claim 10 (depends on 1) The portable device as recited in claim 1, wherein the portable device is selected from one of a mobile phone, a cellular phone, a smartphone, a personal digital assistant, a tablet computer, a netbook, a notebook computer, a laptop computer, a multimedia playback device, a digital music player, a digital video player, a navigational device, and a digital camera. ### Claim 11 A method of manufacturing a device to establish near field coupling comprising: means for establishing a near field coupling at the device through a continuous loop of coil antenna forming a figure-eight arrangement, which includes an upper loop and a lower loop, the upper loop includes an opposite sense of rotation against the lower loop; means for receiving incoming magnetic fields at receive mode through a flux guide that is installed between the coil antenna and at least one component that defines top and bottom surfaces, the flux guide facilitates magnetic flux at the upper loop and the lower loop to induce current of the same phase during the receive mode, the flux guide facilitates the magnetic flux at the upper loop and the lower loop to generate magnetic fields of the same direction at transmit mode. ### Claim 12 (depends on 11) The method as recited in claim 11, wherein the means for establishing near field coupling includes the coil antenna, which includes the figure-eight arrangement that is installed at an edge or corner of a screen, or at an edge or corner of a base of the device. ### Claim 13 (depends on 11) The method as recited in claim 11, wherein the means for establishing near field coupling includes the coil antenna that includes multiple coils to form the figure-eight arrangement. ### Claim 14 (depends on 11) The method as recited in claim 11, wherein establishing near field coupling includes the figure-eight arrangement coil antenna that is wrapped around a corner of a base, or a corner of a screen of the device to read through front side, top side, bottom side, right side, or corner side of the device in tablet mode. ### Claim 15 (depends on 11) The method as recited in claim 11, wherein the coil antenna includes the figure-eight arrangement that is installed at an edge of a base, or at an edge of a screen of the device to read through top and bottom side in tablet mode. ### Claim 16 (depends on 11) The portable device as recited in claim 11, wherein the coil antenna includes the figure-eight arrangement that is installed at an edge or corner of a base, or at an edge or corner of a screen of the device to read through front and back side of the screen in clamshell mode. ### Claim 17 (depends on 11) The portable device as recited in claim 11, wherein the flux guide includes a ferrite material that captures and facilitates the magnetic flux at a receiving loop to penetrate and exit at the lower loop or the upper loop during the receive mode. ### Claim 18 (depends on 11) The portable device as recited in claim 11, wherein the flux guide during the receive mode captures and facilitates the magnetic flux that induces a current at a receiving loop in a counter-clockwise direction, wherein the facilitated magnetic flux penetrates and induces another current at the lower loop or the upper loop in a clockwise direction. ### Claim 19 (depends on 11) The method as recited in claim 11, further comprising means for inserting both ends of the flux guide into slots located at the upper loop and the lower loop of the coil antenna to receive the incoming magnetic fields during the receive mode, wherein both ends of the flux guide are located on top of the component and the same side of the coil antenna, wherein a portion of the flux guide defined by a plane connecting the slots are located on top of the component and on the other side of the coil antenna. ### Claim 20 A device comprising: a continuous loop of coil antenna that includes an upper loop and a lower loop to form a figure-eight arrangement, the upper loop includes an opposite sense of rotation against the lower loop, wherein the coil antenna is wrapped to top and bottom surfaces defined by at least one component; and a flux guide installed between the component and the coil antenna, the flux guide at receive mode facilitates magnetic flux at the upper loop and the lower loop to induce current of the same phase, the flux guide at transmit mode facilitates the magnetic flux at the upper loop and the lower loop to generate magnetic fields of the same direction. ### Claim 21 (depends on 20) The device as recited in claim 20, wherein the coil antenna includes the figure-eight arrangement that is installed at an edge or corner of a screen, or at an edge or corner of a base of the device. ### Claim 22 (depends on 20) The device as recited in claim 20, wherein the coil antenna includes multiple coils to form the figure-eight arrangement. ### Claim 23 (depends on 20) The device as recited in claim 20, wherein the coil antenna includes the figure-eight arrangement that is wrapped around a corner of a base, or a corner of a screen of the device to read through front side, top side, bottom side, right side, or corner side of the device in a tablet mode. ### Claim 24 (depends on 20) The device as recited in claim 20, wherein the coil antenna includes the figure-eight arrangement that is installed at an edge of a base, or at an edge of a screen of the device to read through top and bottom side in tablet mode. ### Claim 25 (depends on 20) The portable device as recited in claim 20, wherein the coil antenna includes the figure-eight arrangement that is installed at an edge or corner of a base, or at an edge or corner of a screen of the device to read through front and back side of the screen in clamshell mode. ### Claim 26 (depends on 20) The portable device as recited in claim 20, wherein the flux guide includes a ferrite material that captures and facilitates the magnetic flux at a receiving loop to penetrate and exit at the lower loop or the upper loop during the receive mode. ### Claim 27 (depends on 20) The device as recited in claim 20, wherein the flux guide during the receive mode captures and facilitates the magnetic flux that induces a current at a receiving loop in a counter-clockwise direction, wherein the facilitated magnetic flux penetrates and induces another current at the lower loop or the upper loop in a clockwise direction. ### Claim 28 (depends on 20) The device as recited in claim 20, wherein the flux guide includes both ends that are inserted into slots that are located at the upper loop and the lower loop of the coil antenna to receive incoming magnetic fields during the receive mode, wherein both ends of the flux guide are located on top of the component and the same side of the coil antenna, wherein a portion of the flux guide defined by a plane connecting the slots are located on top of the component but on the other side of the coil antenna. ### Claim 29 (depends on 20) The device as recited in claim 20, wherein the device is selected from one of a mobile phone, a cellular phone, a smartphone, a personal digital assistant, a tablet computer, a netbook, a notebook computer, a laptop computer, a multimedia playback device, a digital music player, a digital video player, a navigational device, and a digital camera.