# US 8,541,974 B2 · Movable magnetically resonant antenna for wireless charging > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,541,974 B2 - Document ID: US8541974B2 - Status: Granted - Kind: B2 - Application number: 12/856,540 - Filed: 2010-08-13 - Published: 2011-03-17 - Granted: 2013-09-24 - Earliest claimed: 2009-09-17 - Assignees: QUALCOMM Incorporated - Applicants: Shahin Farahani - Inventors: Shahin Farahani - Web page: https://patentgrep.com/patent/US8541974B2 ## CPC - H01Q 1/248: {provided with an AC/DC converting device, e.g. rectennas} - H01Q 3/12: using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems - 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 - H02J 7/70: characterised by the mechanical construction - H02J 7/731: {specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence)} - H02J 50/12: of the resonant type - H02J 50/20: using microwaves or radio frequency waves - H02J 50/502: {the energy repeater being integrated together with the emitter or the receiver} - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H02J 50/90: involving detection or optimisation of position, e.g. alignment - H04B 5/22: Capacitive coupling - H04B 5/79: for data transfer in combination with power transfer - 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 - H04B: TRANSMISSION ## Abstract Exemplary embodiments are directed to wireless power. A method may include reorienting at least one transmit antenna to reduce orthogonality with a receive antenna of at least one chargeable electronic device in response to receiving the at least one electronic device in a holder. The method may further include wirelessly transferring power from the at least one transmit antenna to the receive antenna. ## Claims ### Claim 1 A wireless power charger, comprising: a retention device having a fixed base and configured to retain a chargeable device, the chargeable device comprising a receive antenna; and a deflection plate supported by the retention device and configured to support a transmit antenna, the deflection plate adjustable from a first position to a second position to reduce orthogonality between the transmit and the receive antenna. ### Claim 2 (depends on 1) The wireless power charger of claim 1, wherein the deflection plate is configured to mechanically deflect to change position. ### Claim 3 (depends on 1) The wireless power charger of claim 1, wherein the deflection plate pivots about an axis. ### Claim 4 (depends on 3) The wireless power charger of claim 3, wherein the deflection plate is configured to pivot to receive the chargeable device on a first side of the deflection plate and to receive a second chargeable device on a second side of the deflection plate. ### Claim 5 (depends on 1) The wireless power charger of claim 1, wherein the retention device is configured to impede movement of the deflection plate. ### Claim 6 (depends on 3) The wireless power charger of claim 3, wherein the axis is substantially symmetric within the container, and wherein the deflection plate substantially equally divides the retention device when the deflection plate is deflected. ### Claim 7 (depends on 3) The wireless power charger of claim 3, wherein the wireless power charger further comprises a second transmit antenna. ### Claim 8 (depends on 3) The wireless power charger of claim 3, wherein the axis is offset from a center of the deflection plate, and wherein the deflection plate is retained in a non-deflected position based on gravity. ### Claim 9 (depends on 1) The wireless power charger of claim 1, wherein the transmit antenna comprises a repeater antenna. ### Claim 10 (depends on 1) The wireless power charger of claim 1, wherein the retention device is configured to be placed within a passive container. ### Claim 11 (depends on 10) The wireless power charger of claim 10, wherein the passive container comprises a cup holder. ### Claim 12 (depends on 1) The wireless power charger of claim 1, wherein wireless power is transferred from the transmit antenna to the receive antenna. ### Claim 13 (depends on 1) The wireless power charger of claim 1, wherein a transmit power level of power to the transmit antenna is adjustable based upon a sensed load value. ### Claim 14 (depends on 1) The wireless power charger of claim 1, wherein the wireless power charger further comprises a container characterized by a first volume, and wherein the deflection plate is located within the container, and wherein the wireless power charger is configured to receive an object characterized by a second volume that is greater than or equal to the first volume. ### Claim 15 (depends on 1) The wireless power charger of claim 1, further comprising a cup holder, wherein the cup holder comprises the retention device. ### Claim 16 (depends on 1) The wireless power charger of claim 1, wherein the retention device is configured to enable movement of the deflection plate. ### Claim 17 (depends on 1) The wireless power charger of claim 1, wherein the wireless power is transferred using induction, and wherein the transmit antenna is configured to resonate at a frequency. ### Claim 18 A method for wireless power charging using a wireless power charger, comprising: adjusting a position of a deflection plate configured to support a transmit antenna, the deflection plate supported by a retention device, the retention device having a fixed base and configured to retain a chargeable device, from a first position to a second position to reduce orthogonality with a receive antenna of at least one chargeable electronic device; and wirelessly transferring power from the transmit antenna to the receive antenna. ### Claim 19 (depends on 18) The method of claim 18, wherein adjusting the deflection plate comprises pivoting the deflection plate about an axis. ### Claim 20 (depends on 18) The method of claim 18, further comprising impeding movement of the deflection plate using the retention device. ### Claim 21 (depends on 18) The method of claim 18, further comprising receiving the chargeable device on a first side of the deflection plate and receiving a second chargeable device on a second side of the deflection plate. ### Claim 22 (depends on 18) The method of claim 18, wherein the wireless power charger comprises a second transmit antenna, the method further comprising wirelessly transferring power using the second transmit antenna. ### Claim 23 (depends on 18) The method of claim 18, wherein the transmit antenna comprises a repeater antenna. ### Claim 24 (depends on 18) The method of claim 18, further comprising inserting the retention device into a passive container. ### Claim 25 (depends on 18) The method of claim 18, wherein wirelessly transferring power comprises wirelessly transferring power using induction at a resonant frequency of the transmit antenna. ### Claim 26 (depends on 18) The method of claim 18, further comprising receiving an object in a container characterized by a first volume, the container comprising the transmit antenna and the object characterized by a second volume that is greater than or equal to the first volume. ### Claim 27 (depends on 18) The method of claim 18, further comprising: sensing a load amount defined by a load of a wireless power charger; and adjusting a power level based upon the load amount. ### Claim 28 A wireless power charger, comprising: means for adjusting a position of a deflection plate configured to support a transmit antenna, the deflection plate supported by a retention device, the retention device having a fixed base and configured to retain a chargeable device, from a first position to a second position to reduce orthogonality with a receive antenna of at least one chargeable electronic device; and means for wirelessly transferring power from the at least one transmit antenna to the receive antenna. ### Claim 29 (depends on 28) The wireless power charger of claim 28, further comprising means for impeding movement of the deflection plate. ### Claim 30 (depends on 28) The wireless power charger of claim 28, further comprising means for receiving the chargeable device on a first side of the deflection plate and means for receiving a second chargeable device on a second side of the deflection plate. ### Claim 31 (depends on 28) The wireless power charger of claim 28, wherein the wireless power charger comprises a second transmit antenna, the wireless power charger further comprising means for wirelessly transferring power using the second transmit antenna. ### Claim 32 (depends on 28) The wireless power charger of claim 28, wherein the transmit antenna comprises a repeater antenna. ### Claim 33 (depends on 28) The wireless power charger of claim 28, further comprising means for inserting the retention device into a passive container. ### Claim 34 (depends on 28) The wireless power charger of claim 28, wherein wirelessly transferring power comprises means for wirelessly transferring power using induction at a resonant frequency of the transmit antenna. ### Claim 35 (depends on 28) The wireless power charger of claim 28, further comprising means for receiving an object in a container characterized by a first volume, wherein the deflection plate is located within the container, and wherein the object is characterized by a second volume that is greater than or equal to the first volume. ### Claim 36 (depends on 28) The wireless power charger of claim 28, further comprising: means for sensing a load amount defined by a load of a wireless power charger; and means for adjusting a power level based upon the load amount.