Near-field RF charging pad with adaptive loading to efficiently charge an electronic device at any position on the pad
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02J-050/20
H02J-050/90
출원번호
US-0424552
(2017-02-03)
등록번호
US-10256677
(2019-04-09)
발명자
/ 주소
Hosseini, Alister
Leabman, Michael A.
출원인 / 주소
Energous Corporation
대리인 / 주소
Morgan, Lewis & Bockius LLP
인용정보
피인용 횟수 :
0인용 특허 :
195
초록▼
An example radio frequency (RF) charging pad includes: at least one processor for monitoring an amount of energy that is transferred from the RF charging pad to an RF receiver of an electronic device. The pad also includes: one or more transmitting antenna elements that are in communication with the
An example radio frequency (RF) charging pad includes: at least one processor for monitoring an amount of energy that is transferred from the RF charging pad to an RF receiver of an electronic device. The pad also includes: one or more transmitting antenna elements that are in communication with the processor for transmitting RF signals to the RF receiver. In some embodiments, each respective transmitting antenna element includes: (i) a conductive line forming a meandered line pattern; (ii) a first terminal of the conductive line for receiving current at a frequency controlled by the processor; and (iii) a second terminal coupled with a component that allows for modifying an impedance value at the second terminal. In some embodiments, the processor adaptively adjusts the frequency and/or the impedance value to optimize the amount of energy that is transferred from the one or more transmitting antenna elements to the RF receiver.
대표청구항▼
1. A radio frequency (RF) charging pad, comprising: at least one processor for monitoring an amount of energy that is transferred from the RF charging pad to an RF receiver of an electronic device; andone or more transmitting antenna elements that are in communication with the one or more processors
1. A radio frequency (RF) charging pad, comprising: at least one processor for monitoring an amount of energy that is transferred from the RF charging pad to an RF receiver of an electronic device; andone or more transmitting antenna elements that are in communication with the one or more processors for transmitting RF signals to the RF receiver of the electronic device, each respective transmitting antenna element including: a conductive line forming a meandered line pattern;a first terminal at a first end of the conductive line for receiving current that flows through the conductive line at a frequency controlled by the one or more processors; anda second terminal, distinct from the first terminal, at a second end of the conductive line, the second terminal coupled with a component that is controlled by the at least one processor and allows for modifying an impedance value at the second terminal,wherein the at least one processor is configured to adaptively adjust the frequency and/or the impedance value to optimize the amount of energy that is transferred from the one or more transmitting antenna elements to the RF receiver of the electronic device. 2. The RF charging pad of claim 1, wherein the electronic device is placed on top of a surface of the RF charging pad. 3. The RF charging pad of claim 1, wherein the component is a mechanical relay coupled with the second terminal for switching the second terminal between open and short states, and the impedance value is adaptively adjusted at the second terminal of the respective transmitting antenna element by opening or closing the mechanical relay to switch between an open or short circuit, respectively. 4. The RF charging pad of claim 1, wherein the component is an application-specific integrated circuit (ASIC), and the impedance value is adaptively adjusted by the ASIC along a range of values. 5. The RF charging pad of claim 1, wherein adaptively adjusting the frequency includes adjusting the frequency in predetermined increments. 6. The RF charging pad of claim 1, wherein the one or more processors are configured to adaptively adjust the frequency and/or impedance includes by adaptively adjusting the frequency and the impedance value to determine a maximum amount of energy that is transferred to the RF receiver of the electronic device, and once the maximum amount of energy is determined, transmitting the RF signals at the frequency and the impedance value that resulted in the maximum amount of energy transfer to the RF receiver. 7. The RF charging pad of claim 1, wherein the at least one processor monitors the amount of energy that is transferred to the RF receiver based at least in part on information received from the electronic device, the information identifying energy received at the RF receiver from the RF signals. 8. The RF charging pad of claim 7, wherein the information received from the electronic device identifying received energy is sent using a short-range communication protocol. 9. The RF charging pad of claim 8, wherein the short-range communication protocol is bluetooth low energy (BLE). 10. The RF charging pad of claim 1, wherein the one or more processors monitor the energy transferred based at least in part on an amount of energy that is detected at the second terminal. 11. A method of charging an electronic device through radio frequency (RF) power transmission, the method comprising: providing a charging pad that includes a transmitter comprising at least one RF antenna, wherein the at least one RF antenna comprises: a conductive line forming a meandered line pattern;a first terminal at a first end of the conductive line for receiving current that flows through the conductive line at a frequency controlled by the at least one processor; anda second terminal, distinct from the first terminal, at a second end of the conductive line, the second terminal coupled to a component controlled by the at least one processor, the component configured to modify an impedance value at the second terminal;transmitting, via the at least one RF antenna, one or more RF signals;monitoring an amount of energy that is transferred via the one or more RF signals from the at least one RF antenna to an RF receiver; andadaptively adjusting a characteristic of the transmitter to optimize the amount of energy that is transferred from the at least one RF antenna to the RF receiver, wherein the characteristic is selected from a group consisting of (i) a frequency of the one or more RF signals, (ii) an impedance of the transmitter, and (iii) a combination of (i) and (ii). 12. The method of claim 11, wherein the at least one RF antenna is part of an array of RF antennas, and the transmitter further comprises: a power input configured to be electrically coupled to a power source; andat least one processor configured to control at least one electrical signal sent to the at least one RF antenna. 13. The method of claim 12, wherein the at least one processor is also configured to control the frequency of the at least one electrical signal sent to the at least one RF antenna. 14. The method of claim 11, wherein the conductive line is disposed on or within a first antenna layer of a multi-layered substrate. 15. The method of claim 14, wherein a second RF antenna is disposed on or within a second antenna layer of the multi-layered substrate. 16. The method of claim 15, wherein a ground plane is disposed on or within a ground plane layer of the multi-layered substrate. 17. The method of claim 11, wherein the RF receiver includes at least one rectenna that converts the one or more RF signals into power to charge a device that is connected to the RF receiver. 18. The method of claim 11, further comprising, prior to the transmitting, locating the RF receiver within a near-field radio frequency distance to the at least one RF antenna.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (195)
Mittleman, Adam D.; Howarth, Richard P.; Seguin, Chad, Acoustic systems for electronic devices.
Ackermann, Friedrich; Ramey, Blaine Edward; Sabo, Robert P.; Augstein, Manfred, Apparatus and method to administer and manage an intelligent base unit for a handheld medical device.
Mickle, Marlin; Gorodetsky, Dimitry; Mats, Leonid; Neureuter, Lorenz; Mi, Minhong; Taylor, Carl; Emahizer, Chad, Apparatus for energizing a remote station and related method.
Hyde, Roderick A.; Ishikawa, Muriel Y.; Kare, Jordin T.; Nugent, Jr., Thomas J.; Weaver, Thomas A.; Wood, Jr., Lowell L.; Wood, Victoria Y. H., Beam power with beam redirection.
Hyde, Roderick A.; Ishikawa, Muriel Y.; Kare, Jordin T.; Nugent, Jr., Thomas J.; Weaver, Thomas A.; Wood, Jr., Lowell L.; Wood, Victoria Y. H., Beam power with multiple power zones.
Freed, Ian W.; Bezos, Jeffrey P.; Robison, Keela N., Charging an electronic device including traversing at least a portion of a path with an apparatus.
Ungari, Joseph; Wang, Winston; Buck, Robert; Kemery, Mike; Chow, Paulo S. T.; Giardini, Anthony; Goulart, Valerie; Ligh, Ming, Charging station that operates as an intermediary device between mobile devices and other devices.
Fitzsimmons George W. (Lynnwood WA) Lund ; Jr. Walter W. (Seattle WA) Nalos Ervin J. (Bellevue WA), Combined antenna-rectifier arrays for power distribution systems.
Choi, Jong Mu; Kim, Jae Hwan; Lee, Jin Woo; Jung, Bu Seop; Choi, Bo Kun; Lee, Yo Han; Jeon, Yong Joon, Device searching method and electronic device supporting the same.
Walley, John; Karaoguz, Jeyhan; Rofougaran, Ahmadreza (Reza); Seshadri, Nambirajan; Van Der Lee, Reinier, Device with integrated wireless power receiver configured to make a charging determination based on a level of battery life and charging efficiency.
Overhultz, Gary L.; Hardman, Gordon E.; Pyne, John W.; Strazdes, Edward J., Distributed RFID antenna array utilizing circular polarized helical antennas.
Ewing, Carrel W.; Auclair, Brian P.; Cleveland, Andrew J.; Maskaly, James P.; McGlumphy, Dennis W.; Bigler, Mark J., Electrical power distribution device having a current display.
Kritchman, Eliahu M.; Libinson, Alexander; Levi, Moshe; Menchik, Guy, Method and apparatus for monitoring electro-magnetic radiation power in solid freeform fabrication systems.
Mott, Charles J.; Nguyen, Trung T.; Griffin, II, Edmond E., Near-range microwave detection for frequency-modulation continuous-wave and stepped frequency radar systems.
Mitsuhashi Masato (Irvine CA) Cooper Allan J. (Bellvue WA) Waterman Michael S. (Culver City CA) Pevzner Pavel A. (State College PA), Oligoprobe designstation: a computerized method for designing optimal DNA probes.
Willis, N. Parker; Brisken, Axel F.; Cowan, Mark W.; Pare, Michael; Fowler, Robert; Brennan, James, Optimizing energy transmission in a leadless tissue stimulation system.
Kozakai, Osamu; Miyamoto, Takashi; Murayama, Yuji, Power feeding apparatus, power receiving apparatus, wireless power feeding system and method for wireless transfer of power.
Brady,David J.; Guenther,Bobby D.; Feller,Steve; Shankar,Mohan; Fang,Jian Shuen; Hao,Qi, Sensor system for identifying and tracking movements of multiple sources.
Rao, Raman K.; Rao, Sanjay K., System for seamless and secure networking of implantable medical devices, electronic patch devices and wearable devices.
Hyde, Roderick A.; Kare, Jordin T.; Tegreene, Clarence T.; Wood, Jr., Lowell L., Systems and methods for providing wireless power to a power-receiving device, and related power-receiving devices.
Bell, Douglas; Leabman, Michael, Systems and methods for selecting which power transmitter should deliver wireless power to a receiving device in a wireless power delivery network.
MacDonald ; Jr. James D. ; Hayes Gerard James ; Spall John Michael ; Marcinkiewicz Walter M., Termination contact for an antenna with a nickel-titanium radiating element.
Kirby, Miles Alexander Lyell; Konertz, Anne Katrin; Keating, Virginia Walker; Lauer, Craig; Mangan, Michael John, Tracking receiver devices with wireless power systems, apparatuses, and methods.
Zeine, Hatem; Alfarra, Anas; Mayes, Dale; El-Rukby, Fady; Mahmoud, Samy; Springer, John B.; Renneberg, Benjamin Todd; Shylendra, Prithvi; Johnson, Anthony L.; Williams, Douglas Wayne, Wireless charging with multiple power receiving facilities on a wireless device.
Doan, Chinh H.; Emami-Neyestanak, Sohrab; Marshall, John; Shung, Chuen-Shen; Williams, Tim Arthur; Brodersen, Robert W.; Gilbert, Jeffrey M.; Poon, Ada Shuk Yan, Wireless communication device using adaptive beamforming.
Masaoka, Shinya; Mito, Katsuhiko; Hirano, Akira; Okubo, Norihiro; Naito, Masaki; Takeuchi, Yasunori, Wireless power transfer system, transmission device, and controlling method of wireless power transfer system.
Kim, Nam Yun; Kwon, Sang Wook; Park, Yun Kwon, Wireless power transmission system, and method for controlling wireless power transmission and wireless power reception.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.