WO2024136374A1 - Dispositif électronique de réception d'énergie sans fil et son procédé de fonctionnement - Google Patents

Dispositif électronique de réception d'énergie sans fil et son procédé de fonctionnement Download PDF

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Publication number
WO2024136374A1
WO2024136374A1 PCT/KR2023/020891 KR2023020891W WO2024136374A1 WO 2024136374 A1 WO2024136374 A1 WO 2024136374A1 KR 2023020891 W KR2023020891 W KR 2023020891W WO 2024136374 A1 WO2024136374 A1 WO 2024136374A1
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WIPO (PCT)
Prior art keywords
antenna
power
rectifier
switch
electronic device
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PCT/KR2023/020891
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English (en)
Korean (ko)
Inventor
이종민
여성구
고민범
김선률
김준홍
신재선
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삼성전자 주식회사
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Publication of WO2024136374A1 publication Critical patent/WO2024136374A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves

Definitions

  • One embodiment of the present invention relates to an electronic device that wirelessly receives power and a method of operating the same.
  • Wireless power transmission includes magnetic induction, magnetic resonance, and electromagnetic wave methods.
  • the electromagnetic wave method has the advantage of being more advantageous than other methods for transmitting power over long distances.
  • An electronic device 150 that receives power wirelessly includes a first antenna 410, a second antenna 420, and a two-way switch 415 disposed between the first antenna and the second antenna. , and may include a first rectifier 411 connected to the first antenna and a second rectifier 421 connected to the second antenna.
  • the two-way switch when power greater than the reference power of the first rectifier is applied to the first antenna, the two-way switch is turned on and power greater than the reference power is distributed to the first rectifier and the second rectifier. It can be characterized as being.
  • a method of operating the electronic device 150 that wirelessly receives power may include receiving power through the first antenna 410 and the second antenna 420.
  • a method of operating the electronic device according to an embodiment includes the arrangement between the first antenna and the second antenna when power greater than the reference power of the first rectifier 411 connected to the first antenna is applied to the first antenna. This may include an operation of turning on a bidirectional switch to distribute power greater than the reference power to the first rectifier and the second rectifier 421 connected to the second antenna.
  • Figure 1 shows a conceptual diagram of a wireless power transmission system according to an embodiment.
  • Figure 2 shows a block diagram of a wireless power transmission device and an electronic device according to an embodiment.
  • FIGS. 3A, 3B, and 3C are diagrams for explaining a method in which an electronic device receives an RF wave using beam forming technology, according to an embodiment.
  • FIG. 4 is a diagram of an antenna array including a plurality of patch antennas and a plurality of two-way switches disposed between the plurality of patch antennas according to an embodiment.
  • FIG. 5 is a flow chart illustrating a method in which an electronic device according to an embodiment provides power exceeding the reference power among the first power obtained from the first patch antenna to a second rectifier corresponding to the second patch antenna. am.
  • FIG. 6 is a graph illustrating a method in which an electronic device according to an embodiment provides power exceeding the reference power among the first power obtained from the first patch antenna to a second rectifier corresponding to the second patch antenna. .
  • Figure 7 is a diagram of a two-way switch disposed between a first patch antenna and a second patch antenna according to an embodiment.
  • FIG. 8A is a diagram of a two-way switch disposed between a first patch antenna and a second patch antenna according to an embodiment.
  • FIG. 8B is a table for explaining a power distribution operation according to on/off of a two-way switch disposed between the first patch antenna and the second patch antenna according to an embodiment.
  • FIG. 9A is a diagram of a two-way switch disposed between a first patch antenna and a second patch antenna according to an embodiment.
  • FIG. 9B is a flow chart to explain how a controller controls a two-way switch disposed between a first patch antenna and a second patch antenna, according to an embodiment.
  • Figure 10 is a graph showing power efficiency according to impedance according to one embodiment.
  • a component e.g., a first
  • another component e.g., second
  • a device configured to may mean that the device is “capable of” working with other devices or components.
  • processor configured (or set) to perform A, B, and C refers to a processor dedicated to performing the operations (e.g., an embedded processor), or by executing one or more software programs stored on a memory device.
  • processor may refer to a general-purpose processor (e.g., CPU or application processor) capable of performing the corresponding operations.
  • Wireless power transmission devices or electronic devices include, for example, smartphones, tablet PCs, mobile phones, video phones, e-book readers, desktop PCs, laptop PCs, netbook computers, workstations, It may include at least one of a server, PDA, portable multimedia player (PMP), MP3 player, medical device, camera, or wearable device.
  • Wearable devices can be accessory (e.g. watches, rings, bracelets, anklets, necklaces, glasses, contact lenses) or head-mounted-device (HMD), integrated into fabric or clothing (e.g. electronic clothing), It may include at least one of a body-attached circuit (e.g., skin pad) or a bioimplantable circuit.
  • a wireless power transmission device or electronic device may include, for example, a television, a digital video disk (DVD) player, an audio device, a refrigerator, an air conditioner, a vacuum cleaner, an oven, a microwave oven, a washing machine, an air purifier, a set-top box, It may include at least one of a home automation control panel, a security control panel, a media box, a game console, an electronic dictionary, an electronic key, a camcorder, or an electronic picture frame.
  • DVD digital video disk
  • the wireless power transmission device or electronic device may be used in various medical devices (e.g., various portable medical measurement devices (blood sugar meter, heart rate meter, blood pressure meter, or body temperature meter, etc.), magnetic resonance angiography (MRA), MRI ( magnetic resonance imaging (CT), computed tomography (CT), radiography, ultrasound, etc.), navigation devices, global navigation satellite system (GNSS), event data recorder (EDR), flight data recorder (FDR), automotive infotainment devices, marine electronic equipment (e.g.
  • various portable medical measurement devices blood sugar meter, heart rate meter, blood pressure meter, or body temperature meter, etc.
  • MRA magnetic resonance angiography
  • MRI magnetic resonance imaging
  • CT computed tomography
  • radiography ultrasound
  • navigation devices e.g., global navigation satellite system (GNSS), event data recorder (EDR), flight data recorder (FDR), automotive infotainment devices, marine electronic equipment (e.g.
  • the wireless power transmission device or electronic device may be a piece of furniture, a building/structure or a vehicle, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (e.g.
  • a wireless power transmission device or electronic device may be flexible, or may be a combination of two or more of the various devices described above.
  • the wireless power transmission device or electronic device according to the embodiments of this document is not limited to the above-described devices.
  • the term user may refer to a person using an electronic device, a wireless power transmission device, or a device using an electronic device (e.g., an artificial intelligence electronic device).
  • Figure 1 shows a conceptual diagram of a wireless power transmission system according to an embodiment.
  • the wireless power transmission device 100 can wirelessly transmit power to at least one electronic device 150 and 160.
  • the wireless power transmission device 100 may include a plurality of patch antennas 111 to 126.
  • Each of the patch antennas 111 to 126 is not limited as long as it is an antenna capable of generating RF waves.
  • At least one of the amplitude or phase of the RF wave generated by the patch antennas 111 to 126 may be adjusted by the wireless power transmission device 100.
  • the RF wave generated by each of the patch antennas 111 to 126 will be called a sub-RF wave.
  • the wireless power transmission apparatus 100 may adjust at least one of the amplitude or phase of each sub-RF wave generated from the patch antennas 111 to 126.
  • Sub-RF waves can interfere with each other. For example, at one point, sub-RF waves may constructively interfere with each other, and at another point, sub-RF waves may destructively interfere with each other.
  • the wireless power transmission device 100 according to an embodiment is configured to each sub-RF wave generated by the patch antennas 111 to 126 so that the sub-RF waves can constructively interfere with each other at the first point (x1, y1, z1). At least one of the amplitude or phase can be adjusted.
  • the wireless power transmission device 100 may adjust at least one of the amplitude or phase of each sub-RF wave by adjusting at least one of the phase or amplitude of the electrical signals input to each of the patch antennas 111 to 126. .
  • the wireless power transmission device 100 may determine that the electronic device 150 is located at the first point (x1, y1, z1).
  • the location of the electronic device 150 may be, for example, a point where the antenna for receiving power of the electronic device 150 is located.
  • the wireless power transmission device 100 may determine the location of the electronic device 150 in various ways. In order for the electronic device 150 to wirelessly receive power with high transmission efficiency, sub-RF waves must constructively interfere at the first point (x1, y1, z1). Accordingly, the wireless power transmission apparatus 100 may control the patch antennas 111 to 126 so that sub-RF waves constructively interfere with each other at the first point (x1, y1, z1).
  • controlling the patch antennas 111 to 126 means controlling the size of the electrical signal input to the patch antennas 111 to 126 or the phase of the signal input to the patch antennas 111 to 126. It may mean controlling (or delay).
  • beam forming a technology that controls RF waves to constructively interfere at specific points.
  • various beam forming methods may be used, such as those disclosed in US Patent Publication No. 2016/0099611, US Patent Publication No. 2016/0099755, US Patent Publication No. 2016/0100124, etc.
  • the RF wave 130 formed by the interference of sub-RF waves may have maximum amplitude at the first point (x1, y1, z1), and accordingly, the electronic device 150 can generate wireless power with high efficiency. You can receive it.
  • the wireless power transmission device 100 may detect that the electronic device 160 is placed at the second point (x2, y2, z2).
  • the wireless power transmission device 100 may control the patch antennas 111 to 126 so that sub-RF waves cause constructive interference at the second point (x2, y2, z2) in order to charge the electronic device 160.
  • the RF wave 131 formed by the sub-RF waves can have maximum amplitude at the second point (x2, y2, z2), and the electronic device 160 can receive wireless power with high transmission efficiency. You can.
  • the electronic device 150 may be placed relatively on the right side.
  • the wireless power transmission apparatus 100 may apply a relatively larger delay to sub-RF waves formed from patch antennas (eg, 114, 118, 122, and 126) disposed relatively on the right side. That is, after the sub-RF waves formed from the patch antennas (e.g., 111, 115, 119, 123) arranged relatively on the left are first formed, after a predetermined time, the patch antennas arranged relatively on the right (e.g., 114,118,122,126), a sub-RF wave may be generated. Accordingly, sub-RF waves may meet simultaneously at a relatively right point, that is, sub-RF waves may constructively interfere at a relatively right point.
  • the wireless power transmission device 100 uses patch antennas on the left (e.g., 111, 115, 119, 123) and patch antennas on the right (e.g., 114, 118, 122, 126). Substantially the same delay can be applied to .
  • the wireless power transmission device 100 connects the patch antennas on the left side (e.g., 111, 115, 119, 123) to the patch antennas on the right side (e.g., 114, 118, 122, 126). A larger delay can be applied.
  • the wireless power transmission device 100 may apply sub-RF waves to all of the patch antennas 111 to 126 substantially simultaneously and perform beam-forming by adjusting the phase corresponding to the above-described delay. It can also be done.
  • the wireless power transmission device 100 determines the positions of the electronic devices 150 and 160 and causes sub-RF waves to cause constructive interference at the determined positions, thereby performing wireless charging with high transmission efficiency.
  • Figure 2 shows a block diagram of a wireless power transmission device and an electronic device according to an embodiment.
  • the wireless power transmission device 100 may include a power source 201, an antenna array 210 for power transmission, a processor 220, a memory 230, and a communication circuit 240.
  • the electronic device 150 is not limited as long as it is a device that receives power wirelessly, and includes an antenna array for receiving power 251, a rectifier 252, a converter 253, a charger 254, and a processor 255. , memory 256, and communication circuit 257.
  • the power source 201 may provide power for transmission to the antenna array 210 for power transmission.
  • the power source 201 may provide, for example, direct current power.
  • an inverter (not shown) that converts direct current power into alternating current power and transmits it to the antenna array 210 for power transmission is wireless. It may be further included in the power transmission device 100. Meanwhile, in another embodiment, the power source 201 may provide alternating current power to the antenna array 210 for power transmission.
  • the antenna array 210 for power transmission may include a plurality of patch antennas. For example, a plurality of patch antennas as shown in FIG. 1 may be included in the antenna array 210 for power transmission. There are no restrictions on the number or arrangement of patch antennas.
  • the power transmission antenna array 210 may form an RF wave using power provided from the power source 301.
  • the antenna array 210 for power transmission may form an RF wave in a specific direction according to the control of the processor 220.
  • forming an RF wave in a specific direction may mean controlling at least one of the amplitude or phase of the sub-RF waves at one point in a specific direction so that the sub-RF waves cause constructive interference.
  • the processor 220 controls an adjustment circuit (not shown) including at least one of the phase or amplitude connected to the antenna array 210 for power transmission, thereby adjusting at least one of the amplitude or phase of the sub-RF waves.
  • the regulation circuit may include a phase shifter, attenuator, or amplifier.
  • the adjustment circuit may include an I/Q signal generation circuit and an I/Q signal amplifier, and the detailed configuration of the adjustment circuit will be described in more detail later.
  • the processor 220 controls an adjustment circuit (not shown) to adjust at least one of the phase or amplitude of the electrical signal input to each of the plurality of patch antennas included in the power transmission antenna array 210, At least one of the amplitude or phase of RF waves can be controlled.
  • the power transmission antenna array 210 is for power transmission and may also be called a power transmission antenna.
  • the processor 220 may determine the direction in which the electronic device 150 is located and determine the direction in which the RF wave is formed based at least on the determined direction. That is, the processor 220 uses the patch antennas (or coordination circuit (or coordination circuit) of the power transmission antenna array 210 to generate sub-RF waves so that the sub-RF waves cause constructive interference at at least one point in the determined direction. (not shown)) can be controlled. For example, the processor 220 may control at least one of the amplitude or phase of the sub-RF wave generated from each of the patch antennas by controlling the patch antennas or an adjustment circuit connected to the patch antennas.
  • the processor 220 may determine the beam width of the RF wave formed from the antenna array 210 for power transmission based at least on information included in the communication signal 260.
  • the processor 220 may determine the number of patch antennas that share at least one adjustment degree of phase or amplitude in response to the determined beam width.
  • the processor 220 controls the antenna array 210 for power transmission based at least on the direction of the electronic device 150 and the determined beam width, thereby forming an RF wave having a beam width determined in the direction of the electronic device 150. You can. Meanwhile, the processor 220 may identify the electronic device 150 using information in the communication signal 260.
  • Communication signal 260 may include a unique identifier or unique address of the electronic device.
  • the communication circuit 240 may process the communication signal 260 and provide information to the processor 220.
  • the communication circuit 240 and communication antennas 241, 242, and 243 can be manufactured based on at least various communication methods such as WiFi (wireless fidelity), Bluetooth, Zig-bee, and BLE (Bluetooth Low Energy). , there are no restrictions on the type of communication method.
  • the communication frequency used by the communication circuits 240 and 258 e.g., a frequency band including 2.4 GHz in the case of Bluetooth
  • the communication frequency used by the antenna array 210 for power transmission e.g., a frequency band including 5.8 GHz.
  • the communication signal 260 may include rated power information of the electronic device 150, and the processor 220 may operate based on at least one of the unique identifier, unique address, and rated power information of the electronic device 150.
  • the processor 220 may include one or more of a central processing unit (CPU), an application processor (AP), or a communication processor (CP), and may include a microcontroller. It may be implemented as a unit (micro controller unit) or mini computer.
  • the communication signal 260 is a process of the wireless power transmission device 100 identifying the electronic device 150, a process of allowing power transmission to the electronic device 150, and information related to received power to the electronic device 150. It can also be used in the request process, the process of receiving received power-related information from the electronic device 150, etc. That is, the communication signal 360 can be used in a subscription, command, or request process between the wireless power transmission device 100 and the electronic device 150.
  • the processor 220 may control the power transmission antenna array 210 (or a connected coordination circuit) to form the RF wave 211 in the determined direction of the electronic device 150.
  • the processor 220 may form an RF wave for detection and later determine the distance to the electronic device 150 using another communication signal received as feedback. Accordingly, the processor 220 can determine both the direction of the electronic device 150 and the distance to the electronic device 150, and ultimately determine the location of the electronic device 150.
  • the processor 220 may control the patch antenna so that sub-RF waves generated by the patch antennas at the location of the electronic device 150 cause constructive interference. Accordingly, the RF wave 211 can be transmitted to the antenna array 251 for power reception with relatively high transmission efficiency.
  • the antenna array 251 for receiving power has no limitations as long as it is implemented with antennas capable of receiving RF waves.
  • the antenna array 251 for receiving power may be implemented in the form of an array including a plurality of patch antennas.
  • the alternating current power received from the antenna array 251 for receiving power may be rectified into direct current power by the rectifier 252.
  • the converter 253 can convert direct current power into a required voltage and provide it to the charger 254.
  • the charger 254 can charge a battery (not shown). Meanwhile, although not shown, the converter 253 may provide the converted power to a power management integrated circuit (PMIC) (not shown), which supplies power to various hardware of the electronic device 150. You can also provide it.
  • PMIC power management integrated circuit
  • the processor 255 may control the overall operation of the electronic device. Meanwhile, the processor 255 may monitor the voltage at the output terminal of the rectifier 252. For example, a voltmeter connected to the output terminal of the rectifier 252 may be further included in the electronic device 150, and the processor 255 may receive a voltage value from the voltmeter and monitor the voltage at the output terminal of the rectifier 252. there is. The processor 255 may provide information including the voltage value of the output terminal of the rectifier 252 to the communication circuit 257.
  • the charger, converter, and PMIC may be implemented with different hardware, but at least two elements may be integrated into one hardware.
  • the voltmeter can be implemented in various forms, such as an electro dynamic instrument voltmeter, an electrostatic voltmeter, and a digital voltmeter, and there is no limit to the types.
  • the communication circuit 257 may transmit a communication signal including information related to received power.
  • the received power-related information may be information related to the magnitude of received power, such as the voltage at the output terminal of the rectifier 252, and may include the current at the output terminal of the rectifier 252.
  • an ammeter capable of measuring the current at the output terminal of the rectifier 252 may be further included in the electronic device 150.
  • Ammeters can be implemented in various forms such as direct current ammeters, alternating current ammeters, and digital ammeters, and there is no limit to the types.
  • the location for measuring information related to received power is not limited to the output terminal or input terminal of the rectifier 252, as well as any point of the electronic device 150.
  • the processor 255 may transmit a communication signal 260 including identification information of the electronic device 150.
  • the memory 256 may store programs or algorithms that can control various hardware of the electronic device 150.
  • FIGS. 3A to 3C are diagrams for explaining a method in which an electronic device receives an RF wave using beam forming technology, according to an embodiment.
  • the antenna array 300 for receiving power may include a plurality of antennas 311 to 318.
  • the plurality of antennas 311 to 318 may be implemented as patch antennas (hereinafter, plural patch antennas).
  • the plurality of antennas 311 to 318 may be arranged in an array form.
  • the antennas 311 to 318 shown in FIG. 3A are merely examples, and the type, shape, number, or arrangement of the antennas may not be limited thereto.
  • the wireless power transmission device 100 transmits the RF wave 330 or 340 of the first beam width (w1) or the second beam width (w2) formed by beam forming to the electronic device 150. can be transmitted to.
  • the wireless power transmission device 100 can adjust the beam width of the RF wave.
  • the beam width may be adjusted based on the distance d between the wireless power transmission device 100 and the electronic device 150.
  • the wireless power transmission device 100 may adjust the beam width of the RF wave from the first beam width (w1) to the second beam width (w2) that is wider than the first beam width (w1).
  • the wireless power transmission device 100 may adjust the beam width of the RF wave from the second beam width (w2) to the first beam width (w1).
  • the antenna array 300 for receiving power transmits the RF wave 330 of the first beam width w1 formed by the wireless power transmission device 100 through a plurality of patch antennas 311 to 318. ) can receive at least part of.
  • the RF wave 330 may be transmitted using an arbitrary (fixed or variable) frequency f.
  • the size (A) of the antenna array 300 for receiving power, the size (d1) of the patch antenna, and the distance (d2) between the patch antennas may be determined.
  • d1 may be 1/f*0.5
  • d2 may be 1/f*0.7.
  • the antenna array 300 for receiving power may receive at least a portion of the RF wave 330.
  • the power of the RF wave 330 may be concentrated from a point where the amplitude (w) is a certain distance (e.g., 3 cm).
  • a specific patch antenna among the plurality of patch antennas 311 to 318 included in the antenna array 300 for receiving power may receive concentrated power.
  • the distance between the wireless power transmission device 100 and the electronic device 150 may suddenly become closer. For example, as the electronic device 150 moves with respect to the fixed wireless power transmission device 100, the distance between the wireless power transmission device 100 and the electronic device 150 may become closer. At this time, a specific patch antenna among the plurality of patch antennas 311 to 318 may receive excessively concentrated power.
  • the first area 350 may represent points that can receive the highest power from the RF wave 330.
  • the second area 351 may represent points that can receive lower power than the first area 350 by an amount corresponding to a specified distance.
  • the third area 352 may represent points that can receive lower power than the second area 351 by an amount corresponding to a specified distance.
  • each of the plurality of patch antennas 311 to 318 may span a plurality of lines 350 to 352. Accordingly, each of the plurality of patch antennas 311 to 318 can receive or obtain different amounts of power. For example, the third patch antenna 313 and the fifth patch antenna 315 can receive or obtain the highest power. On the other hand, the second patch antenna 312 and the eighth patch antenna 318 can receive or obtain the lowest power.
  • the electronic device 150 when the electronic device 150 receives power from a distance, power may be concentrated from the antenna array 300 for power reception to a specific patch antenna.
  • the degree to which power is concentrated on a specific patch antenna may be high.
  • the power obtained from a specific patch antenna may be higher than the threshold of the rectifier that rectifies the power. As a result, damage to the rectifier may occur or the rectification efficiency of the rectifier may be lowered.
  • An electronic device (e.g., the electronic device 150 of FIG. 2) may change the power conversion path between the patch antenna and the rectifier when the beam width of the RF wave is fairly thin when receiving power from a distance. You can. For example, when the power obtained from the patch antenna is higher than the threshold, the electronic device 150 may distribute the power to another adjacent rectifier. Through this, the electronic device 150 can prevent damage to the circuit including the patch antenna and the rectifier even if excessive power is concentrated in the specific patch antenna and the specific rectifier. Below, when the power obtained from the patch antenna by the electronic device 150 is higher than the threshold, a method of distributing the power to other adjacent rectifiers will be described in detail.
  • FIG. 4 is a diagram of an antenna array including a plurality of patch antennas and a plurality of two-way switches disposed between the plurality of patch antennas according to an embodiment.
  • the antenna array 400 may include a plurality of antennas 410, 420, 430, and 440.
  • the antenna array 400 may be an antenna array for receiving power.
  • the plurality of antennas 410, 420, 430, and 440 may each be connected to a plurality of rectifiers (not shown).
  • the antenna array 400 may further include a plurality of two-way switches 415, 417, 422, 427, 432, and 435 disposed between the plurality of antennas 410, 420, 430, and 440.
  • a plurality of bidirectional switches 415, 417, 422, 427, 432, and 435 may be disposed between adjacent antennas.
  • a specific antenna may be connected to at least one adjacent antenna through at least one two-way switch.
  • the plurality of antennas 410, 420, 430, and 440 may include a first patch antenna 410 and a second patch antenna 420.
  • the plurality of rectifiers may include a first rectifier 411 connected to the first patch antenna 410 and a second rectifier 421 connected to the second patch antenna 420.
  • the plurality of antennas 410, 420, 430, and 440 may be implemented as patch antennas. Meanwhile, hereinafter, each of the plurality of antennas 410, 420, 430, and 440 will be referred to as a patch antenna. However, this is only for convenience of explanation, and the technical idea of the present invention may not be limited thereto.
  • the two-way switch e.g., 415
  • the two-way switch is turned on (or short-circuited) to generate power greater than the reference power. 1 It can be distributed to the second rectifier 421 connected to the rectifier 411 and the second patch antenna 420 adjacent to the first patch antenna 410.
  • the first patch antenna 410 may receive an RF wave formed by a wireless power transmission device (e.g., 100 in FIG. 1) and obtain first power corresponding to the received RF wave. there is.
  • the first rectifier 411 may rectify the first power of alternating current obtained from the first patch antenna 410 into DC power.
  • the first rectifier 411 is a rectifier corresponding to the first patch antenna 410 and can rectify the first power obtained from the first patch antenna 410.
  • the second patch antenna 420 may receive an RF wave formed by a wireless power transmission device (e.g., 100 in FIG. 1) and obtain second power corresponding to the received RF wave. there is.
  • the second rectifier 421 may rectify the second power of alternating current obtained from the second patch antenna 420 into DC power.
  • the second rectifier 421 is a rectifier corresponding to the second patch antenna 420 and can rectify the second power obtained from the second patch antenna 420.
  • the first power of the first power is switched through the two-way switch 415. Power exceeding the standard power may be provided to the second rectifier 421.
  • the second power obtained from the second patch antenna 420 is greater than the second reference power indicating the threshold of the second rectifier 421, the second reference power among the second powers is switched through the two-way switch 415. Excess power may be provided to the first rectifier 411.
  • the two-way switch 415 can be turned on.
  • the first power obtained from the first patch antenna 410 is not greater than the first reference power indicating the threshold of the first rectifier 411, and the second power obtained from the second patch antenna 420 If the power is not greater than the second reference power indicating the threshold of the second rectifier 421, the two-way switch 415 may be turned off. Accordingly, the power provision path between the first patch antenna 410 and the second patch antenna 420 may be blocked.
  • an electronic device including an antenna array 400 when the power obtained from a specific patch antenna exceeds the threshold of the corresponding rectifier, Excess power can be provided or distributed by a rectifier in the patch antenna. Through this, the electronic device 150 can prevent damage to the rectifier. Additionally, the electronic device 150 can increase power transmission efficiency by optimizing the amount of rectification for each rectification path in consideration of the amount of power to be applied to each rectifier.
  • FIG. 5 is a graph illustrating a method in which an electronic device according to an embodiment provides power exceeding the reference power among the first power obtained from the first patch antenna to a second rectifier corresponding to the second patch antenna. .
  • an electronic device e.g., the electronic device 150 of FIG. 2 transmits a wireless power transmission device (e.g., the wireless power transmitter of FIG. 1) through a plurality of antennas. At least a portion of the RF wave of the first beam width formed from the transmitting device 100 may be received.
  • the electronic device 150 may receive power wirelessly through the first antenna (or first patch antenna) 410 and the second antenna (or first patch antenna) 410.
  • the electronic device 150 may obtain power based on at least a portion of the received RF wave.
  • the electronic device 150 acquires first power through the first antenna (or first patch antenna) 410 and obtains second power through the second antenna (or second patch antenna) 420. Power can be obtained.
  • the electronic device 150 may check whether the first power exceeds the first reference power and the second power is less than the second reference power.
  • the first reference power is the threshold (e.g., the first rectifier 411 in FIG. 4) for rectifying the first power obtained from the first antenna (or first patch antenna) 410. or rectification threshold).
  • the second reference power is the threshold (or rectification value) of the second rectifier (e.g., the second rectifier 421 in FIG. 4) for rectifying the second power obtained from the second antenna (or second patch antenna) 420. threshold).
  • the first reference power and the second reference power may be the same or different from each other.
  • the first reference power and the second reference power may be determined according to the location and/or arrangement of the first antenna (or first patch antenna) 410 and the second antenna (or second patch antenna) 420. .
  • the electronic device 150 uses a two-way switch (e.g. : Through the two-way switch 415 in FIG. 4, the power exceeding the first reference power among the first power obtained from the first antenna (or first patch antenna) 410 is transferred to the second antenna (or second patch antenna). It can be provided or distributed to the second rectifier 421 corresponding to the antenna 420.
  • a two-way switch e.g. : Through the two-way switch 415 in FIG. 4, the power exceeding the first reference power among the first power obtained from the first antenna (or first patch antenna) 410 is transferred to the second antenna (or second patch antenna). It can be provided or distributed to the second rectifier 421 corresponding to the antenna 420.
  • the second power is adjusted to the second reference power. It is possible to check whether or not the first power exceeds the first reference power.
  • the electronic device 150 when the second power exceeds the second reference power and the first power is less than the first reference power (example of operation 509), in operation 511, the electronic device 150 operates a two-way switch (e.g., Through the two-way switch 415 in FIG. 4, the power exceeding the second reference power among the second powers obtained from the second patch antenna 420 is corresponded to the first antenna (or first patch antenna) 410. It can be provided or distributed to the first rectifier 411.
  • a two-way switch e.g., Through the two-way switch 415 in FIG. 4, the power exceeding the second reference power among the second powers obtained from the second patch antenna 420 is corresponded to the first antenna (or first patch antenna) 410. It can be provided or distributed to the first rectifier 411.
  • the electronic device 150 without power distribution, The first power obtained from the antenna (or first patch antenna) 410 is provided to the first rectifier 411, and the second power obtained from the second antenna (or second patch antenna) 420 is provided to the second rectifier 411. It can be provided to the rectifier 421.
  • the electronic device 150 connects the first antenna (or first patch antenna) 410. Without power distribution between the and the second antenna (or second patch antenna) 420, the first antenna (or first patch antenna) 410 and the second antenna (or second patch antenna) 420 are each adjacent to each other. The first power and the second power can be distributed to other antennas.
  • the electronic device 150 may convert (or rectify) the received power through the first rectifier 411 and the second rectifier 421.
  • the electronic device 150 may convert (or rectify) alternating current power into direct current power.
  • the electronic device 150 may provide the converted power to a converter (e.g., converter 253 in FIG. 2) or a charger (e.g., charger 254 in FIG. 2).
  • FIG. 6 is a graph illustrating a method in which an electronic device according to an embodiment provides power exceeding the reference power among the first power obtained from the first patch antenna to a second rectifier corresponding to the second patch antenna. .
  • the first patch antenna (e.g., the first patch antenna 410 of FIG. 4) is a wireless power transmission device (e.g., the wireless power transmission device 100 of FIG. 1).
  • the first power 610 can be obtained by receiving the RF wave formed by .
  • the second patch antenna (e.g., the second patch antenna 420 in FIG. 4) may acquire second power 620 by receiving the RF wave generated by the wireless power transmission device 100.
  • the first power 610 may exceed the first reference power for the first rectifier (eg, the first rectifier 411 in FIG. 4) connected to the first patch antenna 410.
  • the second power 620 may be smaller than the second reference power for the second rectifier (eg, the second rectifier 421 in FIG. 4) connected to the second patch antenna 420.
  • the power 630 exceeding the first reference power among the first power 610 is generated by a two-way switch disposed between the first patch antenna 410 and the second patch antenna 420 (e.g., FIG. It can be provided or distributed to the second rectifier 421 connected to the second patch antenna 420 through the two-way switch 415 of 4).
  • the first rectifier 411 may rectify (or convert) the power 615 excluding the power 630 distributed from the first power 610.
  • the second rectifier 421 may rectify (or convert) the power 625 added to the power 630 distributed from the second power 620.
  • the first rectifier 411 and the second rectifier 421 may simultaneously perform the above rectification operation.
  • the electronic device 150 when the power obtained from a specific patch antenna exceeds the threshold of the corresponding rectifier, the electronic device 150 provides or distributes the excess power to the rectifier of the adjacent patch antenna through a two-way switch. You can.
  • Figure 7 is a diagram of a two-way switch disposed between a first patch antenna and a second patch antenna according to an embodiment.
  • a two-way switch may include two switches 710 and 720.
  • the two-way switch may include a first switch 710 and a second switch 720.
  • the first switch 710 and the second switch 720 may be implemented with N-type MOSFETs arranged in different directions.
  • a bidirectional switch can be implemented with a back-to-back N-type MOSFET.
  • an electronic device may include a first resistor (R1) and a second resistor (R2) for controlling a two-way switch.
  • the first resistance (R1) and the second resistance (R2) may be the same or different from each other.
  • the first antenna (or first patch antenna) 410 receives an RF wave formed by a wireless power transmission device (e.g., the wireless power transmission device 100 of FIG. 2)
  • the first A first voltage (V1) may be applied to the antenna (or first patch antenna) 410.
  • the second antenna (or second patch antenna) 420 receives the RF wave formed by the wireless power transmission device 100
  • a second voltage is applied to the second antenna (or second patch antenna) 420. (V2) may be authorized.
  • the first power obtained through the first antenna (or first patch antenna) 410 may be greater than the second power obtained through the second patch antenna 420.
  • the first voltage (V1) applied to the first antenna (or first patch antenna) 410 is greater than the second voltage (V2) applied to the second antenna (or second patch antenna) 420.
  • the condition under which the first switch 710 is turned on may be determined as in “Equation 1.”
  • V1 is the voltage applied to the first antenna (or first patch antenna) 410
  • V2 is the voltage applied to the second antenna (or second patch antenna) 420
  • VDG1 is the first switch ( 710)
  • VD2 may be a voltage applied to the second body diode 725 of the second switch 720.
  • the voltage (V1-V2) corresponding to the difference between the first voltage (V1) and the second voltage (V2) is distributed by the first resistor (R1) and the second resistor (R2) It may be applied as the gate voltage (VG) of the first switch 710 and the second switch 720.
  • the gate voltage (VG) is applied to the gates of the first switch 710 and the second switch 720, the first switch 710 is turned on (or short-circuited), and the second switch 720 is turned off (or can be open).
  • the second switch 720 is in an off state, a current path may be formed through the second body diode 725 of the second switch 720.
  • power exceeding the first reference power is provided or distributed to the second rectifier 421 through the turned-on first switch 710 and the second body diode 725. It can be.
  • the second power obtained through the second antenna (or second patch antenna) 420 may be greater than the first power obtained through the first antenna (or first patch antenna) 410. there is.
  • the second voltage (V2) applied to the second antenna (or second patch antenna) 420 is greater than the first voltage (V1) applied to the first antenna (or first patch antenna) 410. You can.
  • the condition under which the second switch 720 is turned on may be determined as in “Equation 2.”
  • V1 is the voltage applied to the first antenna (or first patch antenna) 410
  • V2 is the voltage applied to the proposed second antenna (or second patch antenna) 420
  • VDG2 is the second switch ( 720)
  • VD1 may be a voltage applied to the first body diode 715 of the first switch 710.
  • the voltage (V2-V1) corresponding to the difference between the second voltage (V2) and the first voltage (V1) is distributed by the first resistor (R1) and the second resistor (R2) It may be applied as the gate voltage (VG) of the first switch 710 and the second switch 720.
  • the gate voltage VG is applied to the gates of the first switch 710 and the second switch 720, the first switch 710 may be turned off and the second switch 720 may be turned on.
  • the first switch 710 is turned off, a current path may be formed through the first body diode 715 of the first switch 710.
  • the power exceeding the second reference power is provided or distributed to the first rectifier 411 through the turned-on second switch 720 and the first body diode 715. It can be.
  • the two-way switch can be controlled in hardware without separate control.
  • a hardware-controlled two-way switch can operate relatively faster than a software-controlled two-way switch.
  • FIG. 8A is a diagram of a two-way switch disposed between a first patch antenna and a second patch antenna according to an embodiment. Meanwhile, the operation of the two-way switch in FIG. 8A will be described in detail together with FIG. 8B.
  • FIG. 8B is a table for explaining a power distribution operation according to on/off of a two-way switch disposed between the first patch antenna and the second patch antenna according to an embodiment.
  • a two-way switch may include two switches 810 and 820.
  • the two-way switch may include a first switch 810 and a second switch 820.
  • the first switch 810 and the second switch 820 may be implemented the same or similar to the first switch 710 and the second switch 720 described in FIG. 7.
  • an electronic device e.g., electronic device 150 of FIG. 2 includes a first comparator 830, a second comparator 840, and an OR gate 850 for controlling a two-way switch.
  • the first comparator 830 is a comparator corresponding to (or connected to) the first antenna (or first patch antenna) 410
  • the second comparator 840 is a comparator corresponding to (or connected to) the first antenna (or first patch antenna) 410.
  • the first comparator 830 compares the first voltage (V1) applied to the first antenna (or first patch antenna) 410 and the first reference voltage (VREF1), and the comparison result A first signal representing can be output.
  • the first comparator 830 may compare the peak amplitude of the first voltage V1, which is an AC signal, with the first reference voltage VREF1.
  • the first comparator 830 may output a first signal indicating high (or high level).
  • the first comparator 830 may output a first signal indicating low (or low level) if the first voltage V1 is not greater than the first reference voltage VREF1.
  • the first reference voltage VREF1 may be determined according to the location or arrangement of the first antenna (or first patch antenna) 410.
  • the first reference voltage VREF1 may be provided from a battery included in the electronic device 150.
  • the second comparator 840 compares the second voltage (V2) applied to the second antenna (or second patch antenna) 420 and the second reference voltage (VREF2), and the comparison result A second signal representing can be output.
  • the second comparator 840 may compare the peak amplitude of the second voltage V2, which is an AC signal, with the second reference voltage VREF2. For example, if the second voltage V2 is greater than the second reference voltage VREF1, the second comparator 840 may output a second signal indicating high (or high level). Additionally, the second comparator 840 may output a second signal indicating low (or low level) if the second voltage V2 is not greater than the second reference voltage VREF2.
  • the first reference voltage VREF1 may be determined according to the location of the first patch antenna 410.
  • the second reference voltage VREF2 may be determined according to the location or arrangement of the second antenna (or second patch antenna) 420.
  • the second reference voltage VREF2 may be the same as or different from the first reference voltage VREF1.
  • the second reference voltage VREF2 may be provided from a battery included in the electronic device 150.
  • the OR gate 850 may receive a first signal and the second signal.
  • the OR gate 850 is a gate of a two-way switch (e.g., the gate of the first switch 810 and the second switch 820) so that the two-way switch is turned on or off based on the input first signal and the second signal.
  • a gate signal can be output to .
  • the OR gate 850 generates a gate signal indicating high (or high level) when at least one of a first signal indicating high (or high level) or a second signal indicating high (or high level) is input.
  • a gate signal indicating high (or high level) may include a voltage sufficient to bias a bidirectional switch.
  • the OR gate 850 may output a gate signal indicating low (or low level) when a first signal indicating low (or low level) and a second signal indicating low (or low level) are input. there is.
  • the first switch 810 when a signal indicating high (or high level) is applied to the gates of the first switch 810 and the second switch 820, the first switch 810 is turned on and the second switch 820 is turned on. can be turned off.
  • the first voltage (V1) is greater than the second voltage (V2)
  • the power exceeding the first reference power among the first powers obtained from the first patch antenna 410 is turned on with the first switch ( 810) and the second body diode 815 may be distributed to the second rectifier 421 of the second antenna (or second patch antenna) 420.
  • the second voltage V2 is greater than the first voltage V1
  • the power exceeding the second reference power among the second power obtained from the second patch antenna 420 is turned on by the second switch 820 and It may be provided or distributed to the first rectifier 411 of the first patch antenna 410 through the first body diode 815.
  • both the first switch 810 and the second switch 820 can be turned off. As shown in FIG. 8B, the power distribution operation between the first patch antenna 410 and the second patch antenna 420 may not be performed.
  • the two-way switch can be controlled in hardware without separate control.
  • a hardware-controlled two-way switch can operate relatively faster than a software-controlled two-way switch.
  • FIG. 9A is a diagram of a two-way switch disposed between a first patch antenna and a second patch antenna according to an embodiment.
  • a two-way switch may include two switches 910 and 920.
  • the two-way switch may include a first switch 910 and a second switch 920.
  • the first switch 910 and the second switch 920 may be implemented the same or similar to the first switch 710 and the second switch 720 described in FIG. 7.
  • an electronic device may include a controller 930 for controlling a two-way switch.
  • the controller 930 may be implemented as a PMIC, micro controller unit (MCU), or application processor (AP).
  • the controller 930 may include an analog-to-digital converter (ADC) 940.
  • ADC analog-to-digital converter
  • the controller 930 may compare the first voltage V1 applied to the first antenna (or first patch antenna) 410 with the first reference voltage. For example, the controller 930 may check the peak amplitude of the first voltage V1 of the AC signal through the ADC 940. The controller 930 may compare the peak size of the confirmed first voltage V1 with the first reference voltage.
  • the controller 930 may compare the second voltage V2 applied to the second antenna (or second patch antenna) 420 with the second reference voltage. For example, the controller 930 may check the peak amplitude of the second voltage V1 of the AC signal through the ADC 940. The controller 930 may compare the peak size of the confirmed second voltage V2 with the second reference voltage.
  • the controller 930 may output a gate signal to the gates of the first switch 910 and the second switch 920 based on the comparison result.
  • the gate signal may be implemented as an enable signal for turning on a bidirectional switch or a disable signal for turning off a bidirectional switch.
  • the enable signal may include a voltage at which the bi-directional switch may be biased.
  • the controller 930 may control the two-way switch to optimize power distribution between the first antenna (or first patch antenna) 410 and the second antenna (or second patch antenna) 420. For example, if the first voltage (V1) is greater than the second voltage (V2), the power exceeding the first reference power among the first powers obtained from the first antenna (or first patch antenna) 410 is turned on.
  • FIG. 9B is a flow chart to explain how a controller controls a two-way switch disposed between a first patch antenna and a second patch antenna, according to an embodiment.
  • an electronic device e.g., electronic device 150 of FIG. 2 transmits first power through a first antenna (or first patch antenna) 410. and the second power can be obtained through the second antenna (or second patch antenna) 420.
  • the controller determines whether the first voltage applied to the first antenna (or first patch antenna) 410 exceeds the first reference voltage. You can check it.
  • the controller 930 may check the peak size of the first voltage through the ADC 940 and check whether the confirmed peak size exceeds the first reference voltage.
  • the controller 930 when the first voltage applied to the first antenna (or first patch antenna) 410 exceeds the first reference voltage (example of operation 903), in operation 907, the controller 930 performs the two-way An enable signal may be output to the gate of the first switch 910 and the second switch 920 so that the switch is turned on. At this time, through the two-way switch, the power exceeding the first reference power among the first powers is transferred from the first antenna (or first patch antenna) 410 to the second antenna (or second patch antenna) 420. It can be provided or distributed to 2 rectifiers (421).
  • the controller 930 may check the peak size of the second voltage through the ADC 940 and check whether the confirmed peak size exceeds the second reference voltage.
  • the controller 930 when the second voltage applied to the second antenna (or second patch antenna) 420 exceeds the second reference voltage (example of operation 905), in operation 907, the controller 930 performs a two-way An enable signal may be output to the gate of the first switch 910 and the second switch 920 so that the switch is turned on. At this time, through the two-way switch, the power exceeding the second reference power among the second powers is transferred from the second antenna (or second patch antenna) 420 to the first antenna (or first patch antenna) 410. It can be provided or distributed as 1 rectifier (411).
  • the controller 930 A disable signal can be output to the gates of the first switch 910 and the second switch 920 so that the two-way switch is turned off. At this time, due to the bidirectional switch being turned off, power distribution between the first antenna (or first patch antenna) 410 and the second antenna (or second patch antenna) 420 may not be performed.
  • the two-way switch can be controlled in software through the controller 930.
  • Figure 10 is a graph showing power efficiency according to impedance according to one embodiment.
  • a plurality of rectifiers included in an electronic device may have different rectification efficiencies depending on input power.
  • the first graph 1010 may represent rectification efficiency according to input power when the impedance of the load is a first value (eg, 640 ohm).
  • the second graph 1020 may represent rectification efficiency according to input power when the impedance of the load is a second value (eg, 320 ohm).
  • the third graph 1030 may represent rectification efficiency according to input power when the impedance of the load is a third value (e.g., 160 ohms).
  • the electronic device 150 may optimize rectification efficiency by distributing power obtained from a patch antenna to a rectifier of an adjacent patch antenna. For example, when the impedance of the load is the first value, the plurality of rectifiers may have maximum rectification efficiency when the input power is 50 mW. When the impedance of the load is the second value, the plurality of rectifiers may have maximum rectification efficiency when the input power is 100 mW. When the impedance of the load is the third value, the plurality of rectifiers may have maximum rectification efficiency when the input power is 125 mW.
  • the electronic device 150 may check the impedance of the load and adjust input power to a plurality of rectifiers according to the checked impedance. For example, the electronic device 150 may adjust the power input to the rectifiers by distributing the power obtained from the patch antenna to the rectifiers of the adjacent patch antennas. Through this, the electronic device 150 can increase the rectification efficiency of the plurality of rectifiers.
  • An electronic device 150 that receives power wirelessly includes a first antenna 410, a second antenna 420, and a two-way switch 415 disposed between the first antenna and the second antenna. , and may include a first rectifier 411 connected to the first antenna and a second rectifier 421 connected to the second antenna.
  • the two-way switch when power greater than the reference power of the first rectifier is applied to the first antenna, the two-way switch is turned on and power greater than the reference power is distributed to the first rectifier and the second rectifier. It can be characterized as being.
  • the first power applied to the first antenna exceeds the reference power of the first rectifier and the second power applied to the second antenna does not exceed the reference power of the second rectifier.
  • power exceeding the reference power of the first rectifier among the first powers may be provided to the second rectifier through the two-way switch.
  • the voltage corresponding to the difference between the first voltage applied to the first antenna and the second voltage applied to the second antenna is, the first resistor corresponding to the first antenna and the second voltage It may be distributed by the second resistor corresponding to the antenna and applied as the gate voltage of the two-way switch.
  • the first switch included in the bidirectional switch may be turned on and the second switch included in the bidirectional switch may be turned off.
  • power exceeding the reference power of the first rectifier among the first power may be provided to the second rectifier through a body diode included in the first switch and the second switch.
  • the electronic device may further include a first comparator 830 connected to the first antenna and a second comparator 840 connected to the second antenna.
  • the first comparator may be set to output a first signal by comparing a first voltage applied to the first antenna and a first reference voltage.
  • the second comparator may be set to output a second signal by comparing a second voltage applied to the second antenna and a second reference voltage.
  • the two-way switch may be turned on or off based on the first signal and the second signal.
  • the first switch included in the two-way switch is turned on, and the second switch included in the two-way switch is turned on. 2The switch can be turned off.
  • power exceeding the reference power of the first rectifier among the first power may be provided to the second rectifier through a body diode included in the first switch and the second switch. .
  • the electronic device may further include a controller 930 that controls the two-way switch.
  • the controller may be set to compare a first voltage applied to the first antenna and a first reference voltage.
  • the controller may be set to compare a second voltage applied to the second antenna and a second reference voltage.
  • the controller selects the reference power of the first rectifier among the first power. It may be set to output an enable signal to the two-way switch to provide the excess power to the second rectifier.
  • the reference power of the second rectifier among the second powers is exceeded. It may be set to output an enable signal to the two-way switch to provide power to the first rectifier.
  • the bidirectional switch may include two N-type MOSFETs arranged in different directions.
  • the electronic device may further include a third antenna and a fourth antenna.
  • the first antenna, the second antenna, the third antenna, and the fourth antenna may be arranged in an array form.
  • a method of operating the electronic device 150 that wirelessly receives power may include receiving power through the first antenna 410 and the second antenna 420.
  • a method of operating the electronic device according to an embodiment includes the arrangement between the first antenna and the second antenna when power greater than the reference power of the first rectifier 411 connected to the first antenna is applied to the first antenna. This may include an operation of turning on a bidirectional switch to distribute power greater than the reference power to the first rectifier and the second rectifier 421 connected to the second antenna.
  • a method of operating the electronic device includes the first power applied to the first antenna exceeding the reference power of the first rectifier and the second power applied to the second antenna exceeding the reference power. If not, the operation of providing power exceeding the reference power of the first rectifier among the first power to the second rectifier through the two-way switch may be further included.
  • a method of operating the electronic device includes a voltage corresponding to a difference between a first voltage applied to the first antenna and a second voltage applied to the second antenna, The operation may further include dividing the voltage by a first resistor and a second resistor corresponding to the second antenna and applying the voltage to the gate of the two-way switch.
  • a method of operating the electronic device includes turning on the first switch included in the bidirectional switch and turning off the second switch included in the bidirectional switch, based on the gate voltage being applied to the bidirectional switch. Additional actions may be included.
  • a method of operating the electronic device includes transferring power exceeding the reference power of the first rectifier among the first power to the second switch through a body diode included in the first switch and the second switch. An operation provided by a rectifier may be further included.
  • a method of operating the electronic device includes comparing the first voltage applied to the first antenna and the first reference voltage through a first comparator 830 connected to the first antenna to generate a first signal. An output operation may be further included.
  • a method of operating the electronic device includes comparing a second voltage applied to the second antenna and a second reference voltage through a second comparator 840 connected to the second antenna to generate a second signal. An output operation may be further included.
  • the method of operating the electronic device according to an embodiment may further include turning the two-way switch on or off based on the first signal and the second signal.
  • a method of operating the electronic device includes turning on a first switch included in the two-way switch based on at least one of the first signal indicating a high level or the second signal indicating a high level, It may further include turning off the second switch included in the two-way switch.
  • a method of operating the electronic device includes transferring power exceeding the reference power of the first rectifier among the first power to the second switch through a body diode included in the first switch and the second switch. An operation provided by a rectifier may be further included.
  • the method of operating the electronic device may further include comparing a first voltage applied to the first antenna and a first reference voltage through a controller 930 included in the electronic device. there is.
  • the method of operating the electronic device according to an embodiment may further include comparing a second voltage applied to the second antenna and a second reference voltage through the controller.
  • a method of operating the electronic device according to an embodiment includes, if the first voltage is higher than the first reference voltage and the second voltage is not higher than the second reference voltage, through the controller, The method may further include outputting an enable signal to the two-way switch to provide the power exceeding the reference power of the first rectifier to the second rectifier.
  • a method of operating the electronic device includes, when the first voltage is not higher than the first reference voltage and the second voltage is higher than the second reference voltage, through the controller, The method may further include outputting an enable signal to the two-way switch to provide power exceeding the reference power of the second rectifier to the first rectifier.
  • the bidirectional switch according to one embodiment may include two N-type MOSFETs arranged in different directions.
  • the electronic device may further include a third antenna and a fourth antenna.
  • the first antenna, the second antenna, the third antenna, and the fourth antenna may be arranged in an array form.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Un dispositif électronique (150) de réception d'énergie sans fil, selon un mode de réalisation, peut comprendre : une première antenne (410) ; une seconde antenne (420) ; un commutateur bidirectionnel (415) disposé entre la première antenne et la seconde antenne ; et un premier redresseur (411) connecté à la première antenne et un second redresseur (421) connecté à la seconde antenne. Le dispositif électronique selon un mode de réalisation peut être caractérisé en ce que, lorsque la puissance supérieure ou égale à la puissance de référence du premier redresseur est appliquée à la première antenne, le commutateur bidirectionnel est activé de telle sorte que la puissance supérieure ou égale à la puissance de référence est distribuée au premier redresseur et au second redresseur.
PCT/KR2023/020891 2022-12-21 2023-12-18 Dispositif électronique de réception d'énergie sans fil et son procédé de fonctionnement WO2024136374A1 (fr)

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KR20110133242A (ko) * 2010-06-04 2011-12-12 엘지이노텍 주식회사 전력 전송을 위한 송신장치 및 수신장치
KR20190080728A (ko) * 2017-12-28 2019-07-08 성균관대학교산학협력단 에너지 하베스팅 및 무선 전력 수신을 위한 장치 및 그 방법
KR20200047173A (ko) * 2018-10-26 2020-05-07 삼성전자주식회사 배터리의 충전을 제어하기 위한 전자 장치 및 방법
KR20220014786A (ko) * 2020-07-29 2022-02-07 삼성전자주식회사 무선 전력을 수신하는 전자 장치
JP2022120973A (ja) * 2021-02-08 2022-08-19 国立大学法人 名古屋工業大学 無線電力伝送用レクテナ用電力変換回路、無線電力伝送用レクテナ及びそれを用いた電力伝送方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110133242A (ko) * 2010-06-04 2011-12-12 엘지이노텍 주식회사 전력 전송을 위한 송신장치 및 수신장치
KR20190080728A (ko) * 2017-12-28 2019-07-08 성균관대학교산학협력단 에너지 하베스팅 및 무선 전력 수신을 위한 장치 및 그 방법
KR20200047173A (ko) * 2018-10-26 2020-05-07 삼성전자주식회사 배터리의 충전을 제어하기 위한 전자 장치 및 방법
KR20220014786A (ko) * 2020-07-29 2022-02-07 삼성전자주식회사 무선 전력을 수신하는 전자 장치
JP2022120973A (ja) * 2021-02-08 2022-08-19 国立大学法人 名古屋工業大学 無線電力伝送用レクテナ用電力変換回路、無線電力伝送用レクテナ及びそれを用いた電力伝送方法

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