Samsung Electronics Co., Ltd.

Hongik University Industry-academia Cooperation Foundation

Kwangwoon University Industry-Academic Collaboration Foundation

Sungkyunkwan University

Postech Academy-industry Foundation

Sung-Bum Park

Kyung-Woo Lee

Dae-Kwang Jung

Hong-Seok Shin

Jae-Hyun Park

Sung-Ku Yeo

Se-Ho Park

Young-Ho Ryu

Jeong-seok Choi

Dong-jae Shin

Dong-Zo Kim

Yun-Je Oh

Young-Min Lee

Do-Won Kim

Sang-Wook Kwon

Keum-Su Song

Seong-Taek Hwang

Woo-Ram Lee

Joon-Il Kim

Chong-Min Lee

Chang-Hyun Lee

Jae-Hoon Lee

Hyun-Soo Kim

Huai-Rong Shao

Hae-Young Jun

Hyuk-Choon Kwon

Ki-Young Kim

Mikhail Nikolaevich Makurin

Sang-Wook Lee

Byoung-Hee Lee

Dong-Soo Lee

Jae-won Yoon

Kang-yoon Lee

Jae-Gon Lee

Se-Hoon Kim

Jung-Woo Kim

Dai-woong Choi

Yoo-Jeong Hyun

Ki-Uk Song

Seong Hoon Hyun, Legal Representative

Jeong-Seok Choi

In-kwon Kang

Jeong-Hae Lee

Kwi-Seob Um

Seung-Woo Han

Dong-Seek Park

Kyu-sub Kwak

Hong-Kweun Kim

Jae-Seok Park

Jae-Hyuck Shin

Artem Rudolfovitch Vilenskiy

Min-Seo Park

Hyun-Jun Ahn

Yun-Seong Eo

Chang-Yeong Kim

Jae-Hun Cho

Sang-yun Kim

Bum-Man Kim

Joon-Hyun Lee

Hyung-Woo Lee

Dong-In Kim

Jun-Ho Cho

Basha Shaik

Hyun-Woo Nam

Hamed Abbasizadeh

Yoo Jeong Hyun

Seo-Young Lee

Yun-Sik Park

Dong-Gyu Min

Thi Kim Nga Truong

Seung Il Huh

Sang-Wook Chi

Woo-Sung Shim

Ju-Hee Seo

Han-Tak Kwak

A wireless power receiver is disclosed. A wireless power receiver according to various embodiments of the present disclosure includes a resonant reception unit configured to receive wireless power by a resonance scheme; an inductive reception unit configured to receive wireless power by an induction scheme; and a power processing unit configured to process wireless power received at the resonant reception unit and the inductive reception unit. When the wireless power is received by the induction scheme, a current flowing in the inductive reception unit is greater than a current flowing in the resonant reception unit, and when the wireless power is received by the resonance scheme, a current flowing in the resonant reception unit is greater than a current flowing in the inductive reception unit.

Wireless power receiver

In various embodiments, an antenna array may comprise a dielectric; a first patch antenna disposed on a first region of the dielectric; a second patch antenna disposed on a second region of the dielectric; and a ground layer including a first sub-ground layer in contact with a lower portion of the first region of the dielectric, a third sub-ground layer in contact with a lower portion of the second region of the dielectric, and a second sub-ground layer spaced apart from a lower portion between the first region and the second region of the dielectric.

Antenna array

A method of a charging apparatus for controlling wireless charging is provided. The method includes detecting an electronic device, determining a charging method corresponding to the detected electronic device, and wirelessly charging the electronic device by selecting a coil corresponding to the determined charging method.

Charging apparatus and method for controlling wireless charging

In various embodiments, a metamaterial structure antenna may comprise: a feed line for feeding a signal; a ground plane comprising a cross-shaped aperture forming circular polarization on the basis of a magnetic field induced by the fed signal; and a patch plane formed parallel to the ground plane which emits electromagnetic waves on the basis of the circular polarization.

Metamaterial structure antenna and metamaterial structure array

An electronic device performing communication with a powerless sensor is provided. The electronic device includes a wireless charging module configured to wirelessly transmit power to a powerless sensor; and a communication module configured to receive data that is sensed in the powerless sensor using the wirelessly transmitted power.

Electronic device for operating powerless sensor and control method thereof

Disclosed are a wireless power transmission device and a control method thereof. The wireless power transmission device includes a communication circuit that receives information transmitted by an electronic device that receives wireless power; an array antenna including multiple cells that radiate wireless power; and a controller that receives the information transmitted by the electronic device through the communication circuit, combines cells of the multiple cells included in the array antenna based on the information and creates a group of cells corresponding to the electronic device, and controls the cells included in the group to radiate the wireless power towards the electronic device.

Wireless power transmission device and control method thereof

A wireless power transmitter according to various embodiments of the present invention can comprise a plurality of patch antennas, a coil, and a processor. The processor can control such that an electronic device is detected, the plurality of patch antennas and/or the coil is selected as a power transmission circuit for transmitting power for charging the electronic device, and power is transmitted by means of the plurality of patch antennas and/or the coil in accordance with the selection.

Wireless power transmitter, electronic device receiving power wirelessly, and method for operating same

A power amplifier may comprise: an element for amplifying an electrical signal received through an input terminal, and outputting the amplified electrical signal through an output terminal; a first impedance adjustment circuit connected to the input terminal of the element and adjusting impedance with respect to a frequency of a fundamental component at the input terminal; a second impedance adjustment circuit connected to the input terminal of the element and adjusting impedance with respect to a frequency of a multiplied harmonic component at the input terminal; a third impedance adjustment circuit connected to the output terminal of the element and adjusting impedance with respect to the frequency of the fundamental component at the output terminal; a fourth impedance adjustment circuit connected to the output terminal of the element and adjusting impedance with respect to the frequency of the multiplied harmonic component at the output terminal; a first frequency separation circuit which prevents an impedance change by the first impedance adjustment circuit with respect to the frequency of the multiplied harmonic component at the input terminal, and prevents an impedance change by the second impedance adjustment circuit with respect to the frequency of the fundamental component at the input terminal; and a second frequency separation circuit which prevents an impedance change by the third impedance adjustment circuit with respect to the frequency of the multiplied harmonic component at the output terminal, and prevents an impedance change by the fourth impedance adjustment circuit with respect to the frequency of the fundamental component at the output terminal.

Power amplifier and impedance adjustment circuit

A wireless power transmitting device is provided. The wireless power transmitting device may comprise an antenna, a memory, and a processor configured to control to store, as reference information, information of a first reflected signal of a pilot signal sent out through the antenna at a first time in the memory and control to compare the reference information with information about second reflected signals of a pilot signal sent out through the antenna at a second time, and determine a position of a target for detection based on a result of the comparison.

Wireless power transmitting device and method for controlling the same

An electronic device is provided. The electronic device includes a receiving circuit configured to wirelessly receive power and output AC power, a rectifying circuit configured to rectify the AC power from the receiving circuit, wherein the rectifying circuit may include a first P-MOSFET configured to transfer a positive amplitude of power to an output terminal of the rectifying circuit while the AC power has the positive amplitude and to prevent transferring a negative amplitude of power to the output terminal of the rectifying circuit while the AC power has the negative amplitude, and a forward loss compensating circuit connected with the first P-MOSFET configured to reduce a threshold voltage of the first P-MOSFET while the AC power has the positive amplitude.

Electronic device for wirelessly receiving power and method for operating the same

Disclosed are various embodiments relating to a wearable device. According to an embodiment, a wearable device including a wireless charging device may include: a housing of the wearable device; first and second straps connected to the housing; first and second buckles provided on the first and second straps; a reception resonator provided in the housing to receive power transmitted from the outside; and a wireless power reception module provided in the housing and electrically connected to the reception resonator. Various other embodiments can be made.

Wearable device

A hybrid antenna used for an electronic device is disclosed. A hybrid antenna comprises: a substrate comprising a first surface and a second surface and having an insulator; a first conductive member disposed on the first surface of the substrate and having a hole formed therein; a second conductive member disposed on a first area of the second surface of the substrate; and a third conductive member disposed on a second area of the second surface of the substrate and connected to a ground of an electronic device, wherein a first portion of the first conductive member operates as a first antenna for receiving a broadband signal and supplying power to the electronic device, and a second portion operates as a second antenna for receiving wireless power and supplying power to the electronic device, wherein a first power feeding unit is formed between the first antenna and second antenna.

Hybrid antenna

Methods and apparatus for wireless charging are provided. Transmission power transmitted from a wireless power transmitter is received at a power receiver of a wireless power receiver. A battery of the wireless power receiver is charged with the received transmission power. It is determined whether the battery is fully charged. A packet from a communication unit of the wireless power receiver is transmitted to the wireless power transmitter when the battery is fully charged. An auxiliary charge of the battery is performed by receiving strength-reduced transmission power from the wireless power transmitter.

Wireless charging apparatus and method

Disclosed is an apparatus and method for wirelessly transmitting power to power receivers from a power transmitter. The present disclosure provides a rational search procedure for locations of the power receivers, and provides a function of simultaneously charging multiple receivers using microwave multi-focusing. The wireless power transmission method performed by a power transmitter includes determining angular coordinates of the power transmitter in relation to a position of at least one power receiver; determining a distance between the at least one power receiver and the power transmitter based on the determined angular coordinates by using a focused microwave field; determining a location of the at least one power receiver based on the determined angular coordinates and the distance; and wirelessly transmitting power by focusing the microwave field to the determined location of the at least one power receiver.

Microwave wireless charger with focusing of microwave field

Growing community of inventors

Suwon-si, South Korea

Sung-Bum Park