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Patent Agency Ranking
公开(公告)号：US12155235B2
公开(公告)日：2024-11-26
申请号：US18070854
申请日：2022-11-29
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo Gu , Jaeseok Park , Jaehyun Park , Sungku Yeo , Jungkyu Han
Abstract: A wireless power transmitter may include a power amplifier configured to output an amplified signal based on an input signal and a driving voltage, a first LC resonant circuit connected in parallel to the power amplifier, a matching circuit, and a transmission coil connected to the matching circuit. The matching circuit may include a second LC resonant circuit including a first inductor and a first capacitor connected in series to the first inductor, and having one end connected to an output terminal of the power amplifier and one end of the first LC resonant circuit, and a second capacitor and a third capacitor respectively connected to the other end of the second LC resonant circuit. The first inductor may be configured to have an inductance value leading to an impedance of the second LC resonant circuit equal to or greater than a first predetermined magnitude at at least one second or higher harmonic frequency of an operating frequency of the input signal.
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公开(公告)号：US12107442B2
公开(公告)日：2024-10-01
申请号：US17667964
申请日：2022-02-09
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jaehyun Park , Beomwoo Gu , Jaeseok Park , Sungku Yeo , Youngho Ryu , Bohwan Choi
CPC classification number: H02J50/70 , H01F27/263 , H02J7/02 , H02J50/12
Abstract: Disclosed is a coil including a first conductor disposed on a first plane, a second conductor disposed on a second plane different from the first plane, and including a first end electrically connected to a first end of the first conductor, and a second end positioned near a second end of the first conductor, and a third conductor disposed on the first plane, and including a first end electrically connected to the second end of the second conductor, and a second end positioned near the first end of the second conductor, wherein a pattern of the first conductor connecting the first end of the first conductor from the second end of the first conductor is in a clockwise or counterclockwise direction when the first plane is viewed from a first side, and wherein a pattern of the third conductor connecting the second end of the third conductor from the first end of the third conductor is in a direction opposite to the direction of the pattern of the first conductor when the first plane is viewed from the first side.
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公开(公告)号：US12081034B2
公开(公告)日：2024-09-03
申请号：US17276743
申请日：2019-09-17
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo Gu , Sungbum Park , Jaehyun Park , Kangho Byun , Sungku Yeo
CPC classification number: H02J50/005 , H01F38/14 , H02J7/0044 , H02J50/10 , H02J50/402 , H04B5/26 , H04B5/79 , H02J50/80 , H02J2310/22
Abstract: An example wireless charging device includes a wireless charging device body and a wireless power transmitting device disposed on the wireless charging device body. The wireless power transmitting device includes at least one transmitting coil and a transmitting magnetic body configured to surround the at least one transmitting coil and to face a receiving magnetic body provided on a wireless power receiving device of an external electronic device. The inner peripheral surface of the wireless power transmitting device faces the inner surface of the wireless charging device body. The transmitting magnetic body is formed in a ring structure, at least a part of which is open. One surface of the open ring structure is disposed on at least a part of the inner surface of the wireless charging device body. One surface of the ring structure of the transmitting magnetic body faces the receiving magnetic body.
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公开(公告)号：US12057713B2
公开(公告)日：2024-08-06
申请号：US17954825
申请日：2022-09-28
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Beomwoo Gu , Daehyun Kim , Jaeseok Park , Jaehyun Park , Sungku Yeo , Jeongman Lee
CPC classification number: H02J50/12 , H02M1/126 , H02M7/4818 , H03H7/40 , H03H11/30
Abstract: A wireless power transmitting device includes: a transistor configured to output a signal corresponding to a set operating frequency, based on an input signal and a driving voltage; a matching circuit connected with the transistor; a transmission coil connected with the matching circuit; an LC resonance circuit connected in parallel between the transistor and the matching circuit and configured to transfer a signal corresponding to at least one harmonic frequency of the operating frequency; and an impedance sensing circuit connected with the LC resonance circuit and configured to sense a load impedance of the wireless power transmitting device based on the signal corresponding to the at least one harmonic frequency transferred through the LC resonance circuit. The matching circuit is configured to provide impedance matching with the sensed load impedance by adjusting an impedance of the matching circuit or an impedance of the transmission coil.
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公开(公告)号：US11495962B2
公开(公告)日：2022-11-08
申请号：US16803336
申请日：2020-02-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Beomwoo Gu , Jeongman Lee , Seogyong Jeong
Abstract: An electronic device includes a reception coil configured to wirelessly receive power based on an externally formed magnetic field, a rectifier configured to rectify power generated from the reception coil, an over-voltage protection circuit connected with the rectifier, and an output capacitor connected with the over-voltage protection circuit, wherein the over-voltage protection circuit includes a negative temperature coefficient thermistor (NTC) selectively connected in parallel with the rectifier and the output capacitor and a switch connecting the NTC to the rectifier and the output capacitor when a voltage at an output terminal of the rectifier exceeds a designated threshold, and disconnecting the NTC from the rectifier and the output capacitor when the voltage at the output terminal of the rectifier is less than or equal to the designated threshold.
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