公开(公告)号：US12101067B2

公开(公告)日：2024-09-24

申请号：US17614690

申请日：2020-05-22

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minato Ito ,  Hitoshi Kunitake ,  Takayuki Ikeda

IPC: H03F3/45 ,  H01L27/12 ,  H01L29/786 ,  H10B12/00

CPC classification number: H03F3/45475 ,  H01L27/1225 ,  H01L27/1255 ,  H01L29/78648 ,  H01L29/7869 ,  H10B12/00 ,  H03F2203/45594

Abstract: A semiconductor device that functions as a relay station and is reduced in size is provided. The semiconductor device includes an operational amplifier, a first transistor and a first capacitor that are electrically connected to a first input side of the operational amplifier, and a first resistor and a second resistor that are electrically connected to a second input side. The second resistor is electrically connected to an output side of the operational amplifier, a gate of the first transistor is electrically connected to a first power supply, the first resistor is electrically connected to a second power supply, and at least a transistor included in the operational amplifier has a region overlapping with the first transistor.

公开(公告)号：US11923814B2

公开(公告)日：2024-03-05

申请号：US17745033

申请日：2022-05-16

Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Tien Lun Ting ,  Xiangzhong Kong ,  Lei Wang ,  Ken Wen

IPC: H03F3/45 ,  H01Q1/24 ,  H03F1/26 ,  H03F3/195

CPC classification number: H03F3/45475 ,  H01Q1/248 ,  H03F1/26 ,  H03F3/195 ,  H03F2200/451 ,  H03F2203/45568 ,  H03F2203/45594

Abstract: An amplifying circuit and a rectifying antenna are provided. The amplifying circuit includes: a first rectifying circuit (20), configured to output a first direct current signal according to an alternating current signal; a second rectifying circuit (30), configured to output a second direct current signal according to the alternating current signal; a differential amplifying circuit (40), configured to receive the first direct current signal and the second direct current signal, amplify a difference between the first direct current signal and the second direct current signal, and output an amplified difference between the first direction current signal and the second direct current, the first direct current signal and the second direct current signal have directions opposite to each other. The amplifying circuit can improve sensitivity of an antenna with relatively low costs.

公开(公告)号：US20190021160A1

公开(公告)日：2019-01-17

申请号：US16031029

申请日：2018-07-10

Applicant: Shimadzu Corporation

Inventor： Kazuyuki HASHIZUME

IPC: H05K1/02 ,  H05K1/18 ,  H05K1/11 ,  H03F3/45 ,  G01K7/16

CPC classification number: H05K1/0201 ,  G01K7/16 ,  H03F3/45071 ,  H03F3/45475 ,  H03F2200/129 ,  H03F2203/45116 ,  H03F2203/45528 ,  H03F2203/45594 ,  H05K1/0209 ,  H05K1/111 ,  H05K1/181 ,  H05K2201/062 ,  H05K2201/10022 ,  H05K2201/10151 ,  H05K2201/10409 ,  H05K2201/10522

Abstract: On a circuit board, a metal thin film is formed on a surface 101 of a board body. A linear slit is formed in a metal thin film, so that the metal thin film is separated into a first region and a second region with the slit interposed therebetween. The circuit board 1 includes a heat generation source (for example, an IC) arranged in the first region and an element arranged in the second region. A current flows through the element in a direction parallel to the slit.

公开(公告)号：US20180269839A1

公开(公告)日：2018-09-20

申请号：US15986527

申请日：2018-05-22

Applicant: QUALCOMM Incorporated

Inventor： Arash Mehrabi ,  Zongyu Dong ,  Vijayakumar Dhanasekaran ,  Dongyang Tang ,  Chien-Chung Yang

IPC: H03F1/34 ,  H03F3/45 ,  H03F3/21 ,  H03F3/183

CPC classification number: H03F1/34 ,  H03F1/0272 ,  H03F1/3211 ,  H03F3/183 ,  H03F3/21 ,  H03F3/45475 ,  H03F2200/153 ,  H03F2200/21 ,  H03F2203/45136 ,  H03F2203/45151 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45562 ,  H03F2203/45594

Abstract: An apparatus includes a reference voltage circuit having a bandgap input and a reference voltage output. The apparatus also includes a digital-to-analog converter (DAC) coupled to the reference voltage output and having a digital signal input. The apparatus includes an amplifier having a first input coupled to an output of the DAC. The first input is coupled to an output of the amplifier via a feedback resistor. The apparatus includes a resistor coupled to the reference voltage output and having a body terminal coupled to the output of the amplifier.

公开(公告)号：US09993386B2

公开(公告)日：2018-06-12

申请号：US14556077

申请日：2014-11-28

Applicant: Louis G. Racette

Inventor： Louis G. Racette

IPC: A61H23/00 ,  A61H19/00 ,  H03F3/21 ,  H03F3/45 ,  A61H23/02

CPC classification number: A61H23/00 ,  A61H19/00 ,  A61H23/02 ,  A61H2201/165 ,  A61H2201/5015 ,  A61H2201/5043 ,  A61H2201/5097 ,  A61H2230/105 ,  H03F3/211 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2200/411 ,  H03F2203/45512 ,  H03F2203/45526 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45548 ,  H03F2203/45571 ,  H03F2203/45572 ,  H03F2203/45594 ,  H03F2203/45654

Abstract: An instrumentation absolute value differential amplifier is used as part of an electroencephalogram, electromyogram or electrocardiogram to quantify the excitation state of a user, processing and transmitting this information as a control signal for a user feedback device. In one possible arrangement, this feedback device includes a wireless sex toy which responds to the sent control information, acting as a mind controlled sex toy. This provides a simple, intuitive, aesthetically appealing interface for creating a unique sexual experience. The use of an instrumentation absolute value differential amplifier is sufficient to monitor the desired signals while reducing the number of parts required and allowing for less precise tolerances than traditional biological monitoring circuits, thus decreasing the cost of production.

公开(公告)号：US09955257B2

公开(公告)日：2018-04-24

申请号：US15240341

申请日：2016-08-18

Applicant: Silergy Semiconductor Technology (Hangzhou) Ltd.

Inventor： Huaping Zhu ,  Hejinsheng Cao ,  Qichang Wu ,  Zhenguo Sun

IPC: H03F3/38 ,  H04R3/02 ,  H03F3/187 ,  H03F3/213 ,  H03F1/34 ,  H03F1/30 ,  H03F3/185 ,  H03F3/45 ,  H03G3/34 ,  H03F3/217

CPC classification number: H04R3/02 ,  H03F1/305 ,  H03F1/342 ,  H03F3/185 ,  H03F3/187 ,  H03F3/213 ,  H03F3/217 ,  H03F3/2171 ,  H03F3/2173 ,  H03F3/38 ,  H03F3/45475 ,  H03F2200/03 ,  H03F2200/351 ,  H03F2200/432 ,  H03F2203/45512 ,  H03F2203/45528 ,  H03F2203/45534 ,  H03F2203/45536 ,  H03F2203/45594 ,  H03F2203/45631 ,  H03F2203/45634 ,  H03F2203/45702 ,  H03G3/348 ,  H04R2430/01

Abstract: The present disclosure relates to a class-D audio amplifier. When the class-D audio amplifier is powered on, an auxiliary power amplifier and an auxiliary feedback circuit constitute an auxiliary close loop so that a control loop is established in advance. The auxiliary close loop is disconnected after various circuit modules reach their steady operation points, and the class-D audio amplifier operates at a normal state. A soft start circuit is provided for suppressing noise which occurs when the class-D audio amplifier is powered on. Thus, the class-D audio amplifier suppresses POP noise at an output terminal when the class-D audio amplifier is powered on.

公开(公告)号：US20180097484A1

公开(公告)日：2018-04-05

申请号：US15809502

申请日：2017-11-10

Applicant: Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V.

Inventor： Friedbert van Raay

IPC: H03F3/21 ,  H03F1/56 ,  H03F3/60 ,  H03F3/195

CPC classification number: H03F3/211 ,  H01Q23/00 ,  H03F1/523 ,  H03F1/56 ,  H03F1/565 ,  H03F3/195 ,  H03F3/245 ,  H03F3/423 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/604 ,  H03F3/607 ,  H03F2200/06 ,  H03F2200/108 ,  H03F2200/135 ,  H03F2200/181 ,  H03F2200/222 ,  H03F2200/255 ,  H03F2200/297 ,  H03F2200/301 ,  H03F2200/315 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/42 ,  H03F2200/423 ,  H03F2200/451 ,  H03F2200/48 ,  H03F2200/498 ,  H03F2200/75 ,  H03F2203/45138 ,  H03F2203/45148 ,  H03F2203/45151 ,  H03F2203/45156 ,  H03F2203/45166 ,  H03F2203/45202 ,  H03F2203/45208 ,  H03F2203/45224 ,  H03F2203/45258 ,  H03F2203/45338 ,  H03F2203/45458 ,  H03F2203/45488 ,  H03F2203/45496 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45594 ,  H03F2203/45631 ,  H03F2203/45696 ,  H03F2203/45702

Abstract: A power amplifier includes a two-dimensional matrix of N×M active cells formed by stacking main terminals of multiple active cells in series. The stacks are coupled in parallel to form the two-dimensional matrix. The power amplifier includes a driver structure to coordinate the driving of the active cells so that the effective output power of the two-dimensional matrix is approximately N×M the output power of each of the active cells.

公开(公告)号：US09806675B2

公开(公告)日：2017-10-31

申请号：US15030941

申请日：2014-09-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dong-Il Yang

IPC: H03F1/02 ,  H03F3/24 ,  H03F3/193 ,  H03F3/195 ,  H03F3/45 ,  H03K3/037 ,  H02M3/156 ,  H02M1/44

CPC classification number: H03F1/0216 ,  H02M1/44 ,  H02M3/156 ,  H03F1/0227 ,  H03F3/193 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45475 ,  H03F2200/102 ,  H03F2200/351 ,  H03F2200/451 ,  H03F2200/555 ,  H03F2200/78 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03K3/0377

Abstract: Various embodiments of the present invention relate to a power amplification device and method, wherein the power amplification device can comprise: a power amplifier; a switch mode converter for controlling a bias of the power amplifier; a comparator for providing a switching signal to the switch mode converter according to an envelope signal; and a control unit for determining whether a switching frequency of the switch mode converter is within a specific band and applying an offset to the switching frequency so as to deviate from the specific band if the switching frequency of the switch mode converter is within the specific band. Various other embodiments can be carried out.

公开(公告)号：US09787265B2

公开(公告)日：2017-10-10

申请号：US14444651

申请日：2014-07-28

Applicant: Hyundai Motor Company

Inventor： Sang-Hyeok Yang

IPC: H03F1/02 ,  H03F3/45

CPC classification number: H03F3/45977 ,  H03F3/45475 ,  H03F2200/78 ,  H03F2203/45008 ,  H03F2203/45528 ,  H03F2203/45594

Abstract: An apparatus of correcting an offset for a differential amplifier which compensates a direct current (DC) offset voltage in a differential analog signal amplifier using a resistive feedback structure to minimize a deviation and a method thereof are provided. The apparatus includes a differential amplifier that is configured to amplify a common DC voltage input via a first resistor and a second resistor with a predetermined amplification factor to output the amplified voltage. A controller is configured to compare voltages output from both output terminals of the differential amplifier to determine whether to generate an offset. In addition, the offset is corrected using a switching unit coupled in parallel to an input terminal of the differential amplifier in response to detecting a generated offset. The controller is also configured to adjust an asymmetric property of the input terminal of the differential amplifier to correct the generated offset.

公开(公告)号：US09729117B2

公开(公告)日：2017-08-08

申请号：US14741352

申请日：2015-06-16

Applicant: Conexant Systems, LLC

Inventor： Chandrashekar Reddy

IPC: H03G3/30 ,  H03F3/45 ,  H03G1/00 ,  H03G1/04 ,  H03G3/00

CPC classification number: H03G3/30 ,  H03F3/45475 ,  H03F3/45771 ,  H03F2200/129 ,  H03F2203/45212 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03F2203/45616 ,  H03G1/0088 ,  H03G1/04 ,  H03G3/001

Abstract: A system that utilizes an amplified signal is disclosed that includes a plurality of first switches coupled to a plurality of first impedances. A plurality of second switches coupled to a plurality of second impedances. An amplifier having a first input coupled to the plurality of first switches and a second input coupled to the plurality of second switches. A leakage current offset source coupled to the first input of the amplifier, wherein the leakage current offset source cancels a leakage current component of a first current provided from the plurality of first switches to the first input.