公开(公告)号：US20240291452A1

公开(公告)日：2024-08-29

申请号：US18572806

申请日：2022-06-13

申请人： RADROCK (SHENZHEN) TECHNOLOGY CO., LTD.

发明人： Yuan Cao ,  Xinghua Rong ,  Chuanqiu Lei ,  Yongjian Lei ,  Jianxing Ni

IPC分类号： H03F3/45 ,  H03F3/24 ,  H03F3/26 ,  H04B1/40

CPC分类号： H03F3/45475 ,  H03F3/245 ,  H03F3/26 ,  H03F2200/451 ,  H04B1/40

摘要： The application discloses an RF front-end module, comprising a conversion transformer, the conversion transformer comprises a primary winding and a secondary winding located on the same metal layer of a substrate; a first primary coil and first secondary coil are coupled to form a first coupling coil, and a second primary coil and second secondary coil are coupled to form a second coupling coil; when the current direction of the side adjacent to the second coupling coil in the first coupling coil is the same as that of the side adjacent to the first coupling coil in the second coupling coil, the first coupling coil and the second coupling coil are arranged adjacent to each other; when these two current directions are opposite to each other, the first coupling coil and the second coupling coil are arranged away from each other.

公开(公告)号：US20240186966A1

公开(公告)日：2024-06-06

申请号：US18073658

申请日：2022-12-02

申请人： Spreadtrum Communications USA Inc.

发明人： Jason X Deng ,  Rattapon Lertpiriyapong

IPC分类号： H03F3/26 ,  H03F1/02 ,  H03F1/56

CPC分类号： H03F3/26 ,  H03F1/0216 ,  H03F1/565 ,  H03F2200/318 ,  H03F2200/451 ,  H03F2200/541 ,  H03F2200/546

摘要： Radio-frequency amplifier circuit including: a first matching circuit; a driver stage circuit, in which the first matching circuit is coupled to the driver stage circuit, and in which the first matching circuit is configured to transform an input impedance of the driver stage circuit into a first impedance at an input to the first matching circuit; an inter-stage matching circuit coupled to the driver stage circuit; an output stage circuit coupled to the inter-stage matching circuit, in which the inter-stage matching circuit is configured to transform an input impedance of the output stage circuit into a second impedance at an output of the driver stage circuit; and and a second matching circuit coupled to the output stage circuit, in which the second matching circuit is configured to transform an impedance at an output of the second matching circuit into a third impedance at the output of the output stage circuit.

公开(公告)号：US20180241348A1

公开(公告)日：2018-08-23

申请号：US15888031

申请日：2018-02-04

申请人： ONKYO Corporation

发明人： Tsuyoshi KAWAGUCHI ,  Norimasa KITAGAWA ,  Takuya OKA

IPC分类号： H03F1/02 ,  H03F3/183 ,  H03F3/21

CPC分类号： H03F1/0205 ,  H03F1/30 ,  H03F1/34 ,  H03F3/181 ,  H03F3/183 ,  H03F3/21 ,  H03F3/26 ,  H03F3/50 ,  H03F2200/03 ,  H03F2200/151 ,  H03F2200/21 ,  H03F2200/408 ,  H03F2203/5036

摘要： A first circuit unit of an audio amplifier includes a first emitter follower connected to an pre stage input terminal, a second emitter follower connected to an pre stage input terminal, a main transistor connected to an output path of the first emitter follower and an output path of the second emitter follower, a first resistor and a second resistor, which are series-connected between the output path of the first emitter follower and a DC voltage source, and a zener diode connected to a series-connection point between the first resistor and the second resistor. A second circuit unit has a circuit configuration that is complementary to the first circuit unit. A path leading to a collector of each transistor configuring the first and second emitter followers in one of the circuit units is connected to the series-connection point in the other circuit unit.

公开(公告)号：US20170338781A1

公开(公告)日：2017-11-23

申请号：US15487384

申请日：2017-04-13

申请人： SKYWORKS SOLUTIONS, INC.

发明人： Aleksey A. LYALIN ,  Taesong HWANG ,  Russ Alan REISNER ,  Nicholas Quinn MUHLMEYER

IPC分类号： H03F3/30 ,  H03F3/26 ,  H03F1/07 ,  H03F3/193 ,  H03G11/00 ,  H03F3/66

CPC分类号： H03F3/3098 ,  H03F1/0288 ,  H03F1/07 ,  H03F3/193 ,  H03F3/1935 ,  H03F3/245 ,  H03F3/26 ,  H03F3/265 ,  H03F3/66 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/7209 ,  H03G11/004

摘要： Power amplification system is disclosed. A power amplification system can include a Class-E push-pull amplifier including a transformer balun. The power amplification can further include a reactance compensation circuit coupled to the transformer balun. In some embodiments, the reactance compensation circuit is configured to reduce variation over frequency of a fundamental load impedance of the power amplification system.

公开(公告)号：US20170149431A1

公开(公告)日：2017-05-25

申请号：US15108593

申请日：2015-12-22

申请人： BOE TECHNOLOGY GROUP CO., LTD. ,  BEIJING BOE ENERGY TECHNOLOGY CO., LTD.

发明人： Qingmeng WANG ,  Xiaoyan HAN

IPC分类号： H03K17/78 ,  H03F3/26 ,  H03K5/08 ,  H03F3/21 ,  H03F1/52

CPC分类号： H03K17/78 ,  H03F1/52 ,  H03F3/08 ,  H03F3/21 ,  H03F3/26 ,  H03F3/3069 ,  H03K5/08 ,  H03K17/163 ,  H03K17/168 ,  H03K17/603

摘要： The present disclosure provides an IGBT driving circuit, including an optocoupler chip and a power amplification circuit. The optocoupler chip includes an isolation amplification unit and a fault protection unit, and the fault protection unit includes a desaturation module and a fault feedback module. The desaturation module is configured to transmit a warning signal to the fault feedback module when detecting that a potential of a collector of the IGBT is overhigh or the potential of the collector of the IGBT changes overfast. The fault feedback module is configured to transmit a fault control signal to the external controller after receiving the warning signal so as to control the external driving signal outputted by the external controller and enable the isolation amplification unit to output an IGBT driving signal for controlling a shutdown of the IGBT.

公开(公告)号：US09601050B2

公开(公告)日：2017-03-21

申请号：US14342023

申请日：2013-04-26

申请人： BOE TECHNOLOGY GROUP CO., LTD.

发明人： Zhongyuan Wu ,  Danna Song

IPC分类号： G09G3/32 ,  G09G3/3225 ,  G09G3/3233 ,  H03F3/26 ,  H03F3/45

CPC分类号： G09G3/3225 ,  G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045 ,  H03F3/26 ,  H03F3/45

摘要： An external-compensation sensing circuit, sensing method, and display device. The circuit includes fully-differential operational amplifier, first capacitor, second capacitor and outputting circuit for amplifying induced current; negative input of the amplifier is connected to display screen, positive input thereof is connected to reference voltage, negative output thereof is connected to first control terminal of the outputting circuit, positive output thereof is connected to second control terminal of the outputting circuit; two terminals of the first capacitor are connected to the negative input of the amplifier and an input of the outputting circuit respectively; one terminal of the second capacitor is connected to the output of the outputting circuit and the other terminal is grounded. The invention enables the output voltage to respond rapidly by amplifying induced current with dual outputting stages in the sensing circuit to raise the speed of the external-compensation.

公开(公告)号：US09548704B1

公开(公告)日：2017-01-17

申请号：US14984042

申请日：2015-12-30

申请人： International Business Machines Corporation

发明人： Roee Ben-Yishay ,  Oded Katz

IPC分类号： H03F1/56 ,  H03F3/19 ,  H03F3/217

CPC分类号： H03F1/56 ,  H03F3/19 ,  H03F3/26 ,  H03F3/72 ,  H03F2200/06 ,  H03F2200/453 ,  H03F2203/7215 ,  H03F2203/7236

摘要： Aspects of the present invention include a circuit that includes an input balun circuit responsive to an input signal, the input balun circuit being configured to provide two output signals that are out of phase with each other. The circuit further includes an actual switched amplification stage configured to direct one of the balun output signals to a phase inverter output, and a replica switched amplification stage connected in parallel with the actual switched amplification stage, wherein the actual switched amplification stage and the replica switched amplification stage are responsive to the two output signals from the input balun circuit to direct one of the balun output signals to the phase inverter output, and wherein the actual switched amplification stage and the replica switched amplification stage are configured to have a constant load impedance for both switch states that matches an impedance of the input balun circuit.

摘要翻译： 本发明的方面包括一种包括响应于输入信号的输入平衡 - 不平衡变换电路的电路，所述输入平衡 - 不平衡变换器电路被配置为提供彼此不同相的两个输出信号。 该电路还包括实际开关放大级，其被配置为将一个平衡不平衡变换器输出信号引导到相位逆变器输出端，以及与实际开关放大级并联连接的复制开关放大级，其中实际开关放大级和复制开关 放大级响应于来自输入平衡 - 不平衡变换器电路的两个输出信号，以将一个平衡 - 不平衡变换器输出信号引导到相位逆变器输出，并且其中实际开关放大级和复制开关放大级被配置为具有恒定的负载阻抗 两个开关状态都与输入平衡 - 不平衡转换电路的阻抗相匹配。

公开(公告)号：US09496832B2

公开(公告)日：2016-11-15

申请号：US14598927

申请日：2015-01-16

申请人： SnapTrack, Inc.

发明人： Martin Paul Wilson

IPC分类号： H03F1/07 ,  H03F3/26 ,  H03F3/195 ,  H03F3/30 ,  H03F1/02 ,  H03F1/42 ,  H03F3/21

CPC分类号： H03F3/26 ,  H03F1/0205 ,  H03F1/42 ,  H03F3/195 ,  H03F3/211 ,  H03F3/265 ,  H03F3/3028 ,  H03F2200/36 ,  H03F2203/21106 ,  H03F2203/21112 ,  H03F2203/30006

摘要： There is provided an amplifier arrangement comprising: a main amplifier connected to receive an input signal and generate an amplified version of the input signal; an additional amplifier, having a smaller geometry than the main amplifier, connected to receive the input signal and generate an amplified version thereof; and wherein the outputs of the main amplifier and the additional amplifier are combined to provide an amplified output.

摘要翻译： 提供了一种放大器装置，包括：主放大器，被连接以接收输入信号并产生输入信号的放大版本; 具有比主放大器更小的几何形状的附加放大器，被连接以接收输入信号并产生其放大版本; 并且其中主放大器和附加放大器的输出被组合以提供放大的输出。

公开(公告)号：US09401707B1

公开(公告)日：2016-07-26

申请号：US14675936

申请日：2015-04-01

申请人： QUALCOMM Incorporated

发明人： Yu Song ,  Liang Dai

IPC分类号： H03K17/16

CPC分类号： H03K17/165 ,  H03F1/0233 ,  H03F1/307 ,  H03F1/3217 ,  H03F3/26

摘要： A push-pull driver is provided with a differential amplifier that amplifies a difference between an input voltage and an output voltage to drive a bias node coupled to a diode-connected bias transistor. The push-pull driver is configured to control the drain-to-source voltage for a source-follower output transistor having its gate tied to a gate for the diode-connected bias transistor to be proportional to the drain-to-source voltage for the diode-connected bias transistor. This proportionality prevents excessive static current variation that would otherwise be present in the source-follower output transistor.

摘要翻译： 推挽驱动器设置有差分放大器，其放大输入电压和输出电压之间的差以驱动耦合到二极管连接的偏置晶体管的偏置节点。 推挽驱动器被配置为控制源极跟随器输出晶体管的漏极 - 源极电压，其栅极连接到二极管连接的偏置晶体管的栅极与源极 - 源极电压成比例 二极管连接的偏置晶体管。 这种比例性可以防止在源极跟随器输出晶体管中存在的过大的静态电流变化。

公开(公告)号：US20160117980A1

公开(公告)日：2016-04-28

申请号：US14342023

申请日：2013-04-26

申请人： BOE TECHNOLOGY GROUP CO., LTD.

发明人： Zhongyuan WU ,  Danna SONG

IPC分类号： G09G3/32

CPC分类号： G09G3/3225 ,  G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045 ,  H03F3/26 ,  H03F3/45

摘要： An external-compensation sensing circuit, sensing method, and display device. The circuit includes fully-differential operational amplifier, first capacitor, second capacitor and outputting circuit for amplifying induced current; negative input of the amplifier is connected to display screen, positive input thereof is connected to reference voltage, negative output thereof is connected to first control terminal of the outputting circuit, positive output thereof is connected to second control terminal of the outputting circuit; two terminals of the first capacitor are connected to the negative input of the amplifier and an input of the outputting circuit respectively; one terminal of the second capacitor is connected to the output of the outputting circuit and the other terminal is grounded. The invention enables the output voltage to respond rapidly by amplifying induced current with dual outputting stages in the sensing circuit to raise the speed of the external-compensation.

摘要翻译： 外部补偿感测电路，感测方法和显示装置。 该电路包括全差分运算放大器，第一电容器，第二电容器和用于放大感应电流的输出电路; 放大器的负输入连接到显示屏，其正输入连接到参考电压，其负输出连接到输出电路的第一控制端，其正输出连接到输出电路的第二控制端; 第一电容器的两个端子分别连接到放大器的负输入端和输出电路的输入端; 第二电容器的一个端子连接到输出电路的输出，另一个端子接地。 本发明通过在感测电路中通过放大具有双输出级的感应电流来使输出电压快速响应，以提高外部补偿的速度。