公开(公告)号：US09935587B2

公开(公告)日：2018-04-03

申请号：US15144455

申请日：2016-05-02

Applicant: FCI INC

Inventor： DongHyun Ko ,  Myung Woon Hwang

IPC: H03F3/04 ,  H03F3/26 ,  H03F1/30 ,  H03F3/193 ,  H03F1/32 ,  H03F3/30

CPC classification number: H03F1/303 ,  H03F1/301 ,  H03F1/302 ,  H03F1/307 ,  H03F1/308 ,  H03F1/3217 ,  H03F3/193 ,  H03F3/3011 ,  H03F3/3066 ,  H03F3/3076 ,  H03F2200/18 ,  H03F2200/294 ,  H03F2200/318 ,  H03F2200/451 ,  H03F2203/30084 ,  H03F2203/30117

Abstract: An inductor-less low noise amplifier (LNA) with high linearity is disclosed. The low noise amplifier includes: an input signal stage receiving an input signal; a first amplifier configured to receive the input signal, generate a first amplification signal by amplifying the received input signal, and output the generated first amplification signal, as a first output signal, to a first output terminal; a second amplifier configured to receive the input signal, generate a second amplification signal by amplifying the received input signal, and output the generated second amplification signal, as a second output signal, to a second output terminal; an output signal stage outputting a superimposition signal obtained by superimposing the first output signal and the second output signal; a first resistor feeding back the superimposition signal to the input signal stage; and a switch connecting/disconnecting between the input signal stage and the output signal stage.

公开(公告)号：US20170324383A1

公开(公告)日：2017-11-09

申请号：US15533003

申请日：2014-12-04

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Henrik SJOLAND

IPC: H03F1/32 ,  H03F3/193 ,  H03F3/30 ,  H04B1/16

CPC classification number: H03F1/3217 ,  H03F3/193 ,  H03F3/265 ,  H03F3/3028 ,  H03F3/3032 ,  H03F3/3071 ,  H03F3/3076 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/30003 ,  H03F2203/30031 ,  H03F2203/30051 ,  H03F2203/30057 ,  H04B1/16

Abstract: An integrated circuit comprises a first amplifier circuit with a push-pull amplifier configured to be calibrated to a low second order distortion. The integrated circuit further comprises a second amplifier circuit with at least one push-pull amplifier, wherein a size ratio between sizes of the transistors is adjustable by adjusting the size of at least one transistor device. The size ratio can be consecutively adjusted to a plurality of values, and for each value, a first output signal of a push-pull amplifier with an applied test signal and a second output signal of a push-pull amplifier without applied test signal, are determined. The size ratio for which a difference between the push-pull amplifier output signals is closest to zero is determined, and the push-pull amplifier of the first amplifier circuit is calibrated in dependence of the determined size ratio.

公开(公告)号：US09438181B1

公开(公告)日：2016-09-06

申请号：US14805454

申请日：2015-07-21

Applicant: David D. Baker ,  James C. Strickland

Inventor： David D. Baker ,  James C. Strickland

IPC: H03F3/217 ,  H03F3/181

CPC classification number: H03F1/3217 ,  H03F1/0222 ,  H03F1/0233 ,  H03F3/183 ,  H03F3/185 ,  H03F3/3064 ,  H03F2200/03

Abstract: Disclosed boost amplifiers are used with a BTL amplifier that outputs balanced audio signals and that has an output current capacity and a dynamic power capacity. Disclosed amplifiers include an audio amplifier with a dynamic power capacity and that amplifies the balanced audio signals and applies them to a load, at least one diode that receives audio signals and produces single-ended input power signals, and at least one regulator that converts the single-ended input power signal into a regulated power signal of a higher magnitude. The boost regulator presenting a variable input impedance to the BTL amplifier such that the output current capacity of the BTL amplifier is not exceeded. Disclosed amplifiers also include a DC power reservoir that stores power from the regulated power signal and supplies sufficient power that the dynamic output power capacity of the audio amplifier exceeds the dynamic power capacity of the BTL amplifier.

Abstract translation: 公开的升压放大器用于输出平衡音频信号并具有输出电流容量和动态功率容量的BTL放大器。 公开的放大器包括具有动态功率容量的音频放大器，并放大平衡音频信号并将其施加到负载，至少一个二极管，其接收音频信号并产生单端输入功率信号;以及至少一个调节器，其将 单端输入功率信号变成更大幅度的稳压功率信号。 升压调节器向BTL放大器呈现可变输入阻抗，使得不超过BTL放大器的输出电流容量。 所公开的放大器还包括一个DC电力储存器，其存储来自稳压电源信号的电力，并且提供足够的功率，音频放大器的动态输出功率容量超过BTL放大器的动态功率容量。

公开(公告)号：US09203423B2

公开(公告)日：2015-12-01

申请号：US13972920

申请日：2013-08-22

Applicant: MEDIATEK INC.

Inventor： Wen-Hua Chang

IPC: H03B1/00 ,  H03M1/66 ,  H03F1/02 ,  H03F1/32 ,  H03F3/30

CPC classification number: H03M1/66 ,  H03F1/0272 ,  H03F1/3205 ,  H03F1/3217 ,  H03F3/303 ,  H03F2200/129 ,  H03F2200/91 ,  H03F2203/30031 ,  H03F2203/30078 ,  H03F2203/30111

Abstract: A signal generation apparatus includes a digital-to-analog converter, a bias stage and a class AB output stage. The digital-to-analog converter is arranged for outputting a current as an input signal. The bias stage is coupled to the digital-to-analog converter, and is arranged for generating a bias signal according to at least the input signal. The class AB output stage is coupled to the bias stage, and is arranged for generating an output signal at an output node of the signal generation apparatus according to the bias signal, wherein the output signal includes a first signal component and a second signal component, both the first signal component and the second signal component correspond to the input signal, and there is a linear relation between the output signal and the input signal.

Abstract translation: 信号发生装置包括数模转换器，偏置级和AB类输出级。 数模转换器用于输出电流作为输入信号。 偏置级耦合到数模转换器，并且被布置为根据至少输入信号产生偏置信号。 AB类输出级耦合到偏置级，并且被配置为根据偏置信号在信号发生装置的输出节点处产生输出信号，其中输出信号包括第一信号分量和第二信号分量， 第一信号分量和第二信号分量都对应于输入信号，并且在输出信号和输入信号之间存在线性关系。

公开(公告)号：US20150054584A1

公开(公告)日：2015-02-26

申请号：US13972920

申请日：2013-08-22

Applicant: MEDIATEK INC.

Inventor： Wen-Hua Chang

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/193 ,  H03M1/06 ,  H03M1/66

CPC classification number: H03M1/66 ,  H03F1/0272 ,  H03F1/3205 ,  H03F1/3217 ,  H03F3/303 ,  H03F2200/129 ,  H03F2200/91 ,  H03F2203/30031 ,  H03F2203/30078 ,  H03F2203/30111

Abstract: A signal generation apparatus includes a digital-to-analog converter, a bias stage and a class AB output stage. The digital-to-analog converter is arranged for outputting a current as an input signal. The bias stage is coupled to the digital-to-analog converter, and is arranged for generating a bias signal according to at least the input signal. The class AB output stage is coupled to the bias stage, and is arranged for generating an output signal at an output node of the signal generation apparatus according to the bias signal, wherein the output signal includes a first signal component and a second signal component, both the first signal component and the second signal component correspond to the input signal, and there is a linear relation between the output signal and the input signal.

Abstract translation: 信号发生装置包括数模转换器，偏置级和AB类输出级。 数模转换器用于输出电流作为输入信号。 偏置级耦合到数模转换器，并且被布置为根据至少输入信号产生偏置信号。 AB类输出级耦合到偏置级，并且被配置为根据偏置信号在信号发生装置的输出节点处产生输出信号，其中输出信号包括第一信号分量和第二信号分量， 第一信号分量和第二信号分量都对应于输入信号，并且在输出信号和输入信号之间存在线性关系。

公开(公告)号：US08552803B2

公开(公告)日：2013-10-08

申请号：US11959209

申请日：2007-12-18

Applicant: Bo Sun ,  Sankaran Aniruddhan

Inventor： Bo Sun ,  Sankaran Aniruddhan

IPC: H03F1/30

CPC classification number: H03F3/3022 ,  H03F1/0272 ,  H03F1/301 ,  H03F1/308 ,  H03F1/3217 ,  H03F3/19 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/435 ,  H03F2200/451 ,  H03F2200/78 ,  H03F2200/99 ,  H03F2203/30015 ,  H03F2203/30027 ,  H03F2203/30061 ,  H03F2203/30147 ,  H03F2203/30153 ,  H03G1/007 ,  H03G3/3042

Abstract: Techniques are provided for dynamically biasing an amplifier to extend the amplifier's operating range while conserving power. In an embodiment, a detector is provided to measure the amplifier output to determine an operating region of the amplifier. The output of the detector may be input to a bias adjuster, which outputs a dynamic voltage level supplied to at least one bias transistor in the amplifier. Multiple embodiments of the detector and bias adjuster are disclosed.

Abstract translation: 提供了技术来动态地偏置放大器以延长放大器的工作范围，同时节省功率。 在一个实施例中，提供检测器来测量放大器输出以确定放大器的工作区域。 检测器的输出可以被输入到偏置调节器，偏置调节器输出提供给放大器中的至少一个偏置晶体管的动态电压电平。 公开了检测器和偏置调节器的多个实施例。

公开(公告)号：US08354886B2

公开(公告)日：2013-01-15

申请号：US13058276

申请日：2009-08-10

Applicant: Johannes Hubertus Antonius Brekelmans

Inventor： Johannes Hubertus Antonius Brekelmans

IPC: H03F3/26

CPC classification number: H03F1/308 ,  H03F1/3217 ,  H03F3/3028 ,  H03F3/345 ,  H03F2203/30003 ,  H03F2203/30033

Abstract: A signal processing arrangement comprises an amplifier (AMP V1) that includes a stage with complementary transistors (MP3, MN3) of opposite conductivity type arranged in series between two supply lines (+, −). A controllable biasing circuit (CCS) is provided for changing a quiescent operating point of the stage as a function of a control signal (CS). A control arrangement measures an even order 5 distortion of the amplifier (AMP V1) and adjusts the control signal (CS) so that the even order distortion is below a critical level.

Abstract translation: 信号处理装置包括放大器（AMP V1），放大器（AMP V1）包括具有串联布置在两条电源线（+， - ）之间的相反导电类型的互补晶体管（MP3，MN3）的平台。 提供了可控偏置电路（CCS），用于根据控制信号（CS）来改变级的静态工作点。 控制装置测量放大器（AMP V1）的偶数阶失真5并调整控制信号（CS），使偶数阶失真低于临界水平。

公开(公告)号：US08149056B2

公开(公告)日：2012-04-03

申请号：US12539644

申请日：2009-08-12

Applicant: Serge Pontarollo ,  Serge Ramet

Inventor： Serge Pontarollo ,  Serge Ramet

IPC: H03F3/18

CPC classification number: H03F3/3027 ,  H03F1/0261 ,  H03F1/308 ,  H03F1/3205 ,  H03F1/3217 ,  H03F1/342 ,  H03F2200/135 ,  H03F2200/453 ,  H03F2200/456 ,  H03F2200/513

Abstract: An amplifier having an output stage with a complementary pair of first and second transistors each coupled to an output node of the amplifier; control circuitry arranged to provide a control signal at a control node of the first transistor based on the voltage at an input node of the amplifier; and adjustment circuitry arranged to adjust the control signal to maintain the current through the first transistor above a minimum value.

Abstract translation: 一种具有输出级的放大器，其具有互补的一对第一和第二晶体管，每个耦合到放大器的输出节点; 控制电路被布置成基于放大器的输入节点处的电压在第一晶体管的控制节点处提供控制信号; 以及调整电路，其布置成调整所述控制信号以将通过所述第一晶体管的电流保持在最小值以上。

公开(公告)号：US08004355B2

公开(公告)日：2011-08-23

申请号：US12713015

申请日：2010-02-25

Applicant: Owen Jones ,  Lawrence R. Fincham

Inventor： Owen Jones ,  Lawrence R. Fincham

IPC: H03F1/24

CPC classification number: H03F3/211 ,  H03F1/0205 ,  H03F1/3217 ,  H03F1/34 ,  H03F1/52 ,  H03F3/187 ,  H03F3/21 ,  H03F3/3069 ,  H03F3/3076 ,  H03F3/45475 ,  H03F2200/129 ,  H03F2200/135 ,  H03F2200/144 ,  H03F2200/405 ,  H03F2200/408 ,  H03F2200/411 ,  H03F2200/426 ,  H03F2200/451 ,  H03F2200/462 ,  H03F2200/481 ,  H03F2200/504 ,  H03F2203/30031 ,  H03F2203/30033 ,  H03F2203/45512 ,  H03F2203/45526 ,  H03F2203/45528

Abstract: A low dissipation, low distortion amplifier includes a driver amplifier stage and a main output stage, with a plurality of impedance networks providing, among other things, feedback paths from outputs of the driver and main output stages to the input of the driver stage. The impedance networks also provide coupling paths from the outputs of the driver and main output stages to the load. The impedance networks can all be formed of resistors, capacitors, or network combinations thereof. An additional feedback path can be added from the load to the driver stage to flatten out the frequency response at low frequencies. The driver and main output stages may be operated in Class AB and B modes respectively, and/or in Class G or H modes. An intermediate amplifier driver stage may be added between the driver and main output stages.

Abstract translation: 低耗散低失真放大器包括驱动器放大器级和主输出级，多个阻抗网络尤其提供从驱动器和主输出级的输出到驱动器级的输入的反馈路径。 阻抗网络还提供从驱动器和主输出级的输出到负载的耦合路径。 阻抗网络都可以由电阻器，电容器或其网络组合形成。 可以从负载向驱动器级添加额外的反馈路径，以在低频率下平坦化频率响应。 驱动器和主输出级可以分别在AB类和B模式中和/或在G或H类模式下操作。 可以在驱动器和主输出级之间添加中间放大器驱动器级。

公开(公告)号：US20110133839A1

公开(公告)日：2011-06-09

申请号：US13058276

申请日：2009-08-10

Applicant: Johannes Hubertus Antonius Brekelmans

Inventor： Johannes Hubertus Antonius Brekelmans

IPC: H03F3/26

CPC classification number: H03F1/308 ,  H03F1/3217 ,  H03F3/3028 ,  H03F3/345 ,  H03F2203/30003 ,  H03F2203/30033

Abstract: A signal processing arrangement comprises an amplifier (AMP V1) that includes a stage with complementary transistors (MP3, MN3) of opposite conductivity type arranged in series between two supply lines (+, −). A controllable biasing circuit (CCS) is provided for changing a quiescent operating point of the stage as a function of a control signal (CS). A control arrangement measures an even order 5 distortion of the amplifier (AMP V1) and adjusts the control signal (CS) so that the even order distortion is below a critical level.

Abstract translation: 信号处理装置包括放大器（AMP V1），放大器（AMP V1）包括具有串联布置在两条电源线（+， - ）之间的相反导电类型的互补晶体管（MP3，MN3）的平台。 提供了可控偏置电路（CCS），用于根据控制信号（CS）来改变级的静态工作点。 控制装置测量放大器（AMP V1）的偶数阶失真5并调整控制信号（CS），使偶数阶失真低于临界水平。