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121. 发明授权

US09319008B2 Differential output inductor for class D amplifier 有权
标题翻译： D类放大器的差分输出电感
公开(公告)号：US09319008B2
公开(公告)日：2016-04-19
申请号：US14201627
申请日：2014-03-07
申请人： Versatile Power, Inc.
发明人： Alexandr Ikriannikov , David Hoffman , Noah A. Wilson
IPC分类号： H03F3/185 , B06B1/02 , H03F3/217 , H03H7/01
CPC分类号： H03F3/185 , B06B1/0261 , H03F3/217 , H03F2200/03 , H03H7/0115
摘要： A circuit includes a first input terminal for receiving a first pulsed voltage and a second input terminal for receiving a second pulsed voltage. The circuit further includes a load and an LC filter. The LC filter includes a coupled inductor pair that includes a first winding and a second winding magnetically coupled to each other. The first winding is coupled between the first input terminal and the load, and the second winding is coupled between the second input terminal and the load. A frequency of a first current flowing through the first winding is increased by the second pulsed voltage applied to the second winding.
摘要翻译：电路包括用于接收第一脉冲电压的第一输入端和用于接收第二脉冲电压的第二输入端。电路还包括负载和LC滤波器。 LC滤波器包括耦合电感器对，其包括彼此磁耦合的第一绕组和第二绕组。第一绕组耦合在第一输入端和负载之间，第二绕组耦合在第二输入端和负载之间。通过施加到第二绕组的第二脉冲电压来增加流过第一绕组的第一电流的频率。

122. 发明授权

US09312818B2 Low-noise amplifier 有权
标题翻译：低噪声放大器
公开(公告)号：US09312818B2
公开(公告)日：2016-04-12
申请号：US14375127
申请日：2013-01-25
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Sven Mattisson , Stefan Andersson
IPC分类号： H03F1/34 , H03F1/30 , H03F1/26 , H03F3/195 , H03F1/56 , H03F3/185
CPC分类号： H03F1/301 , H03F1/26 , H03F1/342 , H03F1/565 , H03F3/185 , H03F3/195 , H03F2200/129 , H03F2200/294 , H03F2200/384 , H03F2200/75
摘要： A common source or common emitter LNA circuit for amplifying signals at an operating frequency f in a receiver circuit is disclosed. The LNA circuit comprises an input transistor arranged to, in operation, be biased to have a transconductance gm at the operating frequency f, and having a first terminal, which is a gate or base terminal, operatively connected to an input terminal of the LNA circuit. The LNA circuit further comprises a shunt-feedback capacitor operatively connected between the first terminal of the input transistor and a second terminal, which is a drain or collector terminal, of the input transistor. Furthermore, the LNA circuit comprises an output capacitor operatively connected between the second terminal of the input transistor and an output terminal of the LNA circuit. The output capacitor has a capacitance value CL
摘要翻译：公开了一种用于在接收机电路中以工作频率f放大信号的公共源极或公共发射极LNA电路。 LNA电路包括输入晶体管，其被设置为在操作中被偏置为具有工作频率f处的跨导gm，并且具有可操作地连接到LNA电路的输入端的第一端子，其是栅极或基极端子。 LNA电路还包括可操作地连接在输入晶体管的第一端子和作为输入晶体管的漏极或集电极端子的第二端子之间的并联反馈电容器。此外，LNA电路包括可操作地连接在输入晶体管的第二端子和LNA电路的输出端子之间的输出电容器。输出电容器具有电容值CL

123. 发明申请

US20150381119A1 AUDIO SWITCHING AMPLIFIER 有权
标题翻译：音频开关放大器
公开(公告)号：US20150381119A1
公开(公告)日：2015-12-31
申请号：US14320118
申请日：2014-06-30
申请人： QUALCOMM Incorporated
发明人： Jingxue Lu , Ankit Srivastava , Matthew David Sienko , Manu Mishra , Sheng Zhang
IPC分类号： H03F1/32 , H03F3/217 , H03F3/185
CPC分类号： H03F1/32 , H03F1/3205 , H03F3/185 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/45475 , H03F2200/03 , H03F2200/351 , H03F2203/45512 , H03F2203/45528
摘要： A switching amplifier includes a compensation circuit to compensate for DC offset in the amplifier, to enhance operation of the switching amplifier. The compensation circuit may comprise a SAR ADC, where the DAC element can be used to provide a compensation voltage. The switching amplifier may further include a PWM modulator configured to avoid cross-talk to further enhance operation of the switching amplifier.
摘要翻译：开关放大器包括用于补偿放大器中的DC偏移的补偿电路，以增强开关放大器的操作。补偿电路可以包括SAR ADC，其中DAC元件可用于提供补偿电压。开关放大器还可以包括PWM调制器，其被配置为避免串扰以进一步增强开关放大器的操作。

124. 发明申请

US20150365059A1 CLASS-D AMPLIFIER AND ELECTRONIC APPARATUS 有权
标题翻译： CLASS-D放大器和电子设备
公开(公告)号：US20150365059A1
公开(公告)日：2015-12-17
申请号：US14833546
申请日：2015-08-24
申请人： KYOCERA Corporation
发明人： Tsuneyasu INUKAI
IPC分类号： H03F3/217 , H04R3/00 , H03F1/02 , H04R17/00 , H03F3/185 , H03F3/21
CPC分类号： H03F3/217 , H03F1/0205 , H03F1/0211 , H03F3/185 , H03F3/1855 , H03F3/211 , H03F3/2171 , H03F3/2173 , H03F3/45475 , H03F2200/03 , H03F2200/351 , H03F2200/411 , H03F2203/21106 , H03F2203/45512 , H03F2203/45528 , H03F2203/45552 , H03F2203/45568 , H03F2203/45571 , H03F2203/45594 , H04R3/00 , H04R17/00
摘要： Disclosed is a class-D amplifier including a first output circuit, a first capacitor, a pulse width modulator, and a slew rate limiting amplifier. The first output circuit includes first and second switching devices that are connected in series between first and second power supply lines. The first capacitor is connected between the first and second power supply lines. The pulse width modulator generates a pulse width modulated switching signal based on a triangular wave and an audio signal, and provides the switching signal to the first output circuit. The slew rate limiting amplifier is connected to an input part of the pulse width modulator to which the audio signal is provided, and limits a slew rate of output. The sound-producing device is connected in series to an inductor connected to a first output node of the first output circuit. The sound-producing device and the inductor constitute an LC filter.
摘要翻译：公开了一种D类放大器，包括第一输出电路，第一电容器，脉宽调制器和转换速率限制放大器。第一输出电路包括在第一和第二电源线之间串联连接的第一和第二开关装置。第一电容器连接在第一和第二电源线之间。脉宽调制器基于三角波和音频信号产生脉宽调制切换信号，并向第一输出电路提供切换信号。转换速率限幅放大器连接到提供音频信号的脉冲宽度调制器的输入部分，并限制输出的转换速率。声音产生装置与连接到第一输出电路的第一输出节点的电感器串联连接。声音产生装置和电感器构成LC滤波器。

125. 发明授权

US09190960B2 Audio power amplifier 有权
标题翻译：音频功率放大器
公开(公告)号：US09190960B2
公开(公告)日：2015-11-17
申请号：US14222663
申请日：2014-03-23
申请人： INNOVATIVE ELECTRONIC DESIGNS, LLC
发明人： Hardison G. Martin , Robert A. Ponto
IPC分类号： H03F3/38 , H03F1/02 , H03F3/185 , H03F3/21
CPC分类号： H03F1/0233 , H03F3/085 , H03F3/185 , H03F3/21 , H03F3/217 , H03F3/68 , H03F2200/03 , H03F2200/165 , H03F2200/444 , H03F2200/541
摘要： Improvements to U.S. Pat. No. 5,428,642 including use of a single clock providing a first frequency to drive a power supply and a second frequency, twice the first frequency, to dual channel pulse width modulators and audio amplifiers. The power supply is improved to provide enough output voltage that the amplifier stays below 90% modulation and the first frequency driver eliminates the dead band, thereby improving efficiency. Current limiting, even against shorts in the load, is provided by inductor inputs to the clipper circuits, where the inductors are in the magnetic fields of the output chokes. The audio amplifiers are isolated by optical couplers for the audio signal and by an optical coupler and isolation transformers for the clock. One clock amplifier supplies both amplifier channels. The pulse width modulator uses the optically isolated clock and receives clipped audio directly. Two channels fit in the space of one old channel.
摘要翻译：美国专利的改进包括使用提供第一频率的单个时钟来驱动电源和第二频率（第一频率的两倍）到双通道脉宽调制器和音频放大器。改善电源以提供足够的输出电压，放大器保持低于90％的调制，第一个频率驱动器消除死区，从而提高效率。电流限制，即使是负载短路，由电感器输入提供给限幅电路，其中电感器处于输出扼流圈的磁场中。音频放大器由用于音频信号的光耦合器和用于时钟的光耦合器和隔离变压器隔离。一个时钟放大器提供两个放大器通道。脉宽调制器使用光隔离时钟直接接收限幅音频。两个通道适合一个旧通道的空间。

126. 发明申请

US20150280660A1 MULTI-STAGE SWITCHED-CAPACITOR DC BLOCKING CIRCUIT FOR AUDIO FRONTEND 有权
标题翻译：用于音频保护的多级开关电容直流阻塞电路
公开(公告)号：US20150280660A1
公开(公告)日：2015-10-01
申请号：US14230909
申请日：2014-03-31
申请人： QUALCOMM Incorporated
发明人： Meysam AZIN , Arash MEHRABI , Wenchang HUANG
IPC分类号： H03F3/185 , H03F3/00 , H04R3/00 , H03F3/45
CPC分类号： H03F3/185 , H03F3/005 , H03F3/181 , H03F3/187 , H03F3/45179 , H03F3/45183 , H03F2200/03 , H03F2203/45016 , H03F2203/45514 , H03H19/004 , H04R3/00
摘要： An integrated DC blocking amplifier circuit, including: an operational amplifier configured in a differential amplifier; and at least first and second two-stage switched-capacitor circuits, each two stage switched-capacitor circuit including a first-stage circuit and a second-stage circuit, wherein the first two-stage switched capacitor circuit is connected to a positive feedback path of the operational amplifier and the second two-stage switched capacitor circuit is connected to a negative feedback path of the operational amplifier, wherein the first-stage circuit is switched at a relatively low switching frequency, while the second-stage circuit is switched at a relatively high switching frequency.
摘要翻译：一种集成的DC阻塞放大器电路，包括：配置在差分放大器中的运算放大器; 以及至少第一和第二两级开关电容器电路，每个两级开关电容器电路包括第一级电路和第二级电路，其中所述第一两级开关电容器电路连接到正反馈路径运算放大器和第二两级开关电容器电路连接到运算放大器的负反馈路径，其中第一级电路以相对低的开关频率切换，而第二级电路以开关频率相对较高。

127. 发明申请

US20150263676A1 INTEGRATOR FOR CLASS D AUDIO AMPLIFIER 有权
标题翻译：用于D类音频放大器的集成器
公开(公告)号：US20150263676A1
公开(公告)日：2015-09-17
申请号：US14210905
申请日：2014-03-14
申请人： QUALCOMM Incorporated
发明人： Jingxue Lu , Matthew David Sienko , Ankit Srivastava , Manu Mishra
IPC分类号： H03F1/02 , H03F3/45 , H03F3/185
CPC分类号： H03F1/0233 , H03F1/30 , H03F3/183 , H03F3/185 , H03F3/2173 , H03F3/45076 , H03F2200/03
摘要： An apparatus includes voltage-to-current conversion circuitry comprising a first voltage-to-current converter and a second voltage-to-current converter. The apparatus also includes a capacitor coupled to the first voltage-to-current converter and to the second voltage-to-current converter.
摘要翻译：一种装置包括包括第一电压 - 电流转换器和第二电压 - 电流转换器的电压 - 电流转换电路。该装置还包括耦合到第一电压 - 电流转换器和第二电压 - 电流转换器的电容器。

128. 发明授权

US09136798B2 Method and apparatus for outputting audio signal 有权
标题翻译：用于输出音频信号的方法和装置
公开(公告)号：US09136798B2
公开(公告)日：2015-09-15
申请号：US13653900
申请日：2012-10-17
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Won-hyung Moon , Hae-kwang Park
IPC分类号： H03F5/00 , H03F3/185 , H03F1/32 , H03F3/217
CPC分类号： H03F3/185 , H03F1/327 , H03F3/217 , H03F5/00
摘要： An apparatus for outputting an audio signal with improved sound quality is provided. The apparatus includes a modulation and amplification unit for pulse modulation and switching amplification of an input audio signal and generating an amplified signal which corresponds to the input audio signal; and a vacuum tube amplification unit for inputting a vacuum tube signal generated by attenuating the amplified signal and adding harmonics of a vacuum tube to the amplified signal, to the modulation and amplification unit to provide a mellow sound.
摘要翻译：提供一种用于输出具有改善的音质的音频信号的装置。该装置包括用于脉冲调制和输入音频信号的开关放大并产生对应于输入音频信号的放大信号的调制和放大单元; 以及真空管放大单元，用于输入通过衰减放大的信号而产生的真空管信号，并将真空管的谐波加到放大的信号上，以便向调制和放大单元提供醇厚的声音。

129. 发明授权

US09118280B2 High voltage wide bandwidth amplifier 有权
标题翻译：高压宽带宽放大器
公开(公告)号：US09118280B2
公开(公告)日：2015-08-25
申请号：US14041157
申请日：2013-09-30
申请人： Raytheon Company
发明人： Joe A. Ortiz
IPC分类号： H03F3/185 , H03F3/21 , H03F1/48 , H03F3/08 , H03F3/19 , H03F3/30
CPC分类号： H03F3/185 , H03F1/483 , H03F3/085 , H03F3/19 , H03F3/211 , H03F3/3037 , H03F2200/03 , H03F2200/18 , H03F2200/276 , H03F2203/21131 , H03F2203/30021 , H03F2203/30033 , H03F2203/30066
摘要： A high voltage amplifier and a method of assembling and of operating a high voltage amplifier are described. The device includes a first metal-oxide-semiconductor field-effect transistor (MOSFET) driven by a first gate drive circuit. The device also includes a second MOSFET driven by a second gate drive circuit and a first optocoupler coupled to the second gate drive circuit. The first MOSFET and the second MOSFET of the high voltage amplifier drive a first output voltage.
摘要翻译：描述高压放大器以及组装和操作高压放大器的方法。该器件包括由第一栅极驱动电路驱动的第一金属氧化物半导体场效应晶体管（MOSFET）。该器件还包括由第二栅极驱动电路驱动的第二MOSFET和耦合到第二栅极驱动电路的第一光耦合器。高压放大器的第一个MOSFET和第二个MOSFET驱动第一个输出电压。

130. 发明申请

US20150214902A1 DEVICE AND METHOD FOR REDUCING CLIPPING IN AN AMPLIFIER 有权
标题翻译：用于减小放大器中的剪辑的装置和方法
公开(公告)号：US20150214902A1
公开(公告)日：2015-07-30
申请号：US14534727
申请日：2014-11-06
申请人： STMicroelectronics (Shenzhen) R&D Co. Ltd
发明人： Hong Wu Lin
IPC分类号： H03F1/26 , H03F3/183 , H03F3/217
CPC分类号： H03F1/3205 , H03F3/185 , H03F3/2171 , H03F3/2173 , H03F2200/03 , H03F2200/351 , H03F2200/66
摘要： Limiting clipping in an amplifier is accomplished in the feedback loop of a class D PWM amplifier that includes an integrator coupled to an input node and configured to generate an integrated input signal such that a comparator may then generate a PWM signal for driving an amplifier output stage based on a comparison to a triangle wave signal. To this end, the amplifier also includes a threshold signal generator for generating high and low voltage thresholds based on the triangle wave signal to be used to engage compensation circuits for limiting the overall amplification. Such compensation circuits may be bipolar junction transistors that are disposed in the feedback loop of the integrator. Thus, the overall bandwidth of the amplifier itself is not affected by adding a limiter circuit aimed at reducing clipping.
摘要翻译：在D类PWM放大器的反馈回路中实现限幅放大器的削波，其包括耦合到输入节点并被配置为产生积分输入信号的积分器，使得比较器然后可以产生用于驱动放大器输出级的PWM信号基于与三角波信号的比较。为此，放大器还包括一个阈值信号发生器，用于基于三角波信号产生高和低电压阈值，以用于接合用于限制整个放大的补偿电路。这种补偿电路可以是布置在积分器的反馈回路中的双极结型晶体管。因此，放大器本身的总体带宽不受增加限制电路的影响，目的是减少削波。

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