专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09979354B2 Audio amplifier using multi-level pulse width modulation 有权
公开(公告)号：US09979354B2
公开(公告)日：2018-05-22
申请号：US15344151
申请日：2016-11-04
申请人： Merus Audio ApS
发明人： Mikkel Høyerby
IPC分类号： H03F99/00 , H03F1/02 , H03F3/217 , H03F3/187 , H04R3/02
CPC分类号： H03F1/0244 , H02M7/487 , H03F3/00 , H03F3/187 , H03F3/2173 , H03F3/2178 , H03F2200/03 , H03F2200/267 , H03F2200/333 , H04R3/02
摘要： The present invention relates in one aspect to a class D audio amplifier with improved output driver topology supporting multi-level output signals such as 3-level, 4-level or 5-level pulse width or pulse density modulated output signals for application to a loudspeaker load. The present class D audio amplifiers are particularly well-suited for high-volume consumer audio applications and solutions.

2. 发明申请

US20180123622A1 SYSTEM FOR AND METHOD OF REDUCING TRANSMIT SIGNAL DISTORTION 审中-公开
公开(公告)号：US20180123622A1
公开(公告)日：2018-05-03
申请号：US15363841
申请日：2016-11-29
申请人： BROADCOM CORPORATION
发明人： Loke K. Tan , Takayuki Hayashi , Lin He , Giuseppe Cusmai , Chun-ying Chen
IPC分类号： H04B1/04 , H04B7/005
CPC分类号： H04B1/0475 , H03F1/32 , H03F3/00 , H03F3/189 , H03F3/24 , H03F2200/451 , H03F2200/453 , H04B2001/0408 , H04L27/368 , H04W52/52
摘要： Systems and methods relate to providing a transmit signal. The transmit signal can be provided in a transmitter circuit including a main pre-equalizer, a main power amplifier in communication with the main pre-equalizer, a replica pre-equalizer, and a replica power amplifier in communication with the replica pre-equalizer. The replica preamplifier is in communication with the main pre-equalizer, and control signals are provided to the main pre-equalizer to reduce distortion. The control signals are provided in response to an output signal of the replica power amplifier.

3. 发明授权

US09531291B2 Transmission-line resistance compression networks and related techniques 有权
标题翻译：传输线电阻压缩网络及相关技术
公开(公告)号：US09531291B2
公开(公告)日：2016-12-27
申请号：US14255427
申请日：2014-04-17
申请人： Eta Devices, Inc.
发明人： David J. Perreault
IPC分类号： H03H7/38 , H02M7/217 , H03F3/00 , H02M7/06 , H03F3/195 , H03F3/21 , H03F3/24 , H03F3/60
CPC分类号： H02M7/217 , H02M7/06 , H03F1/02 , H03F3/00 , H03F3/195 , H03F3/211 , H03F3/24 , H03F3/245 , H03F3/602 , H03F2200/06 , H03F2200/09 , H03F2200/192 , H03F2200/204 , H03F2200/462 , H03H7/38 , Y10T307/25
摘要： Described embodiments provide a transmission-line resistance compression network that includes an input port, a first output port coupled to a first load and a second output port coupled to a second load. The first and second loads may have substantially similar input impedances under substantially similar operating conditions. The transmission-line resistance compression network includes a transmission-line network coupled to the input port, the first output port and the second output port, and includes at least two transmission lines of different lengths. For a first operating range, the resistances at input ports of the first and second loads vary over first and second ratios, respectively. The resistance of the input impedance at the input port of the transmission-line resistance compression network varies over a third ratio that is smaller than at least one of the first and second ratios.
摘要翻译：描述的实施例提供一种传输线路电阻压缩网络，其包括输入端口，耦合到第一负载的第一输出端口和耦合到第二负载的第二输出端口。在基本相似的操作条件下，第一和第二负载可具有基本类似的输入阻抗。传输线电阻压缩网络包括耦合到输入端口，第一输出端口和第二输出端口的传输线网络，并且包括至少两根不同长度的传输线。对于第一操作范围，第一和第二负载的输入端口处的电阻分别在第一和第二比率上变化。在传输线路电阻压缩网络的输入端口处的输入阻抗的电阻变化小于第一和第二比率中的至少一个比率的第三比率。

4. 发明申请

US20150029049A1 ELECTRONIC CIRCUIT 有权
标题翻译：电子电路
公开(公告)号：US20150029049A1
公开(公告)日：2015-01-29
申请号：US14321644
申请日：2014-07-01
申请人： FUJITSU LIMITED
发明人： Takumi DANJO
IPC分类号： H03M1/12
CPC分类号： H03K5/2481 , H03F3/00 , H03K5/249
摘要： An electronic circuit includes: a pair of first transistors in which a first control signal is inputted to at least one of a first control terminal; a comparator circuit that sets electric potentials of a pair of differential output terminals based on an electric current flowing through the pair of first transistors; second transistors that are coupled in series in a path between an electric power source and a node from at least one of the pair of differential output terminals and between the corresponding pair of first transistors, and having a second control terminals to which a second control signal is inputted; first switches that are respectively coupled in series to the second transistors in the path and that are turned ON in synchronization with a clock signal; and a generation circuit that generates the second control signal based on the clock signal.
摘要翻译：电子电路包括：一对第一晶体管，其中第一控制信号被输入到第一控制端中的至少一个; 比较器电路，其基于流过所述一对第一晶体管的电流来设定一对差分输出端子的电位; 第二晶体管，其串联地耦合在来自所述一对差分输出端子中的至少一个的电源和节点之间的路径中，并且在相应的一对第一晶体管之间并且具有第二控制端子，第二控制信号被输入第一开关分别串联耦合到路径中的第二晶体管并且与时钟信号同步地导通; 以及基于时钟信号产生第二控制信号的发生电路。

5. 发明申请

US20180019772A1 PARALLEL USE OF SERIAL CONTROLS IN IMPROVED WIRELESS DEVICES AND POWER AMPLIFIER MODULES 审中-公开
公开(公告)号：US20180019772A1
公开(公告)日：2018-01-18
申请号：US15634841
申请日：2017-06-27
申请人： Skyworks Solutions, Inc.
发明人： Matthew Lee Banowetz , Philip H. Thompson , Edward James Anthony , James Henry Ross
IPC分类号： H04B1/04 , H03G3/00 , H03F3/00
CPC分类号： H04B1/0475 , H03F1/0222 , H03F3/00 , H03F3/19 , H03F3/24 , H03F3/245 , H03F2200/102 , H03F2200/111 , H03F2200/451 , H03G3/00 , H03G3/3042 , H04B1/0458 , H04B1/0483 , H04B2001/0408 , H04B2001/0433 , H04L7/0091 , H04L7/04
摘要： A power amplifier module can include one or more switches, a coupler module, input signal pins, and a controller having first and second output terminals. The input signal pins can receive a voltage input/output signal, a clock input signal, and a data input signal. The controller can (i) set a mode of the one or more switches using a synchronous communication protocol in which the controller outputs a synchronous clock signal on the first output terminal and a data signal on the second output terminal, when the power amplifier module is in a first operating mode, or (ii) set a mode of the coupler module using an asynchronous communication protocol in which the controller outputs a first asynchronous control signal on the first output terminal and a second asynchronous control signal on the second output terminal, when the power amplifier module is in a second operating mode.

6. 发明申请

US20170117851A1 AUDIO AMPLIFIER USING MULTI-LEVEL PULSE WIDTH MODULATION 有权
公开(公告)号：US20170117851A1
公开(公告)日：2017-04-27
申请号：US15344151
申请日：2016-11-04
申请人： Merus Audio ApS
发明人： Mikkel Høyerby
IPC分类号： H03F1/02 , H03F3/187 , H04R3/02 , H03F3/217
CPC分类号： H03F1/0244 , H02M7/487 , H03F3/00 , H03F3/187 , H03F3/2173 , H03F3/2178 , H03F2200/03 , H03F2200/267 , H03F2200/333 , H04R3/02
摘要： The present invention relates in one aspect to a class D audio amplifier with improved output driver topology supporting multi-level output signals such as 3-level, 4-level or 5-level pulse width or pulse density modulated output signals for application to a loudspeaker load. The present class D audio amplifiers are particularly well-suited for high-volume consumer audio applications and solutions.

7. 发明授权

US09276475B2 Switched mode assisted linear regulator with decoupled output impedance and signal path bandwidth 有权
标题翻译：开关模式辅助线性稳压器，具有去耦输出阻抗和信号路径带宽
公开(公告)号：US09276475B2
公开(公告)日：2016-03-01
申请号：US13963407
申请日：2013-08-09
申请人： Texas Instruments Incorporated
发明人： Carsten Barth , John Hoversten , Steven Berg , Vahid Yousefzadeh , Arie Van Staveren , Bert Helleman
IPC分类号： H02M3/158 , H02M1/00 , H02M3/156
CPC分类号： H02M3/1584 , G01F1/00 , H02M3/1588 , H02M5/293 , H02M2001/0045 , H02M2003/1566 , H03F1/0227 , H03F3/00 , H03F3/2173 , H03F2200/432 , Y02B70/1466
摘要： A switched mode assisted linear (SMAL) amplifier/regulator architecture can be configured to supply regulated power to a dynamic load, such as an RF power amplifier. Embodiments of a SMAL regulator can include a linear amplifier and a switched mode converter parallel coupled at a supply node, and configured such that the amplifier sets load voltage, while the amplifier and the switched converter are cooperatively controlled to supply load current. The amplifier can include separate feedback loops: an external relatively lower speed feedback loop for controlling signal path bandwidth, and an internal relatively higher speed feedback loop for controlling output impedance bandwidth of the linear amplifier. The linear amplifier can be AC coupled to the supply node, and the switched converter can be configured with a capacitive charge control loop that controls the switched converter to effectively control the amplifier to provide capacitive charge control.
摘要翻译：开关模式辅助线性（SMAL）放大器/调节器架构可以配置为向动态负载（例如RF功率放大器）提供稳压电源。 SMAL调节器的实施例可以包括在供电节点处并联耦合的线性放大器和开关模式转换器，并且被配置为使得放大器设置负载电压，同时协调地控制放大器和开关转换器以提供负载电流。放大器可以包括单独的反馈回路：用于控制信号路径带宽的外部相对较低速度的反馈回路，以及用于控制线性放大器的输出阻抗带宽的内部相对较高速度的反馈回路。线性放大器可以交流耦合到电源节点，并且开关转换器可以配置有电容性电荷控制环路，其控制开关转换器以有效地控制放大器以提供电容充电控制。

8. 发明授权

US09154120B2 Electronic circuit 有权
标题翻译：电子电路
公开(公告)号：US09154120B2
公开(公告)日：2015-10-06
申请号：US14321644
申请日：2014-07-01
申请人： FUJITSU LIMITED
发明人： Takumi Danjo
IPC分类号： H03K19/0175 , H03K5/24 , H03F3/00
CPC分类号： H03K5/2481 , H03F3/00 , H03K5/249
摘要： An electronic circuit includes: a pair of first transistors in which a first control signal is inputted to at least one of a first control terminal; a comparator circuit that sets electric potentials of a pair of differential output terminals based on an electric current flowing through the pair of first transistors; second transistors that are coupled in series in a path between an electric power source and a node from at least one of the pair of differential output terminals and between the corresponding pair of first transistors, and having a second control terminals to which a second control signal is inputted; first switches that are respectively coupled in series to the second transistors in the path and that are turned ON in synchronization with a clock signal; and a generation circuit that generates the second control signal based on the clock signal.
摘要翻译：电子电路包括：一对第一晶体管，其中第一控制信号被输入到第一控制端中的至少一个; 比较器电路，其基于流过所述一对第一晶体管的电流来设定一对差分输出端子的电位; 第二晶体管，其串联地耦合在来自所述一对差分输出端子中的至少一个的电源和节点之间的路径中，并且在相应的一对第一晶体管之间并且具有第二控制端子，第二控制信号被输入第一开关分别串联耦合到路径中的第二晶体管并且与时钟信号同步地导通; 以及基于时钟信号产生第二控制信号的发生电路。

9. 发明申请

US20150280672A1 LOW NOISE AMPLIFIER AND RECEIVER 有权
标题翻译：低噪声放大器和接收器
公开(公告)号：US20150280672A1
公开(公告)日：2015-10-01
申请号：US14228661
申请日：2014-03-28
申请人： ADVANCED SEMICONDUCTOR ENGINEERING INC.
发明人： JAW-MING DING , JIA-HONG MOU
IPC分类号： H03G3/30 , H03F1/02 , H03F3/19
CPC分类号： H03G3/3036 , H03F1/0205 , H03F1/223 , H03F3/00 , H03F3/19 , H03F3/193 , H03F2200/294 , H03F2200/451
摘要： A low noise amplifier is disclosed. The low noise amplifier comprises a current mirror circuit, a bias circuit, a cascode amplifying circuit and a power gain compensating circuit. The current mirror circuit is used for providing a first current and third current. The bias circuit is used for receiving a first current and third current and outputting a first bias voltage and a second bias voltage according to the first current and third current. The cascode amplifying circuit respectively receives the first bias voltage and the second bias voltage, and accordingly to work at an operation bias point. The power gain compensating circuit is used for receiving a RF output signal and accordingly outputs a gain compensating signal to the current mirror circuit so as to dynamically adjust current value of the first current and third current and further to compensates power gain of the low noise amplifier in order to increase 1 dB gain compression point (P1dB).
摘要翻译：公开了一种低噪声放大器。低噪声放大器包括电流镜电路，偏置电路，共源共栅放大电路和功率增益补偿电路。电流镜电路用于提供第一电流和第三电流。偏置电路用于接收第一电流和第三电流，并且根据第一电流和第三电流输出第一偏置电压和第二偏置电压。共源共栅放大电路分别接收第一偏置电压和第二偏置电压，并因此在工作偏压点工作。功率增益补偿电路用于接收RF输出信号，并且相应地向电流镜电路输出增益补偿信号，以便动态地调节第一电流和第三电流的电流值，并进一步补偿低噪声放大器的功率增益以增加1 dB增益压缩点（P1dB）。

10. 发明申请

US20140312963A1 SWITCHABLE CURRENT SOURCE CIRCUIT AND METHOD 有权
标题翻译：可切换电流源电路和方法
公开(公告)号：US20140312963A1
公开(公告)日：2014-10-23
申请号：US14201581
申请日：2014-03-07
申请人： NXP B.V.
发明人： Marco Berkhout
IPC分类号： G05F3/02
CPC分类号： G05F3/02 , G05F3/262 , H03F3/00 , H03K17/04206
摘要： a switchable current source in which a reference voltage value to be used in driving the gate of an output transistor is sampled and stored. The reference voltage is derived using a reference current source which feeds a current sensing transistor. The current sensing transistor is turned off when the output transistor is turned off, so that the reference current source then does not consume power. A large reference current Iref can then be used for a short time.
摘要翻译：其中采样并存储用于驱动输出晶体管的栅极的参考电压值的可切换电流源。使用馈送电流感测晶体管的参考电流源导出参考电压。当输出晶体管截止时，电流检测晶体管截止，使得参考电流源不消耗功率。然后可以在短时间内使用大的参考电流Iref。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式