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21. 发明申请

US20060125545A1 Analog multiplexing 有权
标题翻译：模拟复用
公开(公告)号：US20060125545A1
公开(公告)日：2006-06-15
申请号：US11350417
申请日：2006-02-09
申请人： Michael Hopkins
发明人： Michael Hopkins
IPC分类号： H03K17/76
CPC分类号： H03F3/45085 , H03F3/211 , H03F3/45475 , H03F3/72 , H03F2200/552 , H03F2200/78 , H03F2203/45138 , H03F2203/45506 , H03F2203/45592 , H03F2203/45616 , H03K17/005
摘要： A multiplexer circuit includes a plurality of switched differential amplifier circuits, one of which can be selected at a time. Each switched differential amplifier includes a pair of differential inputs and a pair of differential outputs, with each pair of differential inputs accepting a corresponding pair of input signals. Each of the switched differential amplifier circuits is configured to present a current mode version of its input signals at its differential outputs when the switched differential amplifier circuit is selected, and to present substantially zero level output signals at its differential outputs when the switched differential amplifier circuit is deselected. The multiplexer circuit also includes a selector that accepts a select signal and selects one of the plurality of switched differential amplifier circuits based on said select signal. A current mirror is used to combine a pair of multiplexer outputs into a single ended output, a version of which is used for feedback.
摘要翻译：多路复用器电路包括多个开关差分放大器电路，其中一个可以一次选择。每个开关差分放大器包括一对差分输入和一对差分输出，每对差分输入接受一对相应的输入信号。每个开关差分放大器电路被配置为当选择开关差分放大器电路时在其差分输出处呈现其输入信号的电流模式版本，并且当开关差分放大器电路在差分输出时呈现基本上为零电平的输出信号被取消选择。复用器电路还包括接收选择信号并基于所述选择信号选择多个开关差分放大器电路之一的选择器。电流镜用于将一对多路复用器输出组合成单端输出，其版本用于反馈。

22. 发明授权

US4547799A Feedback kinescope driver 失效
标题翻译：反馈显像管驱动程序
公开(公告)号：US4547799A
公开(公告)日：1985-10-15
申请号：US532335
申请日：1983-05-31
申请人： Robert L. Rodgers, III
发明人： Robert L. Rodgers, III
IPC分类号： H03F3/34 , H03F3/19 , H04N5/14 , H04N9/64 , H04N9/20
CPC分类号： H03F1/22 , H03F3/19 , H04N9/648 , H03F2200/552
摘要： A kinescope driver stage includes an input amplifier transistor arranged in a cascode amplifier configuration with an output amplifier transistor. The low impedance emitter electrode of the input transistor is coupled to a reference potential via an impedance network. Degenerative feedback is provided from the impedance network to input circuits of the input amplifier.
摘要翻译：显像管驱动器级包括以串联放大器配置布置的具有输出放大器晶体管的输入放大器晶体管。输入晶体管的低阻抗发射极通过阻抗网络耦合到参考电位。从阻抗网络向输入放大器的输入电路提供退化反馈。

23. 发明授权

US09692363B2 RF power transistors with video bandwidth circuits, and methods of manufacture thereof 有权
公开(公告)号：US09692363B2
公开(公告)日：2017-06-27
申请号：US14919511
申请日：2015-10-21
申请人： FREESCALE SEMICONDUCTOR, INC.
发明人： Ning Zhu , Damon G. Holmes , Jeffrey K. Jones
IPC分类号： H03F3/04 , H03F1/56 , H03F3/19
CPC分类号： H03F1/565 , H01L23/66 , H01L2223/6655 , H01L2224/48091 , H01L2224/49175 , H03F3/19 , H03F3/195 , H03F2200/108 , H03F2200/181 , H03F2200/216 , H03F2200/222 , H03F2200/225 , H03F2200/297 , H03F2200/301 , H03F2200/309 , H03F2200/387 , H03F2200/391 , H03F2200/402 , H03F2200/451 , H03F2200/552 , H03F2200/75 , H01L2924/00014
摘要： Embodiments of RF amplifiers and packaged RF amplifier devices each include a transistor, an impedance matching circuit, and a video bandwidth circuit. The impedance matching circuit is coupled between the transistor and an RF I/O (e.g., an input or output lead). The video bandwidth circuit is coupled between a connection node of the impedance matching circuit and a ground reference node. The video bandwidth circuit includes a plurality of components, which includes an envelope inductor and an envelope capacitor coupled in series between the connection node and the ground reference node. The video bandwidth circuit further includes a first bypass capacitor coupled in parallel across one or more of the plurality of components of the video bandwidth circuit.

24. 发明授权

US08638165B2 Switched-capacitor DC blocking amplifier 有权
标题翻译：开关电容直流阻塞放大器
公开(公告)号：US08638165B2
公开(公告)日：2014-01-28
申请号：US13271130
申请日：2011-10-11
申请人： Peter J Shah , Shahin Mehdizad Taleie , Gerrit Groenewold , Guoqing Miao , Eunyung Sung
发明人： Peter J Shah , Shahin Mehdizad Taleie , Gerrit Groenewold , Guoqing Miao , Eunyung Sung
IPC分类号： H03F1/02
CPC分类号： H03F3/45475 , H03F3/005 , H03F2200/03 , H03F2200/552 , H03F2203/45512 , H03F2203/45514 , H03F2203/45528 , H03F2203/45594 , H03F2203/45631
摘要： A switched-capacitor DC blocking amplifier is disclosed. In an embodiment, an integrated circuit is provided that includes an amplifier having an amplifier input and an amplifier output, a capacitor connected to the amplifier input and configured to receive an input signal, and a switched capacitor circuit coupled to provide a resistance between the amplifier input and the amplifier output. In one implementation, the switched capacitor circuit is configured with a feed forward circuit to reduce aliasing. In another implementation, the switched capacitor circuit includes a switched impedance circuit to reduce noise.
摘要翻译：公开了一种开关电容器直流阻塞放大器。在一个实施例中，提供一种集成电路，其包括具有放大器输入和放大器输出的放大器，连接到放大器输入并被配置为接收输入信号的电容器，以及耦合以提供放大器之间的电阻的开关电容器电路输入和放大器输出。在一个实现中，开关电容器电路配置有前馈电路以减少混叠。在另一实施方案中，开关电容器电路包括用于降低噪声的开关阻抗电路。

25. 发明申请

US20120306575A1 SWITCHED-CAPACITOR DC BLOCKING AMPLIFIER 有权
标题翻译：开关电容直流阻塞放大器
公开(公告)号：US20120306575A1
公开(公告)日：2012-12-06
申请号：US13271130
申请日：2011-10-11
申请人： Peter J. Shah , Shahin Mehdizad Taleie , Gerrit Groenewold , Guoqing Miao , Eunyung Sung
发明人： Peter J. Shah , Shahin Mehdizad Taleie , Gerrit Groenewold , Guoqing Miao , Eunyung Sung
IPC分类号： H03F3/45 , H03F1/34
CPC分类号： H03F3/45475 , H03F3/005 , H03F2200/03 , H03F2200/552 , H03F2203/45512 , H03F2203/45514 , H03F2203/45528 , H03F2203/45594 , H03F2203/45631
摘要： A switched-capacitor DC blocking amplifier is disclosed. In an embodiment, an integrated circuit is provided that includes an amplifier having an amplifier input and an amplifier output, a capacitor connected to the amplifier input and configured to receive an input signal, and a switched capacitor circuit coupled to provide a resistance between the amplifier input and the amplifier output. In one implementation, the switched capacitor circuit is configured with a feed forward circuit to reduce aliasing. In another implementation, the switched capacitor circuit includes a switched impedance circuit to reduce noise.
摘要翻译：公开了一种开关电容器直流阻塞放大器。在一个实施例中，提供一种集成电路，其包括具有放大器输入和放大器输出的放大器，连接到放大器输入并被配置为接收输入信号的电容器，以及耦合以提供放大器之间的电阻的开关电容器电路输入和放大器输出。在一个实现中，开关电容器电路配置有前馈电路以减少混叠。在另一实施方案中，开关电容器电路包括用于降低噪声的开关阻抗电路。

26. 发明申请

US20110055877A1 AMPLIFIER CIRCUIT 有权
标题翻译：放大器电路
公开(公告)号：US20110055877A1
公开(公告)日：2011-03-03
申请号：US12991190
申请日：2009-05-07
申请人： John Paul Lesso
发明人： John Paul Lesso
IPC分类号： H04N7/18 , H03F99/00 , H04B1/00
CPC分类号： H03F1/305 , H03F1/304 , H03F3/185 , H03F3/68 , H03F2200/03 , H03F2200/331 , H03F2200/375 , H03F2200/552 , H03F2200/78
摘要： There is provided an audio amplifier circuit (200), comprising: an input, for receiving an input signal; an amplifier (205) for receiving a modified input signal and outputting an amplified signal; and a feedback loop (245) comprising digital circuitry for feeding back the amplified signal and combining a feedback signal with the input signal to generate the modified input signal. The feedback loop (245) comprises: a low-pass filter (220) for filtering the amplified signal; a comparator (225) for comparing the filtered signal with a threshold value and outputting a comparison signal; and an integrator (230) for integrating the comparison signal and outputting the feedback signal. According to another embodiment, the feedback loop comprises an integrator and a sigma-delta modulator.
摘要翻译：提供了一种音频放大器电路（200），包括：输入端，用于接收输入信号; 放大器（205），用于接收经修改的输入信号并输出放大信号; 以及包括用于反馈放大信号并将反馈信号与输入信号组合以产生经修改的输入信号的数字电路的反馈回路（245）。反馈回路（245）包括：用于对放大信号进行滤波的低通滤波器（220）; 比较器（225），用于将经滤波的信号与阈值进行比较并输出比较信号; 以及用于积分比较信号并输出反馈信号的积分器（230）。根据另一实施例，反馈回路包括积分器和Σ-Δ调制器。

27. 发明授权

US07378897B2 Input stage for multiplexing and methods for using an input stage for multiplexing 有权
标题翻译：复用的输入级和使用输入级复用的方法
公开(公告)号：US07378897B2
公开(公告)日：2008-05-27
申请号：US11765781
申请日：2007-06-20
申请人： Michael Hopkins
发明人： Michael Hopkins
IPC分类号： H03K17/00
CPC分类号： H03F3/45085 , H03F3/211 , H03F3/45475 , H03F3/72 , H03F2200/552 , H03F2200/78 , H03F2203/45138 , H03F2203/45506 , H03F2203/45592 , H03F2203/45616 , H03K17/005
摘要： Input stages for use in multiplexing, and methods for using the same, are provided herein. An input stage includes an input terminal and an output terminal. A voltage input signal is accepted at the input terminal of the input stage. When the input stage is selected, a substantially unmodified version of the voltage input signal is presented at the output terminal of the input stage, when the input stage is selected. When the input stage is deselected, a rejection voltage signal is produced, where the rejection voltage signal is of substantially equal magnitude and opposite polarity to the corresponding voltage input signal in order to reject the voltage input signal and thereby present a substantially constant voltage at the output terminal of the input stage regardless of variations in the voltage input signal.
摘要翻译：本文提供了用于多路复用的输入级及其使用方法。输入级包括输入端子和输出端子。在输入级的输入端接受电压输入信号。当选择输入级时，当选择输入级时，在输入级的输出端呈现电压输入信号的基本上未修改的版本。当输入级被取消选择时，产生抑制电压信号，其中抑制电压信号与相应的电压输入信号的幅度基本相同，极性相反，以抵消电压输入信号，从而在输入级的输出端子，而与电压输入信号的变化无关。

28. 发明授权

US07250805B2 Methods for multiplexing 有权
标题翻译：多路复用方法
公开(公告)号：US07250805B2
公开(公告)日：2007-07-31
申请号：US11350417
申请日：2006-02-09
申请人： Michael Hopkins
发明人： Michael Hopkins
IPC分类号： H03K17/00
CPC分类号： H03F3/45085 , H03F3/211 , H03F3/45475 , H03F3/72 , H03F2200/552 , H03F2200/78 , H03F2203/45138 , H03F2203/45506 , H03F2203/45592 , H03F2203/45616 , H03K17/005
摘要： A multiplexer circuit includes a plurality of switched differential amplifier circuits, one of which can be selected at a time. Each switched differential amplifier includes a pair of differential inputs and a pair of differential outputs, with each pair of differential inputs accepting a corresponding pair of input signals. Each of the switched differential amplifier circuits is configured to present a current mode version of its input signals at its differential outputs when the switched differential amplifier circuit is selected, and to present substantially zero level output signals at its differential outputs when the switched differential amplifier circuit is deselected. The multiplexer circuit also includes a selector that accepts a select signal and selects one of the plurality of switched differential amplifier circuits based on said select signal. A current mirror is used to combine a pair of multiplexer outputs into a single ended output, a version of which is used for feedback.
摘要翻译：多路复用器电路包括多个开关差分放大器电路，其中一个可以一次选择。每个开关差分放大器包括一对差分输入和一对差分输出，每对差分输入接受一对相应的输入信号。每个开关差分放大器电路被配置为当选择开关差分放大器电路时在其差分输出处呈现其输入信号的电流模式版本，并且当开关差分放大器电路在差分输出时呈现基本上为零电平的输出信号被取消选择。复用器电路还包括接收选择信号并基于所述选择信号选择多个开关差分放大器电路之一的选择器。电流镜用于将一对多路复用器输出组合成单端输出，其版本用于反馈。

29. 发明授权

US09991854B1 Power amplifier output circuit arrangements with mutual coupling between inductors 有权
公开(公告)号：US09991854B1
公开(公告)日：2018-06-05
申请号：US15449297
申请日：2017-03-03
申请人： NXP USA, Inc.
发明人： Ning Zhu , Damon G. Holmes , Ricardo Uscola , Jeffrey Kevin Jones
IPC分类号： H03F3/191 , H03F1/56 , H03F3/195 , H03F3/213 , H01L23/66
CPC分类号： H03F1/565 , H01L23/66 , H01L2223/6611 , H01L2223/6655 , H03F3/195 , H03F3/213 , H03F2200/222 , H03F2200/387 , H03F2200/451 , H03F2200/552
摘要： Embodiments of an RF amplifier include a transistor with a control terminal and first and second current carrying terminals, and a shunt circuit coupled between the first current carrying terminal and a ground reference node. The shunt circuit includes a first shunt inductive element, a second shunt inductance, and a shunt capacitor coupled in series. Instead of a separate inductive element, the second shunt inductance may be achieved via magnetic coupling of the first shunt inductive element and an envelope inductive element of a video bandwidth circuit that is coupled between an RF cold point node (between the first and second shunt inductances) and the ground. Alternatively, an envelope inductance in the video bandwidth circuit may be achieved via magnetic coupling of first and second shunt inductive elements. A better RF cold point may be achieved without physically incorporating separate inductive elements, allowing for reduction in cost and size.

30. 发明授权

US09954495B1 PVT invariant peaking stage for continuous time linear equalizer 有权
公开(公告)号：US09954495B1
公开(公告)日：2018-04-24
申请号：US15332830
申请日：2016-10-24
申请人： SYNAPTICS INCORPORATED
发明人： Yonggang Chen , Sagar Kumar
IPC分类号： H03F3/45 , H03F1/30 , H03F3/195 , H04L25/03
CPC分类号： H04L25/03057 , H03F1/301 , H03F1/42 , H03F3/193 , H03F3/45197 , H03F2200/297 , H03F2200/447 , H03F2200/552
摘要： Frequency characteristics of a peaking stage can vary depending on variations in the process used to fabricate the peaking stage. For example, depending on the batch of wafers and where on a wafer the peaking stage is formed, the capacitors and resistors may have different values, thereby changing the frequency characteristics of the peaking stage. The embodiments herein describe a peaking stage that is invariant of the process variation. That is, one or more of the frequency characteristics of the peaking stages do not vary as the values of a capacitor or resistor change. As such, peaking stages formed in different process corners on the wafer have the same frequency characteristics, and thus, function in a similar manner.

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