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公开(公告)号：US07843038B2
公开(公告)日：2010-11-30
申请号：US11326823
申请日：2006-01-06
申请人： Dorin Seremeta
发明人： Dorin Seremeta
IPC分类号： H01L29/66
CPC分类号： H03F3/45103 , H03F1/22 , H03F1/3211 , H03F1/34 , H03F3/211 , H03F3/3432 , H03F3/4508 , H03F3/45197 , H03F2203/45024 , H03F2203/45031 , H03F2203/45056 , H03F2203/45134 , H03F2203/45221 , H03F2203/45244 , H03F2203/45288 , H03F2203/45311 , H03F2203/45352 , H03F2203/45731 , H03G1/0088
摘要： Variable gain amplifiers offering high frequency response with improved linearity and reduced power dissipation are provided. An amplifier is disclosed that is constructed from a one-stage topology with multiple signal paths and compensation networks for improved linearity and stable operation. In this amplifier, improved performance is obtained by replacing single transistor components with enhanced active devices which incorporate local negative feedback. One embodiment of the invention is a transconductance enhancement circuit that improves transconductance and input impedance relative to the prior art. A further development is an enhanced active cascode circuit that provides improved linearity. A high frequency bipolar transistor switch is also disclosed that incorporates lateral PNP transistors as high frequency switches with improved OFF-state to ON-state impedance ratio to realize a variable gain function. These circuits are combined in an amplifier circuit that provides variable gain and high frequency performance, with improved linearity, gain, and input impedance.
摘要翻译： 提供了具有提高线性度和降低功耗的高频响应的可变增益放大器。 公开了一种放大器，其由具有多个信号路径和补偿网络的单级拓扑构成，用于改善线性度和稳定的操作。 在该放大器中，通过采用并入局部负反馈的增强型有源器件替换单个晶体管元件，可以获得改进的性能。 本发明的一个实施例是相对于现有技术改进跨导和输入阻抗的跨导增强电路。 进一步的发展是增强的有源共源共栅电路，其提供改善的线性度。 还公开了一种高频双极晶体管开关，其将横向PNP晶体管作为具有改进的截止状态到导通状态阻抗比的高频开关，以实现可变增益功能。 这些电路组合在提供可变增益和高频性能的放大器电路中，具有改进的线性度，增益和输入阻抗。
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公开(公告)号：US07449953B2
公开(公告)日：2008-11-11
申请号：US11979327
申请日：2007-11-01
申请人： Travis Staples , Jacob Baker
发明人： Travis Staples , Jacob Baker
IPC分类号： H03F3/45
CPC分类号： H03F3/45475 , H03F3/45183 , H03F2203/45166 , H03F2203/45221 , H03F2203/45528 , H03F2203/45624
摘要： An input buffer includes a first stage for receiving an input signal and having a first pair of complementary output signals, the first stage including an input circuit for receiving the input signal, an output circuit for generating the first pair of complementary output signals based on the input signal, a resistance feedback circuit connected to the first pair of complementary output signals and generating a feedback signal, and a common mode circuit for balancing the complementary outputs based on the feedback signal.
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公开(公告)号：US07071784B2
公开(公告)日：2006-07-04
申请号：US10307200
申请日：2002-11-29
申请人： Dorin Seremeta
发明人： Dorin Seremeta
IPC分类号： H03F3/04
CPC分类号： H03F3/45103 , H03F1/22 , H03F1/3211 , H03F1/34 , H03F3/211 , H03F3/3432 , H03F3/4508 , H03F3/45197 , H03F2203/45024 , H03F2203/45031 , H03F2203/45056 , H03F2203/45134 , H03F2203/45221 , H03F2203/45244 , H03F2203/45288 , H03F2203/45311 , H03F2203/45352 , H03F2203/45731 , H03G1/0088
摘要： Variable gain amplifiers offering high frequency response with improved linearity and reduced power dissipation are provided. An amplifier is disclosed that is constructed from a one-stage topology with multiple signal paths and compensation networks for improved linearity and stable operation. In this amplifier, improved performance is obtained by replacing single transistor components with enhanced active devices which incorporate local negative feedback. One embodiment of the invention is a transconductance enhancement circuit that improves transconductance and input impedance relative to the prior art. A further development is an enhanced active cascode circuit that provides improved linearity. A high frequency bipolar transistor switch is also disclosed that incorporates lateral PNP transistors as high frequency switches with improved OFF-state to ON-state impedance ratio to realize a variable gain function. These circuits are combined in an amplifier circuit that provides variable gain and high frequency performance, with improved linearity, gain, and input impedance.
摘要翻译： 提供了具有提高线性度和降低功耗的高频响应的可变增益放大器。 公开了一种放大器，其由具有多个信号路径和补偿网络的单级拓扑构成，用于改善线性度和稳定的操作。 在该放大器中，通过采用并入局部负反馈的增强型有源器件替换单个晶体管元件，可以获得改进的性能。 本发明的一个实施例是相对于现有技术改进跨导和输入阻抗的跨导增强电路。 进一步的发展是增强的有源共源共栅电路，其提供改善的线性度。 还公开了一种高频双极晶体管开关，其将横向PNP晶体管作为具有改进的截止状态到导通状态阻抗比的高频开关，以实现可变增益功能。 这些电路组合在提供可变增益和高频性能的放大器电路中，具有改进的线性度，增益和输入阻抗。
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公开(公告)号：US5113147A
公开(公告)日：1992-05-12
申请号：US588981
申请日：1990-09-26
申请人： Hans W. Klein
发明人： Hans W. Klein
CPC分类号： H03F3/45179 , H03F1/3211 , H03F3/45197 , H03F2203/30087 , H03F2203/30105 , H03F2203/45008 , H03F2203/45191 , H03F2203/45221 , H03F2203/45251 , H03F2203/45318 , H03F2203/45471 , H03F2203/45571 , H03F2203/45694 , H03F2203/45711
摘要： A wide-band differential amplifier includes four MOS transistors connected in a source-follower configuration for gm-cancellation. Accurate gain and low distortion of the amplified signals results over the frequency band.
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公开(公告)号：US4599574A
公开(公告)日：1986-07-08
申请号：US691709
申请日：1985-01-14
申请人： William R. Chambers
发明人： William R. Chambers
CPC分类号： H03F3/45071 , H03G3/02 , H03F2200/261 , H03F2203/45021 , H03F2203/45024 , H03F2203/45048 , H03F2203/45052 , H03F2203/45178 , H03F2203/45188 , H03F2203/45221 , H03F2203/45356 , H03F2203/45466 , H03F2203/45471
摘要： A high accuracy selectable gain instrumentation amplifier system which avoids amplifying signal distortions produced by gain selection switches includes a high gain amplifier having an input coupled to receive a system input signal and a feedback signal and an output generating an output signal proportional to the difference therebetween, a feedback network providing a plurality of gain selection feedback paths to the amplifier input, a first switching network coupling the amplifier output to a selected feedback path and a second switching network coupling the selected feedback path to the system output. The amplifier system may be implemented in either a differential or single ended ground referenced configuration.
摘要翻译： 避免放大由增益选择开关产生的信号失真的高精度可选择增益仪表放大器系统包括具有耦合以接收系统输入信号和反馈信号的输入的高增益放大器和产生与它们之间的差异成比例的输出信号的输出， 向放大器输入提供多个增益选择反馈路径的反馈网络，将放大器输出耦合到所选择的反馈路径的第一交换网络和将所选择的反馈路径耦合到系统输出的第二交换网络。 放大器系统可以以差分或单端接地参考配置来实现。
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公开(公告)号：US09847763B2
公开(公告)日：2017-12-19
申请号：US15166066
申请日：2016-05-26
申请人： MediaTek Inc.
发明人： Wen-Hua Chang
CPC分类号： H03F3/45686 , H03F1/083 , H03F1/30 , H03F3/005 , H03F3/45 , H03F3/45273 , H03F2200/151 , H03F2200/153 , H03F2200/159 , H03F2200/42 , H03F2200/75 , H03F2203/45012 , H03F2203/45061 , H03F2203/45156 , H03F2203/45221 , H03F2203/45244 , H03F2203/45514 , H03F2203/45546 , H03F2203/45551 , H03F2203/45616 , H03H7/004
摘要： A switched-capacitor circuit comprising a differential operational amplifier and a feedback circuit is described. In some embodiments, the feedback circuit may be configured to provide a reference voltage that is insensitive to temperature and/or process variations. In some embodiments, the feedback circuit may be configured to mitigate the time delay associated with one or more capacitors of the switched-capacitor circuit. The switched-capacitor circuit may be controlled by a pair of control signals. During a first phase, one or more capacitors may be charged, or discharged, through an input signal. During a second phase, the electric charge of the one or more capacitors may be retained.
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公开(公告)号：US09654061B2
公开(公告)日：2017-05-16
申请号：US14698974
申请日：2015-04-29
发明人： Kadaba Lakshmikumar , Craig Appel
CPC分类号： H03F3/08 , H03F1/0205 , H03F1/086 , H03F3/45076 , H03F3/45183 , H03F3/45659 , H03F2200/135 , H03F2200/75 , H03F2203/45026 , H03F2203/45082 , H03F2203/45088 , H03F2203/45116 , H03F2203/45208 , H03F2203/45221 , H03F2203/45336 , H03F2203/45402 , H03F2203/45418 , H03F2203/45434 , H03F2203/45436 , H03F2203/45481 , H03F2203/45594 , H03F2203/45604 , H03F2203/45642 , H03F2203/45648 , H03F2203/45664
摘要： Embodiments generally relate to a conversion arrangement, a driver arrangement, and a method of producing a complementary complementary metal-oxide-semiconductor (CMOS) output signal for driving a modulator device. The conversion arrangement includes a differential amplifier configured to produce a first amplified signal based on the differential input signal, and at least two transimpedance amplifiers (TIAs) coupled with respective outputs of the differential amplifier and configured to produce a second amplified signal based on the first amplified signal. Respective bias voltages for the TIAs are based on the first amplified signal. The conversion arrangement further includes a common-mode feedback arrangement coupled with outputs of the TIAs and configured to control the first amplified signal based on the second amplified signal, thereby controlling the bias voltages, wherein the complementary CMOS output signal is based on the second amplified signal.
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8.发明申请Complementary Low Noise Transductor with Active Single Ended to Differential Signal Conversion 审中-公开具有主动单端到差分信号转换的互补低噪声转换器公开(公告)号：US20140218114A1
公开(公告)日：2014-08-07
申请号：US14249143
申请日：2014-04-09
发明人： Paolo Rossi
CPC分类号： H03F3/45071 , H03F1/223 , H03F3/193 , H03F3/195 , H03F3/45179 , H03F3/68 , H03F2200/243 , H03F2200/294 , H03F2200/451 , H03F2200/492 , H03F2200/541 , H03F2203/45221 , H03F2203/45681
摘要： A method includes, in at least one aspect, receiving, at both an input node of a first input stage and in input node of a second input stage, a single-ended voltage signal; providing, by at least one of the first input stage or the second input stage, inductive degeneration to the single-ended voltage signal; converting an output from the first input stage into a first single-ended current signal; converting an output from the second input stage into a second single-ended current signal; and outputting, by an output stage, a differential output including the first single-ended current signal and the second single-ended current signal.
摘要翻译： 在至少一个方面中，一种方法包括在第一输入级的输入节点和第二输入级的输入节点的两端接收单端电压信号; 通过所述第一输入级或所述第二输入级中的至少一个向所述单端电压信号提供电感性退化; 将来自第一输入级的输出转换为第一单端电流信号; 将来自第二输入级的输出转换为第二单端电流信号; 以及通过输出级输出包括第一单端电流信号和第二单端电流信号的差分输出。
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公开(公告)号：US20080061880A1
公开(公告)日：2008-03-13
申请号：US11979327
申请日：2007-11-01
申请人： Travis Staples , Jacob Baker
发明人： Travis Staples , Jacob Baker
IPC分类号： H03F3/45
CPC分类号： H03F3/45475 , H03F3/45183 , H03F2203/45166 , H03F2203/45221 , H03F2203/45528 , H03F2203/45624
摘要： An input buffer includes a first stage for receiving an input signal and having a first pair of complementary output signals, the first stage including an input circuit for receiving the input signal, an output circuit for generating the first pair of complementary output signals based on the input signal, a resistance feedback circuit connected to the first pair of complementary output signals and generating a feedback signal, and a common mode circuit for balancing the complementary outputs based on the feedback signal.
摘要翻译： 输入缓冲器包括用于接收输入信号并具有第一对互补输出信号的第一级，第一级包括用于接收输入信号的输入电路，用于基于该输入信号产生第一对互补输出信号的输出电路 输入信号，连接到第一对互补输出信号并产生反馈信号的电阻反馈电路，以及用于基于反馈信号平衡互补输出的共模电路。
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公开(公告)号：US5307024A
公开(公告)日：1994-04-26
申请号：US920076
申请日：1992-07-27
申请人： Arthur J. Metz , James S. Lamb
发明人： Arthur J. Metz , James S. Lamb
IPC分类号： B01J31/24 , C07B61/00 , C07C45/50 , C07C47/02 , C07F9/6568 , C07F15/00 , H03F1/32 , H03F3/45
CPC分类号： C07C45/50 , B01J31/248 , C07F15/008 , C07F9/65683 , H03F1/3211 , H03F3/45098 , H03F3/45197 , B01J2231/321 , B01J2531/822 , H03F2203/45176 , H03F2203/45221 , H03F2203/45454 , H03F2203/45458 , H03F2203/45496 , H03F2203/45648 , H03F2203/45668
摘要： An all NPN transistor level-shifting differential amplifier has first and second identical amplifier halves, in which each amplifier half includes a passive voltage-shifting network coupled between a load and a current source. A main amplifier has a single-ended voltage input and an output coupled to the first node of the voltage shifting network. An output amplifier has a single-ended current output and an input coupled to the second node of the voltage shifting network. The main amplifier and output amplifiers are coupled together such that a portion of the bias and signal currents flowing through the output amplifier is reused and flows through the main amplifier, reducing bias current and power requirements. The first and second amplifier halves are coupled together with a gain-setting emitter resistor. In addition to reducing the power requirements of the amplifier, the feedback configuration of the level-shifting amplifier also increases linearity over prior art level-shifting amplifiers.
摘要翻译： 所有NPN晶体管电平移位差分放大器具有第一和第二相同的放大器半部，其中每个放大器一半包括耦合在负载和电流源之间的无源电压移动网络。 主放大器具有单端电压输入和耦合到电压转换网络的第一节点的输出。 输出放大器具有单端电流输出和耦合到电压转换网络的第二节点的输入。 主放大器和输出放大器耦合在一起，使得流过输出放大器的偏置和信号电流的一部分被重新使用并流过主放大器，减少了偏置电流和功率需求。 第一和第二放大器一半与增益设置发射极电阻耦合在一起。 除了降低放大器的功率需求之外，电平移位放大器的反馈配置还提高了现有技术的电平移位放大器的线性度。
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