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61. 发明申请

US20150102858A1 DISTRIBUTED POLE-ZERO COMPENSATION FOR AN AMPLIFIER 有权
标题翻译：用于放大器的分布式零位补偿
公开(公告)号：US20150102858A1
公开(公告)日：2015-04-16
申请号：US14508755
申请日：2014-10-07
申请人： Texas Instruments Incorporated
发明人： Srinivas K. Pulijala , Steven G. Brantley
IPC分类号： H03F1/02 , H03F3/21
CPC分类号： H03F1/02 , H03F1/14 , H03F3/20 , H03F2200/135 , H03F2200/153 , H03F2200/171 , H03F2200/297 , H03F2200/408
摘要： An amplifier includes an amplifier input and an amplifier output. A compensation network is coupled to the amplifier output. The compensation network includes at least one RC network tuned to a frequency in which the amplifier operates. The compensation network provides at least one zero to compensate for at least one pole introduced by a load coupled to the amplifier output.
摘要翻译：放大器包括放大器输入和放大器输出。补偿网络耦合到放大器输出。补偿网络包括至少一个调谐到放大器工作频率的RC网络。补偿网络提供至少一个零以补偿由耦合到放大器输出的负载引入的至少一个极点。

62. 发明申请

US20140167850A1 CURRENT FEEDBACK OUTPUT CIRCUIT 有权
标题翻译：电流反馈输出电路
公开(公告)号：US20140167850A1
公开(公告)日：2014-06-19
申请号：US14013967
申请日：2013-08-29
申请人： Kabushiki Kaisha Toshiba
发明人： Akira Yamauchi , Hiroyuki Tsurumi
IPC分类号： H03F1/34
CPC分类号： H03F3/211 , H03F1/342 , H03F3/3028 , H03F3/45475 , H03F2200/03 , H03F2200/135 , H03F2200/91 , H03F2203/21181 , H03F2203/45138 , H03F2203/45511
摘要： The current feedback output circuit includes first and second transistors. The current feedback output circuit includes a current amplifier that has a non-inverting input terminal, an inverting input terminal, a first output terminal and a second output terminal, an input impedance of the non-inverting input terminal being higher than an input impedance of the inverting input terminal, and flows a current obtained by amplifying the difference between a current of an input signal to the non-inverting input terminal and a current input to the inverting input terminal between the first output terminal and the second output terminal. The current feedback output circuit includes first to sixth current mirror circuits. The current feedback output circuit includes a current feedback circuit that supplies a current responsive to a voltage at the signal output terminal to the inverting input terminal.
摘要翻译：电流反馈输出电路包括第一和第二晶体管。电流反馈输出电路包括具有非反相输入端子，反相输入端子，第一输出端子和第二输出端子的电流放大器，非反相输入端子的输入阻抗高于反相输入端子，并且流过通过将输入信号的电流与非反相输入端子之间的差放大到在第一输出端子和第二输出端子之间输入到反相输入端子的电流而获得的电流。电流反馈输出电路包括第一至第六电流镜电路。电流反馈输出电路包括电流反馈电路，其将响应于信号输出端子处的电压的电流提供给反相输入端子。

63. 发明申请

US20130235918A1 DYNAMIC GAIN ASSIGNMENT IN ANALOG BASEBBAND CIRCUITS 有权
公开(公告)号：US20130235918A1
公开(公告)日：2013-09-12
申请号：US13868671
申请日：2013-04-23
申请人： SITUNE CORPORATION
发明人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi
IPC分类号： H04L25/08 , H03K5/00
CPC分类号： H04B1/16 , H03F3/19 , H03F2200/135 , H03F2200/144 , H03F2200/451 , H03G3/3036 , H03G3/3068 , H03H11/1213 , H03H11/1291 , H03K5/00 , H04B1/10 , H04L25/08
摘要： A system and method is provided for filtering and amplifying a signal where amplification can be distributed between stages of a filter and gain can be assigned throughout the filter to optimize system performance. Such a system can be implemented in the baseband section of RF receivers. VGAs can be implemented between filter stages, such as biquads, or VGAs can be incorporated in filter stages. Substantially linear VGAs comprising a parallel resistor array can be incorporated in the circuitry of the filter stages to reduce distortion. Gain can be assigned dynamically in the amplification stages to improve noise and/or linearity performance. For example, gain assignments can be implemented so that high power undesired signal components are filtered out before amplification to prevent component saturation, and low power signals are amplified before they are filtered to improve noise performance.

64. 发明授权

US08433274B2 Dynamic gain assignment in analog baseband circuits 有权
公开(公告)号：US08433274B2
公开(公告)日：2013-04-30
申请号：US12728148
申请日：2010-03-19
申请人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi
发明人： Saeid Mehrmanesh , Vahid Mesgarpour Toosi
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H04B1/16 , H03F3/19 , H03F2200/135 , H03F2200/144 , H03F2200/451 , H03G3/3036 , H03G3/3068 , H03H11/1213 , H03H11/1291 , H03K5/00 , H04B1/10 , H04L25/08
摘要： A system and method is provided for filtering and amplifying a signal where amplification can be distributed between stages of a filter and gain can be assigned throughout the filter to optimize system performance. Such a system can be implemented in the baseband section of RF receivers. VGAs can be implemented between filter stages, such as biquads, or VGAs can be incorporated in filter stages. Substantially linear VGAs comprising a parallel resistor array can be incorporated in the circuitry of the filter stages to reduce distortion. Gain can be assigned dynamically in the amplification stages to improve noise and/or linearity performance. For example, gain assignments can be implemented so that high power undesired signal components are filtered out before amplification to prevent component saturation, and low power signals are amplified before they are filtered to improve noise performance.

65. 发明授权

US08049557B2 Self oscillating class D amplification device 有权
公开(公告)号：US08049557B2
公开(公告)日：2011-11-01
申请号：US12656815
申请日：2010-02-17
申请人： Bruno Johan Georges Putzeys
发明人： Bruno Johan Georges Putzeys
IPC分类号： H03F3/38 , H03F1/36
CPC分类号： H03F3/217 , H03F2200/123 , H03F2200/129 , H03F2200/135 , H03F2200/264 , H03F2200/351 , H03F2200/453 , H03F2200/66 , H03F2200/78
摘要： An amplification device, comprising a device input receiving a device input signal, an amplifier unit comprising a zero crossing detector unit, an output filter and a lead-lag compensation network. The zero crossing detector unit compares the device input signal with a reference potential and switches a pulse width modulated detector output signal between first and second voltage levels dependent on the comparison. The amplifier unit provides an actual device output signal, e.g., an amplified representation of the device input signal. The amplification device further comprises a device output providing the actual device output signal, a control loop bridging the amplifier unit and comprising a forward filter, e.g., an integrating filter, for increasing loop gain improving the signal-to-noise ratio of the actual device output signal, and a deviation detection unit detecting over modulation of the amplifier unit, so that the amplification device disables forward filter functioning upon over modulation.

66. 发明申请

US20110074502A1 MULTIPLE-INPUT AND MULTIPLE-OUTPUT AMPLIFIER HAVING PSEUDO-DIFFERENTIAL INPUTS 有权
标题翻译：具有PSEUDO差分输入的多输入和多输出放大器
公开(公告)号：US20110074502A1
公开(公告)日：2011-03-31
申请号：US12955381
申请日：2010-11-29
申请人： Frédéric BROYDE , Evelyne CLAVELIER
发明人： Frédéric BROYDE , Evelyne CLAVELIER
IPC分类号： H03F1/36
CPC分类号： H03F3/68 , H03F1/223 , H03F3/211 , H03F3/245 , H03F3/45475 , H03F2200/135
摘要： The invention relates to an amplifier capable of delivering a plurality of output signals, these output signals being controlled by a plurality of input signals.A multiple-input and multiple-output amplifier of the invention comprises a common input terminal, 4 signal input terminals, 4 signal output terminals, a common terminal amplifier, 4 active sub-circuits and a feedback network. Each active sub-circuit has a sub-circuit input terminal connected to one of the signal input terminals, a sub-circuit output terminal connected to one of the signal output terminals and a sub-circuit common terminal. The feedback network has four C terminals and one R terminal. Each of said C terminals of the feedback network is coupled to the sub-circuit common terminal of one of said active sub-circuits. The output terminal of the common terminal amplifier is coupled to said R terminal of the feedback network.
摘要翻译：本发明涉及一种能够传送多个输出信号的放大器，这些输出信号由多个输入信号控制。本发明的多输入多输出放大器包括一个公共输入端，4个信号输入端，4个信号输出端，一个公共端放大器，4个有源子电路和一个反馈网络。每个有源子电路具有连接到信号输入端子之一的子电路输入端子，连接到信号输出端子之一的子电路输出端子和子电路公共端子。反馈网络有四个C终端和一个R终端。反馈网络的所述C个终端中的每一个耦合到所述有源子电路之一的子电路公共端。公共端子放大器的输出端子耦合到反馈网络的所述R端子。

67. 发明申请

US20100214024A1 LOW DISSIPATION AMPLIFIER 有权
标题翻译：低功耗放大器
公开(公告)号：US20100214024A1
公开(公告)日：2010-08-26
申请号：US12713015
申请日：2010-02-25
申请人： Owen Jones , Lawrence R. Fincham
发明人： Owen Jones , Lawrence R. Fincham
IPC分类号： H03F3/06
CPC分类号： 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
摘要： 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.
摘要翻译：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。

68. 发明申请

US20100039180A1 AMPLIFYING CIRCUIT 有权
标题翻译：放大电路
公开(公告)号：US20100039180A1
公开(公告)日：2010-02-18
申请号：US12539644
申请日：2009-08-12
申请人： Serge Pontarollo , Serge Ramet
发明人： Serge Pontarollo , Serge Ramet
IPC分类号： H03F3/16
CPC分类号： H03F3/3027 , H03F1/0261 , H03F1/308 , H03F1/3205 , H03F1/3217 , H03F1/342 , H03F2200/135 , H03F2200/453 , H03F2200/456 , H03F2200/513
摘要： 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.
摘要翻译：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。

69. 发明申请

US20090102552A1 SEMICONDUCTOR INTEGRATED CIRCUIT WITH VARIABLE GAIN AMPLIFIER 有权
标题翻译：具有可变增益放大器的半导体集成电路
公开(公告)号：US20090102552A1
公开(公告)日：2009-04-23
申请号：US12252554
申请日：2008-10-16
申请人： Nobuhiro SHIRAMIZU , Toru Masuda
发明人： Nobuhiro SHIRAMIZU , Toru Masuda
IPC分类号： H03F3/68
CPC分类号： H03F3/50 , H03F1/342 , H03F3/195 , H03F2200/135 , H03F2200/18 , H03F2200/294 , H03F2200/451 , H03F2203/5036 , H03G1/0023
摘要： The variable gain amplifier includes a bias circuit (BC) 1, a matching circuit (MC) 2, a variable gain resistive feedback amplifier (FA) 3 and an output follower (EA) 4. The resistance values of the load resistance Rc and feedback resistance Rf are changed in cooperation. In a case of making the load resistance Rc a high resistance to set the low noise amplifier to a high gain, the feedback resistance Rf is also made a high resistance, the feedback time constant τfb(c1)≈2π·RfCbe/(1+gmRc) of the closed loop of the resistive negative feedback amplifier 3 becomes substantially constant, and then the amplifier has a gain small in frequency dependency over a wide bandwidth. In a case of making the load resistance Rc a low resistance to set the low noise amplifier to a low gain, the feedback resistance Rf is also made a low resistance. The feedback resistance Rf with the low resistance increases the negative feedback quantity, and thus the amplifier is set to a low gain. Also, the load resistance Rc is made a low resistance, and the feedback time constant τfb(c1) becomes substantially constant. The gain is not lowered further in a high frequency region.
摘要翻译：可变增益放大器包括偏置电路（BC）1，匹配电路（MC）2，可变增益电阻反馈放大器（FA）3和输出跟随器（EA）4.负载电阻Rc和反馈的电阻值电阻Rf随之改变。在使负载电阻Rc为高电平的情况下，将低噪声放大器设定为高增益的情况下，反馈电阻Rf也变为高电阻，反馈时间常数τfb（c1）≈2pi.RfCbe/（1+ 电阻性负反馈放大器3的闭环的gmRc变得基本恒定，然后放大器在宽带宽上具有小的频率依赖性的增益。在将负载电阻Rc设置为低电阻以将低噪声放大器设置为低增益的情况下，反馈电阻Rf也被制成低电阻。具有低电阻的反馈电阻Rf增加负反馈量，因此放大器被设置为低增益。此外，使负载电阻Rc为低电阻，反馈时间常数τfb（c1）变得基本恒定。增益在高频区域不会进一步降低。

70. 发明申请

US20090102551A1 OPERATIONAL AMPLIFIER WITH IMPROVED CURRENT MONITORING AND SCALABLE OUTPUT 有权
标题翻译：具有改进的电流监测和可扩展输出的操作放大器
公开(公告)号：US20090102551A1
公开(公告)日：2009-04-23
申请号：US12173703
申请日：2008-07-15
申请人： Abhishek Bandyopadhyay , Khiem Nguyen
发明人： Abhishek Bandyopadhyay , Khiem Nguyen
IPC分类号： H03F1/14 , H03F3/45
CPC分类号： H03F3/45475 , H03F3/3022 , H03F3/45183 , H03F2200/135 , H03F2200/513 , H03F2203/30033 , H03F2203/45726
摘要： A low-power, low-voltage feedback class AB operational amplifier is disclosed. The minimum supply voltage is one gate-source voltage and two saturation voltages. Currents on the output p-type and n-type transistors are monitored as part of the feedback loop control. Accurate monitoring is achieved by connecting current monitors directly to the corresponding voltage rail. Additional output stages may be selectively connected to the primary output stage to dynamically adjust to changes source conditions. Thus by connecting the appropriate number and type of additional output stages, continuous time adaptive power supply compensation is achieved. Both single ended and differential topologies are described.
摘要翻译：公开了一种低功率，低电压反馈级AB运算放大器。最小电源电压为一个栅源电压和两个饱和电压。作为反馈回路控制的一部分，监视输出p型和n型晶体管上的电流。通过将电流监视器直接连接到相应的电压轨来实现精确的监控。另外的输出级可以选择性地连接到主输出级，以动态调整以改变源条件。因此，通过连接适当数量和类型的附加输出级，实现连续时间自适应电源补偿。描述了单端和差分拓扑。

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