公开(公告)号：US20190097845A1

公开(公告)日：2019-03-28

申请号：US15715205

申请日：2017-09-26

申请人： International Business Machines Corporation

发明人： Pier Andrea Francese ,  Ilter Oezkaya ,  Alessandro Cevrero

IPC分类号： H04L25/03 ,  H03F3/45 ,  H03F3/193

CPC分类号： H04L25/03038 ,  H03F3/193 ,  H03F3/34 ,  H03F3/345 ,  H03F3/45179 ,  H03F3/45224 ,  H03F3/45246 ,  H03F2203/45022 ,  H03F2203/45028 ,  H03F2203/45394 ,  H04B1/1081 ,  H04L25/03159 ,  H04L25/03885 ,  H04L2025/03541

摘要： The present invention relates to a continuous time linear equalizer comprising a first signal path comprising a high pass filter and a first controllable transconductance unit and a second signal path comprising a second controllable transconductance unit. The continuous time linear equalizer comprises a summation node configured to receive complementary current summation signals of the first transconductance unit and the second transconductance unit. The high pass filter comprises a first port configured to receive an input signal, a second port coupled to a control port of the first transconductance unit and a third port coupled to the summation node. The invention is notably also directed to a corresponding method and a corresponding design structure.

公开(公告)号：US20180241365A1

公开(公告)日：2018-08-23

申请号：US15897109

申请日：2018-02-14

申请人： Chengdu Monolithic Power Systems Co., Ltd.

发明人： Zhijiang Yang

IPC分类号： H03F9/04 ,  H03F15/00

CPC分类号： H03F9/04 ,  G01R33/00 ,  G01R33/0023 ,  G01R33/072 ,  H03F3/345 ,  H03F3/45183 ,  H03F15/00 ,  H03F2200/261

摘要： A signal amplifying system having an oscillator and an amplifying circuit. The oscillator has a first resistor with a first resistance R1 and a first capacitor with a first capacitance C1, and generates an oscillating signal having a frequency f which equals to k1/(R1*C1), k1 is a first proportional parameter. The amplifying circuit has an input terminal to receive an input signal and amplifies the input signal under the control of the oscillating signal. The amplifying circuit has a second resistor with a second resistance R2 and a second capacitor with a second capacitance C2. The amplifying circuit has a −3 dB bandwidth W−3 dB which equals to k2/(R2*C2), k2 is a second proportional parameter. In this signal amplifying system, the product of the first resistance R1 and the first capacitance C1 is proportional to the product of the second resistance R2 and the second capacitance C2.

公开(公告)号：US20170338773A1

公开(公告)日：2017-11-23

申请号：US15596149

申请日：2017-05-16

申请人： SKYWORKS SOLUTIONS, INC.

发明人： Florinel G. BALTEANU ,  Paul T. DICARLO ,  Boshi JIN ,  Serge Francois DROGI

IPC分类号： H03F1/02 ,  H03F3/345 ,  H03F1/56 ,  H03F3/19

CPC分类号： H03F1/0277 ,  H03F1/0266 ,  H03F1/0272 ,  H03F1/223 ,  H03F1/56 ,  H03F3/19 ,  H03F3/245 ,  H03F3/345 ,  H03F2200/102 ,  H03F2200/222 ,  H03F2200/387 ,  H03F2200/451 ,  H03F2203/7206

摘要： Disclosed herein are power amplification systems that are dynamically biased based on a signal indicative of an envelope of the signal being amplified. The power amplification systems include a power amplifier configured to amplify an input radio-frequency (RF) signal to generate an output RF signal when biased by a biasing signal. The power amplification systems also include a bias component configured to generate the biasing signal based on an envelope signal indicative of an envelope of the input RF signal. The biasing signal can improve or enhance the linearity of the power amplification systems.

公开(公告)号：US09438189B2

公开(公告)日：2016-09-06

申请号：US13793933

申请日：2013-03-11

申请人： QUALCOMM Incorporated

发明人： Vijayakumar Dhanasekaran

IPC分类号： H03F1/22 ,  H03F3/45 ,  H03F1/02 ,  H03F3/21 ,  H03F3/30 ,  H03F3/345

CPC分类号： H03F3/45179 ,  H03F1/0261 ,  H03F1/22 ,  H03F1/223 ,  H03F3/211 ,  H03F3/3022 ,  H03F3/345 ,  H03F2200/405 ,  H03F2200/408 ,  H03F2200/453 ,  H03F2200/456 ,  H03F2200/61

摘要： A low voltage multi-stage amplifier is described. The low voltage multi-stage amplifier includes one or more prior stages. The low voltage multi-stage amplifier also includes a supply stage. The low voltage multi-stage amplifier further includes an output stage that operates with a supply voltage as low as a sum of a threshold voltage of a first transistor in the output stage and a saturation voltage of a second transistor of the supply stage. The supply stage supplies the output stage.

摘要翻译： 描述了一种低压多级放大器。 低压多级放大器包括一个或多个前级。 低压多级放大器还包括供电级。 低电压多级放大器还包括输出级，其工作电压低至输出级中的第一晶体管的阈值电压与供电级的第二晶体管的饱和电压之和的电压。 供应阶段提供输出级。

公开(公告)号：US09438171B2

公开(公告)日：2016-09-06

申请号：US14603686

申请日：2015-01-23

申请人： SNAPTRACK, INC.

发明人： Russell Fagg

IPC分类号： H03F1/02 ,  H03F3/45 ,  H03F3/193 ,  H03F3/24 ,  H03F3/345

CPC分类号： H03F1/0222 ,  H03F3/193 ,  H03F3/24 ,  H03F3/345 ,  H03F2200/456 ,  H03F2200/91

摘要： A circuit having a first transistor being a common gate connected transistor and a second transistor, the second transistor being M times the size of the first transistor, the first and second transistors having commonly connected gates and commonly connected drains, wherein an apparatus is provided to regulate the source voltage of the second transistor to track the source voltage of the first transistor, wherein the current gain of the circuit is M+1.

摘要翻译： 一种具有第一晶体管的公共栅极连接晶体管和第二晶体管的电路，所述第二晶体管是所述第一晶体管的尺寸的M倍，所述第一和第二晶体管具有共同连接的栅极和共同连接的漏极，其中， 调节第二晶体管的源极电压以跟踪第一晶体管的源极电压，其中电路的电流增益为M + 1。

公开(公告)号：US20160087601A1

公开(公告)日：2016-03-24

申请号：US14863399

申请日：2015-09-23

申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

发明人： HUSSAIN ABDULLAH ALZAHER ,  MOHAMMAD KHALAF ALGHAMDI

IPC分类号： H03H11/04

CPC分类号： H03H11/0461 ,  H03F3/345 ,  H03F2200/91 ,  H03H2011/0494

摘要： The fully electronically programmable complex filter employs a network of current amplifiers (CAs), each CA having differential pairs biased with different tail currents, the outputs being programmed by adjusting these tail currents. Each CA has an RC circuit at its input including a resistor R and a capacitor C, and a feedback path connecting one of its outputs to the RC circuit, thereby offering independent programmability of center frequency, pole frequency, and programmable gain. Optimal gain parameters set the electronically programmable pole frequency, gain and center frequency to accommodate Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) and Terrestrial Digital Multimedia Broadcasting (T-DMB).

摘要翻译： 全电子可编程复合滤波器采用电流放大器（CA）网络，每个CA具有由不同尾电流偏置的差分对，通过调整这些尾电流对输出进行编程。 每个CA在其输入端都有一个RC电路，包括一个电阻R和一个电容C，以及将其输出连接到RC电路的反馈路径，从而提供了中心频率，极点频率和可编程增益的独立可编程性。 最佳增益参数设置电子可编程极点频率，增益和中心频率，以适应地面综合业务数字广播（ISDB-T）和地面数字多媒体广播（T-DMB）。

公开(公告)号：US09054062B2

公开(公告)日：2015-06-09

申请号：US13040885

申请日：2011-03-04

申请人： Chris Olson

发明人： Chris Olson

IPC分类号： G01R19/00 ,  G01R29/22 ,  G01R1/00 ,  G11C5/14 ,  H01L21/66 ,  H03F3/345 ,  H05B33/08

CPC分类号： H01L22/34 ,  H01L2224/45124 ,  H01L2924/0002 ,  H03F3/345 ,  H03F2200/462 ,  H03F2203/45136 ,  H05B33/0827 ,  H01L2924/00

摘要： Methods and systems for providing current sensing over an extended area, such as a substrate of an integrated circuit, are described. The described methods and systems particularly describe a circuit layout procedure and configuration that can be used to carry out current sensing at diverse locations in the extended area.

摘要翻译： 描述了用于在扩展区域上提供电流感测的方法和系统，例如集成电路的基板。 所描述的方法和系统特别描述了可用于在扩展区域中的不同位置处执行电流感测的电路布局过程和配置。

公开(公告)号：US09024664B2

公开(公告)日：2015-05-05

申请号：US14018457

申请日：2013-09-05

申请人： ILI Technology Corp.

发明人： Chih-Jen Cheng ,  Cheng-Chung Hsu

IPC分类号： H02M11/00 ,  H03F3/45 ,  H02M1/00

CPC分类号： H02M1/00 ,  H03F3/345

摘要： A current-to-voltage converter which is used to receive an input current and to generate an output voltage accordingly comprises a current tracking bias circuit, a current-to-voltage unit, and a voltage clamp bias circuit. The current tracking bias circuit generates a first bias according to the input current. The current-to-voltage unit receives the first bias and the input current, and generates the output voltage according to the input current, wherein the first bias determines a range of the input current, the current-to-voltage unit has a first current control device, and the first current control device changes a current conduction level thereof in response to the first bias, such that a rising or falling speed of the output voltage is enhanced. The voltage clamp bias circuit clamps voltage levels of two ends where the voltage clamp bias circuit is connected to the current-to-voltage unit.

摘要翻译： 用于接收输入电流并产生输出电压的电流 - 电压转换器相应地包括电流跟踪偏置电路，电流 - 电压单元和电压钳位偏置电路。 电流跟踪偏置电路根据输入电流产生第一偏置。 电流 - 电压单元接收第一偏压和输入电流，并根据输入电流产生输出电压，其中第一偏压确定输入电流的范围，电流 - 电压单元具有第一电流 控制装置，并且第一电流控制装置响应于第一偏置改变其电流导通电平，使得输出电压的上升或下降速度增强。 电压钳位偏置电路钳位电压钳位偏置电路连接到电流 - 电压单元的两端的电压电平。

公开(公告)号：US20150002231A1

公开(公告)日：2015-01-01

申请号：US14315663

申请日：2014-06-26

申请人： Fairchild Semiconductor Corporation

发明人： Lei HUANG ,  Peng YANHAO

IPC分类号： H03F3/21 ,  G05F1/56

CPC分类号： H03F3/345 ,  H03F1/301

摘要： An output stage circuit is provided, which includes a power supply, a quiescent current control circuit, an output circuit, and a quiescent current equalization circuit. The quiescent current equalization circuit is configured to decrease or increase a quiescent current flowing through a quiescent current biasing circuit in the quiescent current control circuit when a change of a voltage of the power supply is detected, such that a quiescent current flowing through the output circuit remains constant. A quiescent current equalization method, a Class AB amplifier and an electronic device are also provided. When the voltage of the power supply is increased, the quiescent current of the output circuit of the output stage circuit can maintain constant. As such, the power supply rejection ratio (PSRR) of the output circuit can be efficiently increased and the power consumption of the device can be reduced.

摘要翻译： 提供一种输出级电路，其包括电源，静态电流控制电路，输出电路和静态电流均衡电路。 静态电流均衡电路被配置为当检测到电源的电压变化时，降低或增加流过静态电流控制电路中的静态电流偏置电路的静态电流，使得流过输出电路的静态电流 保持不变。 还提供了静态电流均衡方法，AB类放大器和电子器件。 当电源电压增加时，输出级电路的输出电路的静态电流可以保持恒定。 因此，可以有效地提高输出电路的电源抑制比（PSRR），并且可以降低器件的功耗。

公开(公告)号：US20150002131A1

公开(公告)日：2015-01-01

申请号：US14490399

申请日：2014-09-18

申请人： Seiko Instruments Inc.

发明人： Kosuke TAKADA ,  Masakazu SUGIURA

IPC分类号： G05F3/24 ,  G05F3/26

CPC分类号： G05F3/24 ,  G05F3/262 ,  G05F3/30 ,  H03F1/301 ,  H03F3/345

摘要： Provided is a reference voltage circuit capable of adjusting an arbitrary output voltage to have arbitrary temperature characteristics. The reference voltage circuit includes: a reference current generating circuit configured to convert a difference between forward voltages of a plurality of PN junction elements into current to generate a first current; a current generating circuit configured to use the first current generated by the reference current generating circuit to generate a second current; and a voltage generating circuit including a first resistive element and a second resistive element, the first resistive element being configured to generate a first voltage having positive temperature characteristics when the first current flows through the first resistive element, the second resistive element being configured to generate a second voltage having negative temperature characteristics when the first current and the second current flow through the second resistive element. The reference voltage circuit outputs a reference voltage obtained by adding the first voltage to the second voltage.

摘要翻译： 提供一种能够调节任意输出电压以具有任意温度特性的参考电压电路。 参考电压电路包括：参考电流产生电路，被配置为将多个PN结元件的正向电压之间的差转换为电流以产生第一电流; 电流产生电路，被配置为使用由所述参考电流产生电路产生的所述第一电流产生第二电流; 以及电压产生电路，包括第一电阻元件和第二电阻元件，所述第一电阻元件被配置为当所述第一电流流过所述第一电阻元件时产生具有正温度特性的第一电压，所述第二电阻元件被配置为产生 当第一电流和第二电流流过第二电阻元件时具有负温度特性的第二电压。 参考电压电路输出通过将第一电压加到第二电压而获得的参考电压。