公开(公告)号：US09954503B2

公开(公告)日：2018-04-24

申请号：US14626491

申请日：2015-02-19

申请人： SOCIONEXT INC.

发明人： Tomoyuki Arai

IPC分类号： H03G1/00 ,  H03F3/45 ,  H03G3/00

CPC分类号： H03G1/0029 ,  H03F3/45197 ,  H03F2203/45494 ,  H03F2203/45496 ,  H03F2203/45504 ,  H03F2203/45702 ,  H03G1/0088 ,  H03G3/001 ,  H03G2201/40

摘要： A differential amplification circuit includes: a first transistor and a second transistor of a differential pair; first and second loads; current sources; and a resistor circuit, wherein the resistor circuit includes: a coarse adjustment part and a fine adjustment part, one of the coarse adjustment part and the fine adjustment part includes a first lateral adjustment part and a second lateral adjustment part which have the same configuration, the first lateral adjustment part and the second lateral adjustment part are connected symmetrically to both sides of a central adjustment part, and the central adjustment part has a circuit configuration symmetrical with respect to two connection nodes with the first lateral adjustment part and the second lateral adjustment part.

公开(公告)号：US09680418B2

公开(公告)日：2017-06-13

申请号：US14941366

申请日：2015-11-13

申请人： QUALCOMM Incorporated

发明人： Xiaobin Yuan ,  Joseph Natonio ,  Kevin Robert Bartholomew ,  Mangal Prasad

IPC分类号： H03F3/45 ,  H03F1/02 ,  H03G3/20

CPC分类号： H03G3/20 ,  H03F1/301 ,  H03F3/45197 ,  H03F3/45479 ,  H03F2203/45154 ,  H03F2203/45458 ,  H03F2203/45488 ,  H03F2203/45494 ,  H03G1/0023 ,  H03G1/0029 ,  H03G5/28 ,  H03K19/018514

摘要： A voltage gain amplifier (VGA) configured to have reduced supply noise. The VGA includes first resistor, first FET, and a first current-source coupled between first and second voltage rails. The VGA includes second resistor, second FET, and second current-source coupled between the voltage rails. A variable resistor is coupled between the respective sources of the first and second FETs. Variable capacitors are coupled between the first or a third voltage rail and the sources of the first and second input FETs, respectively. If capacitors are coupled to the first voltage rail, noise cancellation occurs across the gate-to-source voltages of the FETs if an input differential signal applied to the gates of the FETs is derived from a supply voltage at the first voltage rail. If capacitors are coupled to the third rail, supply noise is reduced if the supply voltage at the third rail is generated by a cleaner regulator.

公开(公告)号：US20160373079A1

公开(公告)日：2016-12-22

申请号：US15254894

申请日：2016-09-01

申请人： Texas Instruments Incorporated

发明人： Rajendrakumar Joish

IPC分类号： H03G1/00 ,  H04B1/10 ,  H03F3/45

CPC分类号： H03G1/0082 ,  H03F1/26 ,  H03F3/45085 ,  H03F3/45098 ,  H03F3/72 ,  H03F2200/294 ,  H03F2203/45026 ,  H03F2203/45202 ,  H03F2203/45466 ,  H03F2203/45494 ,  H03F2203/45496 ,  H03F2203/45504 ,  H03F2203/7233 ,  H03G1/0035 ,  H03G1/0088 ,  H03G3/001 ,  H03G3/3052 ,  H04B1/1036 ,  H04B1/18

摘要： The disclosure provides an amplifier. The amplifier includes a first transistor that receives a first input. A second transistor receives a second input. A plurality of impedance networks is coupled between the first transistor and the second transistor. At least one impedance network of the plurality of impedance networks includes a first impedance path and a second impedance path. The first impedance path is activated during single ended operation, and the second impedance path is activated during differential operation.

公开(公告)号：US09397623B1

公开(公告)日：2016-07-19

申请号：US14633866

申请日：2015-02-27

申请人： Huawei Technologies Co., Ltd.

发明人： Marc-Andre Lacroix

IPC分类号： H03H7/30 ,  H03F3/45 ,  H03F3/193 ,  H04L25/03

CPC分类号： H04L25/03885 ,  H03F3/193 ,  H03F3/45197 ,  H03F2203/45112 ,  H03F2203/45222 ,  H03F2203/45488 ,  H03F2203/45494 ,  H03G5/14

摘要： A transadmittance amplifier stage is coupled to a transimpedance amplifier stage to form a continuous time linear equalizer. The transadmittance amplifier stage has first and second gain paths and is configured to input a first signal and output a second signal. The first gain path is configured to provide a DC gain recovery and a first high frequency gain to the first signal. The second gain path is configured to provide a second high frequency gain to the first signal. The second signal is generated by the transadmittance amplifier stage based on the gain recovery of the first signal and the high frequency gains of the first signal. The transimpedance amplifier stage is configured to input the second signal from the transadmittance amplifier stage and convert the second signal to an output voltage signal.

摘要翻译： 跨导放大器级耦合到跨阻放大器级以形成连续时间线性均衡器。 互导体放大器级具有第一和第二增益路径，并且被配置为输入第一信号并输出​​第二信号。 第一增益路径被配置为向第一信号提供DC增益恢复和第一高频增益。 第二增益路径被配置为向第一信号提供第二高频增益。 基于第一信号的增益恢复和第一信号的高频增益，由导纳放大器级产生第二信号。 跨阻放大器级被配置为输入来自互导体放大器级的第二信号，并将第二信号转换为输出电压信号。

公开(公告)号：US20140050260A1

公开(公告)日：2014-02-20

申请号：US13962900

申请日：2013-08-08

申请人： Marvell World Trade Ltd.

发明人： Sasan CYRUSIAN

IPC分类号： H04L27/01

CPC分类号： H04L27/01 ,  H03F3/45201 ,  H03F2203/45494 ,  H04L25/03114 ,  H04L25/03248

摘要： An apparatus includes an input, an output, an equalizer configured to receive an input signal at the input and to output an output signal for the output, and a reset block coupled to the equalizer and the output. The reset block is configured to pull the output signal at the output toward a bias voltage level based on a reset signal.

摘要翻译： 一种装置包括输入端，输出端，均衡器，被配置为在输入端接收输入信号并输出​​输出信号，以及耦合到均衡器和输出端的复位块。 复位块被配置为基于复位信号将输出端处的输出信号拉向偏置电压电平。

公开(公告)号：US08364109B2

公开(公告)日：2013-01-29

申请号：US12536644

申请日：2009-08-06

申请人： Ching-Feng Lee

发明人： Ching-Feng Lee

IPC分类号： H04B1/06 ,  H04K3/00

CPC分类号： H03F3/4508 ,  H03F1/0277 ,  H03F3/19 ,  H03F3/211 ,  H03F3/45085 ,  H03F3/45098 ,  H03F3/72 ,  H03F2200/171 ,  H03F2200/222 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/78 ,  H03F2203/21142 ,  H03F2203/45392 ,  H03F2203/45494 ,  H03F2203/45496 ,  H03F2203/45702 ,  H03G1/0023 ,  H03G1/0088 ,  H03G3/3068

摘要： A receiver including an amplifier module, a control unit, a mixer and an IF amplifier is provided. The amplifier module, including multiple amplifier units with different gains, amplifies an input signal. The control unit enables at least one of the amplifier units according to a gain control signal, wherein the enabled at least one amplifier unit generates an output RF signal in response to the input signal. The mixer coupled with each amplifier unit in series down-converts the output RF signal into an IF signal according to a local oscillation frequency. The IF amplifier having a variable gain is coupled to the mixer for amplifying the IF signal to an output signal according to the gain control signal. The control unit obtains the gain control signal according to the output signal and a reference signal.

摘要翻译： 提供了包括放大器模块，控制单元，混频器和IF放大器的接收器。 放大器模块包括具有不同增益的多个放大器单元，放大输入信号。 所述控制单元根据增益控制信号使能至少一个所述放大器单元，其中所述使能的至少一个放大器单元响应于所述输入信号产生输出RF信号。 与每个放大器单元串联的混频器根据本地振荡频率将输出RF信号降频转换成IF信号。 具有可变增益的IF放大器耦合到混频器，用于根据增益控制信号将IF信号放大到输出信号。 控制单元根据输出信号和参考信号获得增益控制信号。

公开(公告)号：US20120001675A1

公开(公告)日：2012-01-05

申请号：US13234704

申请日：2011-09-16

申请人： Hiroyuki OKADA

发明人： Hiroyuki OKADA

IPC分类号： G06G7/14

CPC分类号： H03L7/099 ,  H03F3/45179 ,  H03F3/45197 ,  H03F2203/45288 ,  H03F2203/45481 ,  H03F2203/45494 ,  H03L7/0805

摘要： The present invention is intended to achieve a transconductance amplifier and a voltage/current converting method which can provide a sufficient amplitude and a high degree of design freedom. The method comprises the steps of converting a first voltage signal to a first current signal; converting a second voltage signal to a second current signal; obtaining the common-mode components of the first and second current signals; and subtracting the common-mode components from the first and second current signals to obtain third and fourth signals, and further, subtracting the fourth current signal from the third current signal to generate a first output, while subtracting the third current signal from the fourth current signal to generate a second output.

摘要翻译： 本发明旨在实现能够提供足够的幅度和高度设计自由度的跨导放大器和电压/电流转换方法。 该方法包括以下步骤：将第一电压信号转换成第一电流信号; 将第二电压信号转换为第二电流信号; 获得第一和第二电流信号的共模分量; 以及从第一和第二电流信号中减去共模分量以获得第三和第四信号，并且还从第三电流信号中减去第四电流信号以产生第一输出，同时从第四电流减去第三电流信号 信号以产生第二输出。

公开(公告)号：US08022764B2

公开(公告)日：2011-09-20

申请号：US12715566

申请日：2010-03-02

申请人： Shigehito Saigusa

发明人： Shigehito Saigusa

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/45197 ,  H03F3/45659 ,  H03F2203/45082 ,  H03F2203/45418 ,  H03F2203/45494 ,  H03F2203/45642 ,  H03F2203/45646 ,  H03F2203/45648 ,  H03F2203/45686 ,  H03F2203/45702

摘要： A differential amplifier unit and a feedback unit are provided. The differential amplifier unit includes first and second transistors and first to fourth loads. Each of the first and second transistors is provided with a current input end, a current output end connected to a lower potential power source and a control end. The first and second loads are cascade connected between a higher potential power source and the current input end of the first transistor. The third and fourth loads are cascade connected between the higher potential power source and the current input end of the second transistor. The feedback unit generates first and second feedback currents based on first and second output voltages. The feedback unit inputs the first and second feedback currents to a third node connecting the first and second loads and a fourth node connecting the third and fourth loads.

摘要翻译： 提供了差分放大器单元和反馈单元。 差分放大器单元包括第一和第二晶体管以及第一至第四负载。 第一和第二晶体管中的每个具有电流输入端，连接到较低电位电源的电流输出端和控制端。 第一和第二负载级联连接在较高电位的电源和第一晶体管的电流输入端之间。 第三和第四负载级联连接在高电位电源和第二晶体管的电流输入端之间。 反馈单元基于第一和第二输出电压产生第一和第二反馈电流。 反馈单元将第一和第二反馈电流输入到连接第一和第二负载的第三节点和连接第三和第四负载的第四节点。

公开(公告)号：US20110121871A1

公开(公告)日：2011-05-26

申请号：US12950462

申请日：2010-11-19

申请人： Hiroyuki OKADA

发明人： Hiroyuki OKADA

IPC分类号： H03L7/08 ,  H03F3/45 ,  H03L7/00

CPC分类号： H03L7/099 ,  H03F3/45179 ,  H03F3/45197 ,  H03F2203/45288 ,  H03F2203/45481 ,  H03F2203/45494 ,  H03L7/0805

摘要： The present invention is intended to achieve a transconductance amplifier and a voltage/current converting method which can provide a sufficient amplitude and a high degree of design freedom. The method comprises the steps of converting a first voltage signal to a first current signal; converting a second voltage signal to a second current signal; obtaining the common-mode components of the first and second current signals; and subtracting the common-mode components from the first and second current signals to obtain third and fourth signals, and further, subtracting the fourth current signal from the third current signal to generate a first output, while subtracting the third current signal from the fourth current signal to generate a second output.

摘要翻译： 本发明旨在实现能够提供足够的幅度和高度设计自由度的跨导放大器和电压/电流转换方法。 该方法包括以下步骤：将第一电压信号转换成第一电流信号; 将第二电压信号转换为第二电流信号; 获得第一和第二电流信号的共模分量; 以及从第一和第二电流信号中减去共模分量以获得第三和第四信号，并且还从第三电流信号中减去第四电流信号以产生第一输出，同时从第四电流减去第三电流信号 信号以产生第二输出。

公开(公告)号：US07944287B2

公开(公告)日：2011-05-17

申请号：US12229278

申请日：2008-08-21

申请人： Tony R. Larson ,  Dimitar T. Trifonov ,  Jerry L. Doorenbos

发明人： Tony R. Larson ,  Dimitar T. Trifonov ,  Jerry L. Doorenbos

IPC分类号： H03F1/02

CPC分类号： H03F3/45475 ,  H03F3/45183 ,  H03F3/45197 ,  H03F3/45928 ,  H03F3/72 ,  H03F2203/45101 ,  H03F2203/45482 ,  H03F2203/45494 ,  H03F2203/45616 ,  H03F2203/45678 ,  H03F2203/45681

摘要： A programmable offset amplifier includes first (M1) and second (M2) input transistors having differentially connected sources and gates coupled to first (Vin+) and second (Vin−) input voltages. A tail current (Itail1) is shared between the first and second input transistors. First (M3) and second (M4) load devices are coupled between a reference voltage and drains of the first and second input transistors, respectively. An output stage (13) has a first input (+) coupled to the drain of the second input transistor and a second input (−) coupled to the drain of the first input transistor. Programmable voltage changes are produced on input elements of programmable input offset circuitry to cause changes in offset voltages associated with electrodes of the input transistors which are reflected back to the amplifier input to provide a large programmable input-referred offset voltage.

摘要翻译： 可编程偏移放大器包括具有与第一（Vin +）和第二（Vin-）输入电压耦合的差分连接的源极和第一（M1）和第二（M2）输入晶体管。 尾电流（Itail1）在第一和第二输入晶体管之间共享。 第一（M3）和第二（M4）负载装置分别耦合在参考电压和第一和第二输入晶体管的漏极之间。 输出级（13）具有耦合到第二输入晶体管的漏极的第一输入（+）和耦合到第一输入晶体管的漏极的第二输入（ - ）。 可编程电压变化在可编程输入偏移电路的输入元件上产生，以引起与输入晶体管的电极相关联的偏移电压的变化，其被反射回到放大器输入端以提供大的可编程输入参考偏移电压。