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51 条记录 (耗时 0.015 秒)

    Variable gain amplifier
    3.
    发明授权
    Variable gain amplifier 有权
    可变增益放大器

    公开(公告)号：US08797098B2

    公开(公告)日：2014-08-05

    申请号：US13477926

    申请日：2012-05-22

    申请人： Shuo-Chun Kao ,  Nikola Nedovic

    发明人： Shuo-Chun Kao ,  Nikola Nedovic

    IPC分类号： H03F3/45

    CPC分类号： H03G3/00 ,  H03F3/45 ,  H03F3/45071 ,  H03F3/45183 ,  H03F3/45197 ,  H03F3/45206 ,  H03F2203/45008 ,  H03F2203/45372 ,  H03F2203/45374 ,  H03F2203/45562 ,  H03F2203/45644 ,  H03F2203/45702 ,  H03G1/0029

    摘要： A method may include applying an input differential voltage to input terminals of an amplifier, a first input terminal coupled to a gate of a first transistor and a second input terminal coupled to a gate of a second transistor. The method may also include varying a gain of the amplifier by varying at least one of: a resistance of a first resistor, the first resistor coupled between a source of the first transistor and a source of the second transistor; and a resistance of a second resistor, the second resistor coupled between a source of a third transistor and a source of a fourth transistor; wherein: the third transistor is coupled at its drain to the drain of the first transistor; and the fourth transistor is coupled at its drain to the drain of the second transistor and a gate of the third transistor and coupled at its gate to the drain of the third transistor.

    摘要翻译： 方法可以包括将输入差分电压施加到放大器的输入端，耦合到第一晶体管的栅极的第一输入端和耦合到第二晶体管的栅极的第二输入端。 该方法还可以包括通过改变以下至少一个来改变放大器的增益：第一电阻器的电阻，耦合在第一晶体管的源极和第二晶体管的源极之间的第一电阻器; 以及第二电阻器的电阻，所述第二电阻器耦合在第三晶体管的源极和第四晶体管的源极之间; 其中：所述第三晶体管在其漏极耦合到所述第一晶体管的漏极; 并且第四晶体管在其漏极耦合到第二晶体管的漏极和第三晶体管的栅极，并在其栅极处耦合到第三晶体管的漏极。

    Transmitter for transmitting a transmission signal
    4.
    发明授权
    Transmitter for transmitting a transmission signal 有权
    用于发送发送信号的发送器

    公开(公告)号：US08521105B2

    公开(公告)日：2013-08-27

    申请号：US11727101

    申请日：2007-03-23

    申请人： Chao-Cheng Lee

    发明人： Chao-Cheng Lee

    IPC分类号： H01Q11/12

    CPC分类号： H03F3/45206 ,  H03F1/0283 ,  H03F3/245 ,  H03F2200/451 ,  H03F2203/45028 ,  H03F2203/45511 ,  H03F2203/45638

    摘要： A transmitter for transmitting a transmission signal is disclosed. The transmitter includes: a gain stage, for receiving an input signal and amplifying the input signal according to a gain to generate an amplified signal; and an output stage, coupled to the gain stage, for receiving a first reference voltage signal and the amplified signal and utilizing the first reference voltage signal to perform a predetermined operation on the amplified signal to generate the output signal.

    摘要翻译： 公开了用于发送发送信号的发送机。 发射机包括：增益级，用于接收输入信号并根据增益放大输入信号以产生放大信号; 以及耦合到增益级的输出级，用于接收第一参考电压信号和放大信号，并利用第一参考电压信号对放大的信号执行预定的操作以产生输出信号。

    High speed differential to single-ended converter
    6.
    发明申请
    High speed differential to single-ended converter 有权
    高速差分至单端转换器

    公开(公告)号：US20030141935A1

    公开(公告)日：2003-07-31

    申请号：US10115179

    申请日：2002-04-02

    发明人： Yi-Huei Chen ,  Po-Chiun Huang

    IPC分类号： H03F003/04

    CPC分类号： H03F3/45206

    摘要： A differential to single-ended converter, which is composed of a transconductance amplifier, a current mirror and buffer circuit and a transimpedance stage, is disclosed. A differential voltage signal is provided to the inputs of the transconductance amplifier and converted to a differential current signal. The current mirror and buffer circuit serves as a differential to single-ended current conveyer and isolates the transconductance stage and the following transimpedance stage. Finally, the single-ended current signal is provided to the input of the transimpedance stage and converted to a single-ended current signal.

    摘要翻译： 公开了一种由跨导放大器，电流镜和缓冲电路以及跨导级组成的差分至单端转换器。 差分电压信号被提供给跨导放大器的输入并转换成差分电流信号。 电流镜和缓冲电路用作差分到单端电流输送机，并隔离跨导级和下一级跨阻级。 最后，将单端电流信号提供给跨阻级的输入，并转换为单端电流信号。

    Enhanced folded cascade voltage gain cell
    7.
    发明授权
    Enhanced folded cascade voltage gain cell 有权
    增强折叠级联电压增益单元

    公开(公告)号：US06518841B1

    公开(公告)日：2003-02-11

    申请号：US09929194

    申请日：2001-08-14

    申请人： Giorgio Mariani ,  Valter Orlandini

    发明人： Giorgio Mariani ,  Valter Orlandini

    IPC分类号： H03F345

    CPC分类号： H03F3/45206 ,  H03F3/45654 ,  H03F2203/45574

    摘要： A folded cascade voltage gain cell is implemented in a single stage by collapsing p-channel transistor branches receiving output currents from two sets of n-channel transistor branches and producing the output voltage into a single set of branches, summing the output currents from two sets of n-channel transistor branches in a single pair of nodes. While power consumption is only slightly improved over multistage folded cascade voltage gain cells, the circuit is implemented with fewer transistors and is therefore smaller and more reliable. Moreover, because only one gain stage is employed with a smaller number of internal nodes, the circuit's operation contains a smaller number of poles, and bandwidth is improved.

    摘要翻译： 折叠的级联电压增益单元通过收缩来自两组n沟道晶体管分支的输出电流的p沟道晶体管分支，并将输出电压产生为单个分支集合，在单级中实现，将来自两组的输出电流相加 的n沟道晶体管分支在一对节点中。 虽然功率消耗仅比多级折叠级联电压增益单元稍微改善，但是该电路采用更少的晶体管来实现，因此更小且更可靠。 此外，由于只有一个增益级采用较少数量的内部节点，所以电路的操作包含较少数量的极点，并且带宽得到改善。

    LOW NOISE AMPLIFIER
    9.
    发明申请
    LOW NOISE AMPLIFIER 有权
    低噪音放大器

    公开(公告)号：US20170019074A1

    公开(公告)日：2017-01-19

    申请号：US15278949

    申请日：2016-09-28

    申请人： SOCIONEXT INC.

    发明人： Takahiro BOKUI ,  Hiroshi KIMURA

    IPC分类号： H03F1/26 ,  H03F1/32 ,  H03F3/45

    CPC分类号： H03F1/26 ,  H03F1/0205 ,  H03F1/3211 ,  H03F3/45 ,  H03F3/45071 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/45197 ,  H03F3/45206 ,  H03F2200/294 ,  H03F2200/513 ,  H03F2200/555 ,  H03F2203/45494

    摘要： A low noise amplifier includes: first and seventh transistors configured to respectively receive first and second input signals; second, third, and fifth transistors connected to the first transistor; eighth, ninth, and eleventh transistors connected to the seventh transistor; a third resistive element; fourth and tenth transistors respectively connected to the third and ninth transistors; sixth and twelfth transistors respectively connected to second and first output terminals; and first and second resistive elements.

    摘要翻译： 低噪声放大器包括：第一和第七晶体管，被配置为分别接收第一和第二输入信号; 连接到第一晶体管的第二，第三和第五晶体管; 第八，第九和第十三晶体管连接到第七晶体管; 第三电阻元件; 分别连接到第三和第九晶体管的第四和第十晶体管; 第六和第十二晶体管分别连接到第二和第一输出端子; 以及第一和第二电阻元件。

    ELIMINATING SYSTEMATIC IMBALANCES AND REDUCING CIRCUIT PARAMETER VARIATIONS IN HIGH GAIN AMPLIFIERS
    10.
    发明申请
    ELIMINATING SYSTEMATIC IMBALANCES AND REDUCING CIRCUIT PARAMETER VARIATIONS IN HIGH GAIN AMPLIFIERS 审中-公开
    消除系统性不平衡和降低高增益放大器中的电路参数变化

    公开(公告)号：US20150381118A1

    公开(公告)日：2015-12-31

    申请号：US14317642

    申请日：2014-06-27

    申请人： LSI Corporation

    发明人： Shyam S. Sivakumar ,  Hiep T. Pham ,  Bradley Wright

    IPC分类号： H03F1/30 ,  H03G3/30 ,  H03F3/16

    CPC分类号： H03F1/301 ,  H03F3/45197 ,  H03F3/45206 ,  H03F3/45744 ,  H03F2200/375 ,  H03F2203/45302 ,  H03F2203/45398 ,  H03G1/0029 ,  H03G3/30

    摘要： Methods and devices for eliminating a systematic imbalance and reducing variations in circuit parameters for a high gain amplifies. A bias generator having a copy of an actual amplifier branch and an already generated bias voltage can be added to the amplifier to generate a bias voltage for a final current source at a current summing node so as to eliminate systematic imbalance in the bias current. A high impedance node can be wired in the bias generator such that all devices in the bias generator are in saturation across, for example, PVT (Process, Voltage and Temperature) corners in order to minimize tracking errors. A degeneration transistor similar to a differential pair element can be split into two equal halves.

    摘要翻译： 用于消除系统不平衡并减少高增益放大电路参数变化的方法和装置。 具有实际放大器支路和已经产生的偏置电压的复制的偏置发生器可以被添加到放大器以在电流求和节点处产生用于最终电流源的偏置电压，以消除偏置电流中的系统不平衡。 高阻抗节点可以布线在偏置发生器中，使得偏置发生器中的所有器件例如在PVT（过程，电压和温度）角落处于饱和状态，以便最小化跟踪误差。 类似于差分对元件的退化晶体管可以分成两个相等的两半。