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    SYSTEMS AND METHODS FOR BOOSTING A RECEIVED AC SIGNAL USING A POWER AMPLIFIER INCLUDING PHASE CONDITIONERS
    42.
    发明申请
    SYSTEMS AND METHODS FOR BOOSTING A RECEIVED AC SIGNAL USING A POWER AMPLIFIER INCLUDING PHASE CONDITIONERS 审中-公开
    使用包括相位调节器的功率放大器来提升接收的交流信号的系统和方法

    公开(公告)号：US20140125417A1

    公开(公告)日：2014-05-08

    申请号：US14154499

    申请日：2014-01-14

    申请人： Marvell World Trade LTD.

    发明人： Sehat Sutardja ,  Poh Boon Leong ,  Ping Song ,  Nuntha Kumar Krishnasamy Maniam

    IPC分类号： H03F3/21

    CPC分类号： H03F3/211 ,  H03F1/223 ,  H03F3/193 ,  H03F3/245 ,  H03F3/45179 ,  H03F3/45188 ,  H03F2200/408 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/45544 ,  H03F2203/45562 ,  H03F2203/45566 ,  H03F2203/45621 ,  H03F2203/45644 ,  H03F2203/45731

    摘要： A power amplifier configured to boost an AC signal. The power amplifier includes a first transistor, a second transistor, a first inductor connected between the first transistor and a voltage source, and a second inductor connected between the second transistor and ground. A first phase conditioner arranged at an input of the first transistor is configured to condition a phase of the AC signal such that the AC signal as received by the first transistor is out of phase with respect to the AC signal as received by the first inductor. A second phase conditioner arranged at an input of the second transistor is configured to condition a phase of the AC signal such that the AC signal as received by the second transistor is out of phase with respect to the AC signal as received by the second inductor.

    摘要翻译： 功率放大器，被配置为升高AC信号。 功率放大器包括第一晶体管，第二晶体管，连接在第一晶体管和电压源之间的第一电感器，以及连接在第二晶体管和地之间的第二电感器。 布置在第一晶体管的输入处的第一相位调节器被配置为调节AC信号的相位，使得由第一晶体管接收的AC信号相对于由第一电感器接收的AC信号而异相。 布置在第二晶体管的输入处的第二相位调节器被配置为调节AC信号的相位，使得由第二晶体管接收的AC信号相对于由第二电感器接收的AC信号而异相。

    Fourth-order electrical current source apparatus, systems and methods
    43.
    发明授权
    Fourth-order electrical current source apparatus, systems and methods 有权
    四阶电流源装置，系统及方法

    公开(公告)号：US08436682B1

    公开(公告)日：2013-05-07

    申请号：US13279042

    申请日：2011-10-21

    申请人： Charles Parkhurst ,  Mark Hamlyn

    发明人： Charles Parkhurst ,  Mark Hamlyn

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45183 ,  H03F2203/45248 ,  H03F2203/45454 ,  H03F2203/45566 ,  H03F2203/45648 ,  H03F2203/45658

    摘要： Apparatus and methods disclosed herein operate to receive a differential input signal at a first-stage pair of transconductance devices. The differential signal is amplified by a second-order factor at a positive-side or a negative-side first-stage transconductance device, depending upon the polarity of the differential input signal, to create a second-order signal at the output of the appropriate first-stage device. The second-order output signal is then amplified by another second-order factor at a corresponding second-stage transconductance device. A resulting fourth-order signal is made available at an output node as a quartic-response current source. The quartic-response current source may be utilized as a dynamic bias source in conjunction with a linear amplifier to provide a high slew rate amplifier.

    摘要翻译： 本文公开的装置和方法用于在第一级跨导装置对接收差分输入信号。 根据差分输入信号的极性，差分信号在正侧或负侧第一级跨导器件被二次因数放大，以在适当的输出端产生二阶信号 第一阶段装置 二阶输出信号然后在相应的第二级跨导器件被另一个二阶因子放大。 得到的四阶信号在输出节点作为四次响应电流源可用。 四线性响应电流源可以与线性放大器一起用作动态偏置源，以提供高转换速率放大器。

    OPERATION AMPLIFIER AND CIRCUIT FOR PROVIDING DYNAMIC CURRENT THEREOF
    44.
    发明申请
    OPERATION AMPLIFIER AND CIRCUIT FOR PROVIDING DYNAMIC CURRENT THEREOF 失效
    用于提供动态电流的操作放大器和电路

    公开(公告)号：US20080272839A1

    公开(公告)日：2008-11-06

    申请号：US11831975

    申请日：2007-08-01

    申请人： Ju-Lin Huang

    发明人： Ju-Lin Huang

    IPC分类号： G06G7/12

    CPC分类号： H03F3/45179 ,  H03F1/0205 ,  H03F3/45475 ,  H03F2203/45248 ,  H03F2203/45511 ,  H03F2203/45541 ,  H03F2203/45566

    摘要： An operation amplifier (op-amp) and a circuit for providing dynamic current thereof are disclosed. The circuit can be applied to any current op-amp. The circuit comprises two transistors which are simultaneously or non-simultaneously turned on as the input signals respectively received by the first input and the second input of the op-amp get a transition, namely, as the op-amp is in the transient state, so as to increase the bias current at the first input terminal or/and the second input terminal of the op-amp by a dynamic current. Therefore, not only the internal slew rate of the op-amp can be accelerated by the circuit of the present invention, but also the power consumption of the op-amp can not be increased by the circuit of the present invention as the op-amp in the steady state.

    摘要翻译： 公开了一种运算放大器（op-amp）和用于提供动态电流的电路。 该电路可以应用于任何当前的运算放大器。 该电路包括同时或不同时接通的两个晶体管，因为分别由第一输入端接收的输入信号和运算放大器的第二输入端获得转换，即当运算放大器处于暂态状态时， 以便通过动态电流来增加运算放大器的第一输入端子或/和第二输入端子处的偏置电流。 因此，不仅可以通过本发明的电路来加速运算放大器的内部转换速率，而且通过作为运算放大器的本发明的电路也不能增加运算放大器的功耗 处于稳定状态。

    Transmission circuit for use in input/output interface
    45.
    发明申请
    Transmission circuit for use in input/output interface 有权
    用于输入/输出接口的传输电路

    公开(公告)号：US20070069769A1

    公开(公告)日：2007-03-29

    申请号：US11482731

    申请日：2006-07-10

    申请人： Min Kao ,  Zee Jen ,  Jen Wu ,  Ching Chiu ,  Shuo Hsu

    发明人： Min Kao ,  Zee Jen ,  Jen Wu ,  Ching Chiu ,  Shuo Hsu

    IPC分类号： H03B1/00

    CPC分类号： H03F1/34 ,  H03F3/45183 ,  H03F2200/36 ,  H03F2203/45318 ,  H03F2203/45366 ,  H03F2203/45566 ,  H03F2203/45684

    摘要： A transmission circuit includes a first-stage circuit, a second-stage circuit, a negative active feedback circuit and a current buffer. The first-stage circuit includes at least an active MOS device for receiving an input voltage and issuing a first voltage signal. The active MOS device has an inductive feature during operation in a high frequency mode to compensate the first voltage signal. In response to the first voltage signal, the second-stage circuit outputs a first output voltage. The negative active feedback circuit may enhance the bandwidth of the first output voltage. The current buffer may enhance the gain value of the first output voltage. A second voltage signal is issued from the first-stage circuit and compensated by the first output voltage transmitted from the current buffer to enhance the bandwidth and the gain value thereof. In response to the compensated second voltage signal, the second-stage circuit outputs a second output voltage.

    摘要翻译： 传输电路包括第一级电路，第二级电路，负有源反馈电路和电流缓冲器。 第一级电路至少包括用于接收输入电压并发出第一电压信号的有源MOS器件。 有源MOS器件在高频模式下工作期间具有电感特性以补偿第一电压信号。 响应于第一电压信号，第二级电路输出第一输出电压。 负的有源反馈电路可以增强第一输出电压的带宽。 当前的缓冲器可以增强第一输出电压的增益值。 从第一级电路发出第二电压信号，并通过从当前缓冲器发送的第一输出电压补偿第二电压信号，以增强带宽及其增益值。 响应于补偿的第二电压信号，第二级电路输出第二输出电压。

    Variable-gain amplifier having error amplifier with constant loop gain
    47.
    发明授权
    Variable-gain amplifier having error amplifier with constant loop gain 有权
    具有恒定环路增益的误差放大器的可变增益放大器

    公开(公告)号：US06894564B1

    公开(公告)日：2005-05-17

    申请号：US10673095

    申请日：2003-09-25

    申请人： Barrie Gilbert

    发明人： Barrie Gilbert

    IPC分类号： H03F3/45 ,  H03G1/00

    CPC分类号： H03G1/0023 ,  H03F3/45 ,  H03F3/45085 ,  H03F2203/45466 ,  H03F2203/45566 ,  H03F2203/45682 ,  H03F2203/45692

    摘要： A translinear amplifier is disclosed. A loop amplifier drives the bases of the input and output transistor pairs from the differential collector voltage of the input pair. The loop amplifier contains a third differential pair (a gain pair). The tail current of the gain pair is inversely related to the tail current of the input pair, such that loop amplifier gain remains stable when the transconductance of the input pair changes (due, e.g., to input gain changes). In one embodiment, a linear-in-dB interface is provided that adjusts input pair tail current exponentially (and gain pair tail current exponentially and inversely) to linear voltage changes at a gain input.

    摘要翻译： 公开了一种跨线性放大器。 环路放大器从输入对的差分集电极电压驱动输入和输出晶体管对的基极。 环路放大器包含第三差分对（增益对）。 增益对的尾部电流与输入对的尾部电流成反比，使得当输入对的跨导改变（由于例如输入增益变化）时，环路放大器增益保持稳定。 在一个实施例中，提供了在增益输入处将输入对尾部电流指数地（和增益对尾部电流指数地和相反地）调整为线性电压变化的线性dB接口。

    Low distortion amplifier
    48.
    发明授权
    Low distortion amplifier 有权

    公开(公告)号：US06600367B2

    公开(公告)日：2003-07-29

    申请号：US09915190

    申请日：2001-07-24

    申请人： Bruce Halcro Candy

    发明人： Bruce Halcro Candy

    IPC分类号： H06F352

    CPC分类号： H03F3/3018 ,  H03F3/42 ,  H03F3/4517 ,  H03F2203/30078 ,  H03F2203/30111 ,  H03F2203/45566

    摘要： An electronic amplifier providing very low distortion which includes an output stage with an output error correction stage containing two amplifiers and wherein there are at least four local negative feedback paths, an output of the first amplifier being connected to an input of output stage transistor buffers or output stage transistors through a first network, an output of the second amplifier being connected to an input of output stage transistor buffers or output stage transistors through a second network, where components of the first and second amplifier the local negative feedback paths, first and second networks and output stage transistor buffers are selected to form substantially second order local dominant pole. Also disclosed is the supply of power to said first and second amplifiers from a floating power supply means coupled to either an or the output of the output stage so that the voltage of the floating power supply will follow substantially an output voltage of the output stage.