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    Broadband linear transconductance amplifier with resistive pole-splitting compensation
    2.
    发明授权
    Broadband linear transconductance amplifier with resistive pole-splitting compensation 失效
    宽带线性跨导放大器，具有电阻分支补偿

    公开(公告)号：US5917379A

    公开(公告)日：1999-06-29

    申请号：US903012

    申请日：1997-07-31

    申请人： Kirk B Ashby ,  Paul C. Davis

    发明人： Kirk B Ashby ,  Paul C. Davis

    IPC分类号： H03F3/45

    CPC分类号： H03F3/4508 ,  H03F3/45179 ,  H03F3/45278 ,  H03F3/45286 ,  H03F3/45304 ,  H03F2203/45184 ,  H03F2203/45298 ,  H03F2203/45304 ,  H03F2203/45466 ,  H03F2203/45471 ,  H03F2203/45496

    摘要： A compensation scheme for differential- or single-input transconductance amplifiers relies on an active feedback path with a resistive pole-splitting compensation circuit. The resistive compensation circuit causes pole-splitting of the two dominant poles, moving one pole to a slightly lower frequency and the other to a much higher frequency compared to the dominant poles of the uncompensated amplifier. A DC-blocking capacitor may also be placed in series with the resistor of the compensation circuit to allow for proper biasing of the circuit. By selecting appropriate values for the passive elements in the compensation circuit, the compensation scheme of the present invention can cause the amplifier to operate in a stable, linear manner over the same or even a larger bandwidth than an equivalent amplifier without compensation. The present invention does not suffer the problems of standard narrowbanding compensation schemes associated with high frequency cut-off.

    摘要翻译： 差分或单输入跨导放大器的补偿方案依赖于具有电阻分极补偿电路的有源反馈路径。 电阻补偿电路引起两个主极的极分裂，将一极移动到稍低的频率，另一个极点与未补偿放大器的主极相比更高的频率。 隔离电容器也可以与补偿电路的电阻串联放置，以允许电路的适当偏置。 通过为补偿电路中的无源元件选择合适的值，本发明的补偿方案可以使得放大器在与补偿相等或甚至更大的带宽相同或甚至更大的带宽上以稳定的线性方式工作。 本发明不存在与高频截止相关的标准窄带补偿方案的问题。

    Tunable operational transcondunctance amplifier having high linearity
    4.
    发明授权
    Tunable operational transcondunctance amplifier having high linearity 失效
    具有高线性度的可调式运算倍增放大器

    公开(公告)号：US5465072A

    公开(公告)日：1995-11-07

    申请号：US286526

    申请日：1994-08-05

    申请人： Mojtaba Atarodi

    发明人： Mojtaba Atarodi

    IPC分类号： H03F3/30 ,  H03F3/45 ,  H03G1/00 ,  H03G3/30

    CPC分类号： H03F3/4521 ,  H03F3/3008 ,  H03F3/45107 ,  H03F3/45291 ,  H03F3/45304 ,  H03F3/45802 ,  H03G1/0023 ,  H03F2203/45304 ,  H03F2203/45366 ,  H03F2203/45458

    摘要： An amplifier capable of being tuned to provide linear gain over a selected input signal range is disclosed herein. The amplifier includes an input stage for receiving an input signal. The amplifier further includes a tuning circuit, connected between the input stage and an amplifier output stage, for controlling gain of the amplifier by adjusting a tuning current supplied to the amplifier output stage. The tuning circuit may be realized with a differential transistor pair connected to a pair of transistors within the output stage. In a preferred implementation the input and output stages are arranged in a folded-cascode configuration so as to improve the output impedance and input common-mode signal range of the amplifier.

    摘要翻译： 本文公开了一种能够调谐以在所选输入信号范围上提供线性增益的放大器。 放大器包括用于接收输入信号的输入级。 放大器还包括连接在输入级和放大器输出级之间的调谐电路，用于通过调节提供给放大器输出级的调谐电流来控制放大器的增益。 调谐电路可以通过连接到输出级内的一对晶体管的差分晶体管对来实现。 在优选实施例中，输入和输出级以折叠共源共栅配置布置，以便改善放大器的输出阻抗和输入共模信号范围。

    Switchable high-pass configuration and an optical receiver with a switchable high-pass configuration
    5.
    发明申请
    Switchable high-pass configuration and an optical receiver with a switchable high-pass configuration 有权
    可切换的高通配置和具有可切换高通配置的光接收器

    公开(公告)号：US20070001755A1

    公开(公告)日：2007-01-04

    申请号：US11104707

    申请日：2005-04-13

    申请人： Ing. Schrödinger

    发明人： Ing. Schrödinger

    IPC分类号： H03B1/00

    CPC分类号： H03H11/0405 ,  H03F1/223 ,  H03F3/45304

    摘要： The invention relates to a switchable high-pass filter arrangement which has a lower limiting frequency determining the high-pass filter behavior. The arrangement includes a transistor circuit, which has at least one transistor in a common-gate or common-base connection; a capacitive component in series with the input of the transistor circuit; and a programmable device for setting the operating current of the transistor circuit. In this case, the limiting frequency of the high-pass filter arrangement is switchable by means of the programmable device for setting the operating current of the transistor circuit. This creates a switchable high-pass filter arrangement which does not have any changeover switches in the signal path, is suitable for radiofrequency applications and can be produced in a simple manner. The invention furthermore relates to an optical receiver having a high-pass filter arrangement of this type.

    摘要翻译： 本发明涉及一种可切换的高通滤波器装置，其具有确定高通滤波器行为的较低限制频率。 该装置包括晶体管电路，其在共栅或共基极连接中具有至少一个晶体管; 与晶体管电路的输入串联的电容分量; 以及用于设置晶体管电路的工作电流的可编程器件。 在这种情况下，高通滤波器装置的限制频率可通过用于设置晶体管电路的工作电流的可编程装置来切换。 这就产生了一种在信号路径中没有任何切换开关的可切换高通滤波器装置，适用于射频应用，并且可以以简单的方式产生。 本发明还涉及具有这种类型的高通滤波器装置的光接收机。

    Switchable high pass configuration and an optical receiver with a switchable high pass configuration
    9.
    发明授权
    Switchable high pass configuration and an optical receiver with a switchable high pass configuration 有权
    可切换的高通配置和具有可切换高通配置的光接收器

    公开(公告)号：US07358799B2

    公开(公告)日：2008-04-15

    申请号：US11104707

    申请日：2005-04-13

    申请人： Ing. Karl Schrödinger

    发明人： Ing. Karl Schrödinger

    IPC分类号： H03K5/00

    CPC分类号： H03H11/0405 ,  H03F1/223 ,  H03F3/45304

    摘要： The invention relates to a switchable high-pass filter arrangement which has a lower limiting frequency determining the high-pass filter behavior. The arrangement includes a transistor circuit, which has at least one transistor in a common-gate or common-base connection; a capacitive component in series with the input of the transistor circuit; and a programmable device for setting the operating current of the transistor circuit. In this case, the limiting frequency of the high-pass filter arrangement is switchable by means of the programmable device for setting the operating current of the transistor circuit. This creates a switchable high-pass filter arrangement which does not have any changeover switches in the signal path, is suitable for radiofrequency applications and can be produced in a simple manner. The invention furthermore relates to an optical receiver having a high-pass filter arrangement of this type.

    摘要翻译： 本发明涉及一种可切换的高通滤波器装置，其具有确定高通滤波器行为的较低限制频率。 该装置包括晶体管电路，其在共栅或共基极连接中具有至少一个晶体管; 与晶体管电路的输入串联的电容分量; 以及用于设置晶体管电路的工作电流的可编程器件。 在这种情况下，高通滤波器装置的限制频率可通过用于设置晶体管电路的工作电流的可编程装置来切换。 这就产生了一种在信号路径中没有任何切换开关的可切换高通滤波器装置，适用于射频应用，并且可以以简单的方式产生。 本发明还涉及具有这种类型的高通滤波器装置的光接收机。