Range-switching optical receiver with high sensitivity and wide dynamic range
    11.
    发明授权
    Range-switching optical receiver with high sensitivity and wide dynamic range 失效
    量程切换光接收机,灵敏度高,动态范围宽

    公开(公告)号:US06303922B1

    公开(公告)日:2001-10-16

    申请号:US09120388

    申请日:1998-07-21

    申请人: Bryon L. Kasper

    发明人: Bryon L. Kasper

    IPC分类号: H01J4014

    摘要: At least two innovations are used to overcome the limitations of conventional transimpedance or high impedance optical receiver front end amplifiers. The innovations are a) multiple stage equalization of a high-feedback resistor, low-gain transimpedance amplifier to obtain high sensitivity, and b) range switching of feedback resistors and equalization capacitors to obtain high overload. With these approaches, it is possible to design an optical receiver operating at the intrinsic limits of available device technology.

    摘要翻译: 使用至少两个创新来克服常规跨阻抗或高阻抗光接收机前端放大器的限制。 创新是a)高反馈电阻,低增益互阻抗放大器的多级均衡以获得高灵敏度,以及b)反馈电阻和均衡电容的范围切换以获得高过载。 利用这些方法,可以设计在可用设备技术的固有极限下操作的光接收机。

    Lightwave receiver having differential input
    12.
    发明授权
    Lightwave receiver having differential input 失效
    具有差分输入的光波接收机

    公开(公告)号:US5013903A

    公开(公告)日:1991-05-07

    申请号:US485195

    申请日:1990-02-26

    申请人: Bryon L. Kasper

    发明人: Bryon L. Kasper

    IPC分类号: H04B10/158

    CPC分类号: H04B10/6973

    摘要: A lightwave receiver, suitable for CATV applications, includes an input photodiode that is capacitively coupled to the differential inputs of a balanced amplifier. Biasing of the photodiode may be achieved by connecting the photodiode in series between a pair of resistors, with the differential inputs being taken from either side of the photodiode. This arrangement avoids the use of a transformer, which exhibits considerable high frequency loss, thereby avoiding the bandwidth limitation inherent with a transformer.

    摘要翻译: 适用于CATV应用的光波接收器包括电容耦合到平衡放大器的差分输入的输入光电二极管。 可以通过将光电二极管串联连接在一对电阻器之间来实现光电二极管的偏置,其中差分输入从光电二极管的任一侧获取。 这种布置避免了使用变压器,其具有相当高的频率损失,从而避免了变压器固有的带宽限制。