DC-COUPLED LASER DRIVER WITH AC-COUPLED TERMINATION ELEMENT
    32.
    发明公开
    DC-COUPLED LASER DRIVER WITH AC-COUPLED TERMINATION ELEMENT 审中-公开
    具有交流耦合终端元件的直流耦合激光驱动器

    公开(公告)号:EP3241260A1

    公开(公告)日:2017-11-08

    申请号:EP15875928.2

    申请日:2015-12-02

    IPC分类号: H01S3/10

    摘要: An optical signal module including a driver and an optical signal module. The driver includes a differential pair configured to receive and process an input signal to create a drive signal. A modulation current source provides a modulation current to the differential pair. One or more termination resistors connected to the differential pair for impedance matching. A first switch, responsive to a first control signal, maintains charge on a charge storage device. The optical signal module includes an optical signal generator arranged between a supply voltage node and a bias current node. The optical signal generator receives the drive signal and generates an optical signal representing the input signal. A second switch is between a supply voltage node the bias current node. The second switch, responsive to second control signal, selectively establishes a short between the supply voltage node the bias current node.

    TUNED SEMICONDUCTOR AMPLIFIER
    40.
    发明公开

    公开(公告)号:EP3742607A1

    公开(公告)日:2020-11-25

    申请号:EP20178902.1

    申请日:2016-09-26

    摘要: Methods and structures for improving the performance of integrated semiconductor transistors operating at high frequency and/or high power are described. Two capacitors may be connected to an input of a semiconductor transistor and tuned to suppress second-harmonic generation and to transform and match the input impedance of the device. A two-stage tuning procedure is described. The transistor may comprise gallium nitride and may be configured as a power transistor capable of handling up to 1000 W of power. A tuned transistor may operate at frequencies up to 6 GHz with a peak drain efficiency greater than 60%.