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    • 1. 发明授权
    • Optical transmission module
    • 光传输模块
    • US07035302B2
    • 2006-04-25
    • US10384509
    • 2003-03-06
    • Tomokazu TanakaCleitus AntonyHiroo MatsueHideki MurakawaTadashi Hatano
    • Tomokazu TanakaCleitus AntonyHiroo MatsueHideki MurakawaTadashi Hatano
    • H01S3/00
    • H01S5/042H01S5/0427
    • The present invention provides an optical transmission module having a laser diode that generates laser beams and a differential type current switch provided with a first switch and a second switch in order to supply a modulating current to the laser diode. A terminal of the laser diode and the first switch are connected in series through a first transmission line and a first capacitor, the other terminal of the laser diode and the second switch are connected in series through a second transmission line and a second capacitor. The current driven by the second switch is terminated by a resistor connected to the first switch and the current driven by the first switch is terminated by a resistor connected to the second switch. Thus, the laser diode is modulated bidirectionally.
    • 本发明提供了一种具有产生激光束的激光二极管和设置有第一开关和第二开关的差分型电流开关以便向激光二极管提供调制电流的光传输模块。 激光二极管和第一开关的端子通过第一传输线和第一电容器串联连接,激光二极管的另一端和第二开关通过第二传输线和第二电容器串联连接。 由第二开关驱动的电流被连接到第一开关的电阻器终止,并且由第一开关驱动的电流由连接到第二开关的电阻端接。 因此,激光二极管被双向调制。
    • 6. 发明申请
    • Flexible printed circuit board
    • 柔性印刷电路板
    • US20070102830A1
    • 2007-05-10
    • US11586209
    • 2006-10-24
    • Akira MutoTomokazu Tanaka
    • Akira MutoTomokazu Tanaka
    • H01L23/52
    • H05K1/118H01R12/79H05K1/0219H05K1/0237H05K3/42H05K2201/093H05K2201/09381H05K2201/09409H05K2201/09481H05K2201/09618H05K2201/09727Y10T29/4913Y10T29/49155
    • A flexible printed circuit board has an insulation layer, a first signal wiring layer including a microstrip line, a second signal wiring layer including a signal connection terminal for allowing the microstrip line to connect the exterior connector electrically, and a ground conductive section having a ground connection terminal for connecting the exterior connector. The microstrip line and the signal connection terminal are connected to each other by a wiring via hole. The wiring via hole passes through the insulation layer, the first signal wiring layer, and the second signal wiring layer. The microstrip line has a taper section which gradually enlarges a width of the microstrip line toward the wiring via hole in the vicinity of the wiring via hole. The ground conductive section that corresponds to the microstrip line has a taper section with a shape matching the taper section of the microstrip line.
    • 柔性印刷电路板具有绝缘层,包括微带线的第一信号布线层,包括用于允许微带线将外部连接器电连接的信号连接端子的第二信号布线层和具有地面的接地导电部分 用于连接外部连接器的连接端子。 微带线和信号连接端子通过布线孔相互连接。 布线通孔穿过绝缘层,第一信号布线层和第二信号布线层。 微带线具有锥形部,其在布线通孔附近逐渐扩大微带线的宽度朝向布线通孔。 对应于微带线的接地导电部分具有与微带线的锥形部分匹配的形状的锥形部分。
    • 8. 发明授权
    • Driver amplifier circuit and communication system
    • 驱动放大器电路和通讯系统
    • US08558621B2
    • 2013-10-15
    • US13067935
    • 2011-07-08
    • Hidekazu KikuchiTomokazu TanakaKunio Gosho
    • Hidekazu KikuchiTomokazu TanakaKunio Gosho
    • H03F1/00H03F3/04
    • H04L25/0282
    • Disclosed herein is a driver amplifier circuit, including: a first current source transistor of a first conductivity type, and a second current source transistor of the first conductivity type, control voltages being supplied to gates of the first current source transistor and the second current source transistor, respectively; a first switching transistor of the first conductivity type, and a second switching transistor of the first conductivity type; a third switching transistor of a second conductivity type, and a fourth switching transistor of the second conductivity type; first, second, third, and fourth resistor elements; and a first output node and a second output node.
    • 这里公开了一种驱动放大器电路,包括:第一导电类型的第一电流源晶体管和第一导电类型的第二电流源晶体管,控制电压被提供给第一电流源晶体管和第二电流源的栅极 晶体管; 第一导电类型的第一开关晶体管和第一导电类型的第二开关晶体管; 第二导电类型的第三开关晶体管和第二导电类型的第四开关晶体管; 第一,第二,第三和第四电阻器元件; 以及第一输出节点和第二输出节点。