| 摘要 |
PURPOSE:To eliminate pulse width distortion by connecting a parallel circuit composed of a resistor and a capacitor between each of a couple of output terminals of a differential type drive circuit and two transmission lines constituting a balanced type transmission line respectively. CONSTITUTION:The differential driving circuits 7, 8 are connected respectively to other end of resistors 11, 12 in pairs and other ends of resistors 13, 14 in pairs, drive a pulse signal respectively to send the pulse signal to the balanced type transmission line 120 via parallel connection circuits 19, 29 composed of two resistors and capacitors respectively. Thus, the pulse signal in the propagation through the balanced type transmission line 120 receives a transmission loss in its high frequency component and the leading edge and trailing edge of the waveform are unsharpened, but since the high frequency component of the pulse signal by the action of capacitors 15, 16 is sent excessively, the waveform of the pulse signal reaching the termination resistors 3, 4 and the differential type reception circuits 5, 6 is corrected sufficiently. Thus, the distortion in the pulse width is eliminated. |
