DIFFERENTIAL MODE CROSSTALK SUPPRESSION APPARATUS FOR UNSHIELDED TWISTED PAIR

摘要

PURPOSE: A differential mode crosstalk suppression apparatus is provided to prevent crosstalk loss, attenuation and return loss between near ends at lines of plug and connection device. CONSTITUTION: An apparatus is characterized in that the spiral capacitance from among four pairs of capacitances existing at front and rear, and both sides of a PCB(P) is disposed in such a manner a rear line(13) is arranged at the rear of a front line(11), a rear line(15) is arranged at the rear of a front line(13), and a rear line(18) is arranged at the rear of a front line(16). Each line is installed in a spiral shaped curve, and each capacitance has a thickness of 0.2 to 0.5mm. The spacing between lines is 0.2 to 0.5mm.