Abstract: A transmission unit with reduced crosstalk signal includes a first conductor group having at least one first conductor surrounded by a first sheath and at least one second conductor surrounded by a second sheath. The first and the second conductor are axially arranged corresponding to one another. The first sheath has a dielectric coefficient higher than that of the second sheath, so that a difference in dielectric property exists between the first and the second conductor to enable reduction of crosstalk occurred during high-speed signal transmission over the transmission unit.

Abstract: A signal transmission cable with insulation piercing terminals includes a flat cable having a plurality of conductors, and a plurality of conductive terminals electrically connected to an end of the flat cable. The conductors respectively have a sheathed section, and a bare section located at an end of the sheathed section and having a length ranged between 0.01 mm and 4 mm. The sheathed sections are respectively surrounded by a first sheath before being together surrounded by a second sheath. The conductive terminals respectively include a spring contact and a plurality of piercing sections formed at an end of the spring contact for electrically connecting to the conductors of the flat cable. The bare sections with a defined length can reduce the stub effect on a signal transmitted via the signal transmission cable to achieve better impedance matching and reduced crosstalk interference during digital signal transmission.

Abstract: A transmission unit with reduced crosstalk signal includes a first conductor group having at least one first conductor surrounded by a first sheath and at least one second conductor surrounded by a second sheath. The first and the second conductor are axially arranged corresponding to one another. The first sheath has a dielectric coefficient higher than that of the second sheath, so that a difference in dielectric property exists between the first and the second conductor to enable reduction of crosstalk occurred during high-speed signal transmission over the transmission unit.