MAGNETIC TRANSFORMER HAVING INCREASED BANDWIDTH FOR HIGH SPEED DATA COMMUNICATIONS

An isolation transformer includes a transformer core (300). First and second through-bores (340, 342) extend through the transformer core from a first surface to a second surface. Each through-bore has an elongated profile with at least a portion of the elongated profile providing a respective flat wining surface. The flat winding surfaces are spaced apart by a central portion of the transformer core. The transformer is wound with a six-wire cable having a central non-conductive core. First, second, third, fourth, fifth and sixth conductive wires are positioned around and adjacent to the central non- conductive core in a substantially equally spaced angular relationship. The second conductive wire is positioned between the first conductive wire and the third conductive wire; and the fifth conductive is positioned between the fourth conductive wire and the sixth conductive wire. The conductive wires are twisted about the central non- conductive core at a selected twist density. (Figure 3)