Magnetic transformer having increased bandwidth for high speed data communications

An isolation transformer comprising:

• a transformer core having a first surface and a second surface;
• a first through-bore extending through the transformer core from the first surface to the second surface, the first through-bore having an elongated profile with at least a portion of the elongated profile providing a first flat winding surface;
• a second through-bore extending through the transformer core from the first surface to the second surface, the second through-bore having an elongated profile with at least a portion of the elongated profile providing a second flat winding surface, the second flat winding surface spaced apart from the first flat winding surface by a central portion of the transformer core;
• a first three-wire cable comprising a first conductive wire, a second conductive wire, and a third conductive wire, the second conductive wire positioned between the first conductive wire and the third conductive wire, the first, second and third conductive wires twisted together, the first three-wire cable threaded through the first through-bore and around the central portion of the transformer core;
• and
• a second three-wire cable comprising a fourth conductive wire, a fifth conductive wire, and a sixth conductive wire, the fifth conductive wire positioned between the fourth conductive wire and the sixth conductive wire, the fourth, fifth and sixth conductive wires twisted together, the second three-wire cable threaded through the first through-bore and the second through-bore and around the central portion of the transformer core, the second three-wire cable interleaved with the first three-wire cable such that one turn of the first three-wire cable is positioned between adjacent turns of the second three-wire cable, wherein
• the first and third conductive wires of the first three-wire cable are connected in parallel to form a first primary winding of the isolation transformer, and the fourth and sixth conductive wires of the second three-wire cable are connected in parallel to form a second primary winding of the isolation transformer, the first and second primary windings connected in series to form a center-tapped primary winding;
• and
• the second conductive wire of the first three-wire cable forms a first secondary winding of the isolation transformer, and the fifth conductive wire of the second three-wire cable forms a second secondary winding of the isolation transformer, the first and second secondary windings connected in series to form a center-tapped secondary winding.