Patent ID: 7042325

Claim:
A planar transformer arrangement to provide isolation between an input signal and an output signal, the planar transformer arrangement comprising: a planar dielectric medium having a first side and a second side; a meandering primary winding arranged on the first side of the planar medium, a current flow being induced within the primary winding in accordance with the input signal; a meandering secondary winding arranged on the second side of the planar medium, the primary and secondary windings forming a planar transformer, wherein a voltage is induced across the secondary winding in accordance with the current flow within the primary winding; and a mode elimination arrangement configured to produce a compensated voltage by compensating for a common mode interference on the voltage induced across the secondary winding, the mode elimination arrangement being further configured to generate the output signal in accordance with the compensated voltage; and wherein the planar medium provides a voltage isolation between the primary and secondary windings.