Patent ID: 6873302

Claim:
A signal receiving apparatus, comprising: a core having six substantially rectangular sides and formed from a non-ferrous, non-conductive material; three winding sets formed from three corresponding wire sets that are wound around the core, the three winding sets positioned orthogonal to each other and separated at least in part from each other by one or more spacers, each of the three corresponding wire sets comprising at least one wire; wherein each one of the three winding sets comprises two or more substantially rectangular windings electrically coupled to each other and substantially defining a corresponding two or more substantially rectangular planes, the corresponding two or more substantially rectangular planes substantially parallel to each other; two or more electrostatic shields separating the three winding sets from each other; and wherein, for at least two of the three winding sets, the substantially rectangular planes defined by the substantially rectangular windings are equal in size, and the respective numbers of windings for each of the at least two of the three winding sets are substantially the same.