Abstract: A balanced-to-unbalanced (balun) transformer may include two metal layers on a substrate, a first winding following a first winding path, and a second winding following a second winding path, where each winding is formed in one or more of the two metal layers. The winding paths may include winding segments each disposed around a central axis of the balun transformer, where connectors join adjacent winding segments such that the winding paths are continuous between ends of the windings. The second winding path may be interwoven with, but independent from, the first winding path to form a resultant pattern that is substantially symmetrical. The second winding may include a number, n, of sub-windings, where n>1 such that a resultant number of winding segments of the second winding is greater than a resultant number of winding segments of the first winding by a factor of n.

Abstract: A balanced-to-unbalanced (balun) transformer may include two metal layers on a substrate, a first winding following a first winding path, and a second winding following a second winding path, where each winding is formed in one or more of the two metal layers. The winding paths may include winding segments each disposed around a central axis of the balun transformer, where connectors join adjacent winding segments such that the winding paths are continuous between ends of the windings. The second winding path may be interwoven with, but independent from, the first winding path to form a resultant pattern that is substantially symmetrical. The second winding may include a number, n, of sub-windings, where n>1 such that a resultant number of winding segments of the second winding is greater than a resultant number of winding segments of the first winding by a factor of n.