Patent ID: 8269575

Claim:
A semiconductor device, comprising: a substrate; and a balun formed over the substrate, the balun including, (a) a first conductive trace wound in a coil to exhibit inductive properties comprising a first end coupled to a first terminal of the semiconductor device and second end coupled to a second terminal of the semiconductor device, (b) a first capacitor coupled between the first and second ends of the first conductive trace, (c) a second conductive trace wound in a coil to exhibit inductive properties comprising a first end coupled to a third terminal of the semiconductor device and second end coupled to a fourth terminal of the semiconductor device, the first conductive trace being formed completely within the second conductive trace and separated from the second conductive trace by a distance to reduce inductive and capacitive coupling, and (d) a second capacitor coupled between the first and second ends of the second conductive trace.