Patent ID: 7760044

Claim:
A substrate for a semiconductor package, comprising: a dielectric substrate; a circuit pattern formed on a first surface of the dielectric substrate; and an electromagnetic band gap (EBG) pattern comprising: a plurality of zigzag unit structures formed on a second surface of the dielectric substrate, each zigzag unit structure comprising: a flat conductor electrically connected to the circuit pattern through a ground connection; and a plurality of zigzag-patterned conductors electrically connected to the flat conductor, wherein the second surface is formed on an opposite side of the dielectric substrate from the first surface, each flat conductor is electrically connected to a flat conductor of another one of the plurality of zigzag unit structures, and at least one of the plurality of zigzag-patterned conductors in each one of the plurality of zigzag unit structures is electrically connected to another one of the plurality of zigzag-patterned conductors.