Patent ID: 8049320

Claim:
A package-on-package (POP) package precursor, comprising: an electronic substrate comprising a plurality of electrically conductive layers separated by a plurality of dielectric layers, said electronic substrate providing a top surface; a first portion of said top surface having an IC die attached thereto; a second portion of said top surface having a plurality of first attach pads positioned on opposing sides of said IC die having exposed electrically conductive surfaces for electrically coupling to at least a first electronic device on top of said IC die, and at least a third portion of said top surface positioned laterally with respect to said first and said second portion of said top surface, said third portion including a plurality of second attach pads having exposed electrically conductive surfaces for electrically coupling to at least a second electronic device, wherein at least one of said plurality of electrically conductive layers comprises a coupling trace that electrically couples at least one of said plurality of second attach pads to at least one of said IC die and at least one of said plurality of first attach pads and wherein a first and a second of said plurality of electrically conductive layers are arranged to provide a coaxial shield region for at least a portion of a length of said coupling trace.