Patent ID: 9659850
Date: 2017-05-23
CPC Classifications: H01L,H05K

Claim:
1. A package substrate comprising: a first dielectric layer; a first set of metal layers in the dielectric layer; a first via in the dielectric layer, the first via coupled to the first set of metal layers, wherein the first via and the first set of metal layers are configured to provide a first electrical path for a ground signal; a second set of metal layers in the dielectric layer; and a second via in the first dielectric layer, wherein a combination of the second via and at least a portion of the first set of metal layers is configured as a discrete coaxial connection in the package substrate, wherein the second via is configured to provide a second electrical path for an input/output (I/O) signal, and the second via traverses the first set of metal layers with a circumferential edge of the first set of metal layers adjacent to and surrounding the second via, and the second via traverses the second set of metal layers with a circumferential edge of the second set of metal layers adjacent to and surrounding the second via, wherein the circumferential edge of the first set of metal layers adjacent to and surrounding the second via is at least a first spacing away from the second via, and the circumferential edge of the second set of metal layers adjacent to and surrounding the second via is at least a second spacing away from the second via, the second spacing is different in dimension than the first spacing.