Patent ID: 8354601
Filing Date: 2013-01-15
Classification: H05K,Y10T

Abstract:
1. A structure for a coaxial signal via routing in printed circuit board for improving signal integrity, comprising: a structure formed of more than on structures including a first structure and a second structure wherein said second structure is located on top of said first structure and said first and second structures each includes a multi-layered printed circuit board including at least one coaxial via plated; and a ground trench formed around signal via that extends for an entire length of the coaxial signal via and down to a bottom of a ground reference of the layer below of said first structure and UP to the plane on said second structure where the trace enters the coaxial signal via and attaches to the signal via to permit the signal via to extend downward from a trace plane layer to attach to the signal via on a layer below.