US 9,814,130 B2
Reflected signal absorption in interconnect
Shaowu Huang, Steilacoom, WA (US); and John J. Abbott, Dupont, WA (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Apr. 26, 2016, as Appl. No. 15/138,880.
Application 15/138,880 is a division of application No. 14/303,396, filed on Jun. 12, 2014, granted, now 9,351,394.
Prior Publication US 2016/0242273 A1, Aug. 18, 2016
Int. Cl. H05K 1/11 (2006.01); H05K 1/02 (2006.01); H05K 3/40 (2006.01); H05K 3/46 (2006.01); H01R 12/71 (2011.01); H01R 13/6598 (2011.01)
CPC H05K 1/024 (2013.01) [H05K 1/0234 (2013.01); H05K 1/115 (2013.01); H05K 3/4038 (2013.01); H05K 3/4647 (2013.01); H01R 12/71 (2013.01); H01R 13/6598 (2013.01); H05K 1/116 (2013.01); H05K 2201/10621 (2013.01); Y10T 29/49156 (2015.01); Y10T 29/49167 (2015.01)] 14 Claims
OG exemplary drawing
 
1. A printed circuit board (PCB) assembly comprising:
a substrate; and
at least one interconnect formed in the substrate to route an electrical signal, wherein the interconnect includes a pair of electrically conductive lines disposed about an edge of the substrate, wherein each electrically conductive line includes a stub coupled with the line, wherein the stub forms an electric path that extends away from the electrically conductive line, wherein the electrical signal includes a desired transmission signal portion to travel via the electrically conductive line and a stub signal portion to travel through the stub, to form a reflected noise signal in response to a reflection by an end of the stub,
wherein at least a portion of the end of the stub is covered with an absorbing material to at least partially absorb the portion of the electrical signal that is reflected by the end of the stub, wherein the absorbing material has a dielectric loss tangent that remains substantially constant, for a frequency range of a frequency of the reflected portion of the electrical signal that is to be at least partially absorbed.