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Published 20 hours ago • verified publisher icon LibreRouterOrg

Properly design coupled transmission lines

Open spiccinini opened this issue 5 years ago • 2 comments

We are using coupled microstrips for the MegaBoard differential pairs (PCIe, USB, etc) and we are not taking in consideration the distance between the line and the groud plane at the sides.

Related to #54

spiccinini avatar Jan 13 '20 16:01 spiccinini

We have done some research and there is a constrain for the distance between differential pairs of 20mils. We will assume that the distance between the differential pair and other signals must be at least that amount. The ground planes in the same side of the differential pairs must be moved.

xcancerberox avatar Feb 26 '20 17:02 xcancerberox

The stitching vias are not need. Remove. Add vias side to side with the vias of side change.

xcancerberox avatar Feb 26 '20 18:02 xcancerberox