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Crosstalk Reduction Using Stitch Vias on Printed Circuit Boards

IP.com Disclosure Number: IPCOM000101584D
Publication Date: 2005-Mar-16
Document File: 2 page(s) / 243K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method that uses stitch vias to reduce the crosstalk noise around differential signal pins on printed circuit boards (PCB).

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Crosstalk Reduction Using Stitch Vias on Printed Circuit Boards

Disclosed is a method that uses stitch vias to reduce the crosstalk noise around differential signal pins on printed circuit boards (PCB).

Background

Currently, to reduce crosstalk noise in the differential signal layout, adjacent signal pins in the interconnect are assigned as ground pins (see Figure 1).

General Description

The disclosed method reduces crosstalk noise by adding stitch vias (see Figure 2) in between two adjacent differential pair contacts in a PCB. Figure 3 shows the disclosed method’s stitched vias attached to the ground layers in the PCB.

Advantages

The disclosed method reduces signal crosstalk by sending unwanted signals to the ground plane on the PCB.

Fig. 1

Fig. 2

Fig. 3

Disclosed anonymously