Defective ground plane structure for broadband crosstalk reduction in PCBs

With the advances in integrated circuit (IC) technologies, printed circuit boards (PCBs) with a large number of interconnects are commonly used. To accommodate a large number of line traces in a small area, multi-layer PCBs with tens of layers are widely adopted despite the high cost of fabrication....

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Main Authors: Henridass, A., Sindhadevi, M., Karthik, N., Alsath, M. G. N., Kumar, R. R., Malathi, K.
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Couplings
Crosstalk
Defective Ground Structures (DGS)
Electromagnetic Band Gap structures (EBG)
FEXT
Microwave filters
NEXT
PCB size
PCB trace density
Periodic structures
Printed circuits
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creator Henridass, A.
Sindhadevi, M.
Karthik, N.
Alsath, M. G. N.
Kumar, R. R.
Malathi, K.
description With the advances in integrated circuit (IC) technologies, printed circuit boards (PCBs) with a large number of interconnects are commonly used. To accommodate a large number of line traces in a small area, multi-layer PCBs with tens of layers are widely adopted despite the high cost of fabrication. The density of signal transmission lines on a layer is mainly limited by the crosstalk levels between adjacent line traces. The conventional design guide states that the clearance of the line traces be kept larger than three times the width of line traces. Crosstalk between two traces can be calculated and analyzed using multiconductor transmission line equations. As per IPC2221, the minimum spacing between two traces is 1.25mm. This paper aims to bring down the minimum spacing to a level of 0.5mm by means of crosstalk reduction using defective ground plane structures.
doi_str_mv 10.1109/ICCCA.2012.6179208
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Bandwidth
Couplings
Crosstalk
Defective Ground Structures (DGS)
Electromagnetic Band Gap structures (EBG)
FEXT
Microwave filters
NEXT
PCB size
PCB trace density
Periodic structures
Printed circuits
title Defective ground plane structure for broadband crosstalk reduction in PCBs
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