Article | GigaHertz 2003. Proceedings from the Seventh Symposium | Some aspects of modeling of dense high speed TL interconnects for printed boards

Title:
Some aspects of modeling of dense high speed TL interconnects for printed boards
Author:
Andrei Koptioug: Project JEPP, Dept. of Information Technology and Media, Mid- Sweden University, Sweden Hjalmar Hesselbom: Project JEPP, Dept. of Information Technology and Media, Mid- Sweden University, Sweden
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Year:
2003
Conference:
GigaHertz 2003. Proceedings from the Seventh Symposium
Issue:
008
Article no.:
023
No. of pages:
4
Publication type:
Abstract and Fulltext
Published:
2003-11-06
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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In this paper we present some results of the ongoing research aimed at studying the limitations attached to the increase in transmission line (TL) density for the high speed interconnects at the board; multi-chip module and on-chip integration levels. For any interconnect solution the important quality in the frequency band of interest is the signal to noise ratio obtainable; where noise could be due to additional amplification required; TL itself and any cross talk signal picked up by the line.

First part of the paper deals with modeling the coupling between two TL sections in the attempt to formulate simple guidelines on how to chose the TL dimensions and adjacent trace separation to maintain reasonably low trace coupling. Second part of the paper deals with the influence of TL cross- sectional parameter upon the high frequency losses. Area efficiency parameter is introduced to allow the measure of the tradeoff between obtaining smaller loss (with wider central strips) and smaller cross talk in order to obtain the best possible throughput per board cross section at any bit error rate.

GigaHertz 2003. Proceedings from the Seventh Symposium

Author:
Andrei Koptioug, Hjalmar Hesselbom
Title:
Some aspects of modeling of dense high speed TL interconnects for printed boards
References:

1. “RF and Microwave Coupled Circuits”; R. Mongia; I. Bahl; P. Bhartia; Artech House; 1999; chapter 3.4.2;


2. “Transmission Line Design Handbook”; B. C. Wadell; Artech House; 1991; chapter 4.6.5.


3. “Microwave Circuit Modeling Using Electromagnetic Field Simulation”; D.G. Swanson Jr.; J. R. Hoefer; Artech House; 2003.


4. “CST Microwave Studio”; Computer Simulation Technologies; http://www.cst.de/index.htm?page=/products/mws/mws.htm


5. HFSS- High Frequency Simulation Software by Ansoft ; http://www.ansoft.com/products/hf/hfss/


6. “Lateral skin Effect in a Flat Conductor”; V. Belevich; http://www.cvni.net/abc/rip2/r9/r0901.html


7. ADS- Advanced Design System; Agilent; http://eesof.tm.agilent.com/products/adsoview.html

GigaHertz 2003. Proceedings from the Seventh Symposium

Author:
Andrei Koptioug, Hjalmar Hesselbom
Title:
Some aspects of modeling of dense high speed TL interconnects for printed boards
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