DocumentCode :
870241
Title :
Unit cell approach to full-wave analysis of meander delay line using FDTD periodic structure modeling method
Author :
Lee, Heeseok ; Kim, Joungho
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
Volume :
25
Issue :
2
fYear :
2002
fDate :
5/1/2002 12:00:00 AM
Firstpage :
215
Lastpage :
222
Abstract :
Unit cell modeling is performed to determine the effect of electromagnetic coupling on the propagation characteristics of a meander delay line, which is widely used in printed circuit boards and packages. Since the design of a delay line must guarantee several tens of picosecond timing margin in modern high-speed packages and board level interconnections, a penetrating understanding of the meander effect is essential. The propagation delay, the characteristic impedance, and the stop-band characteristic of the meander delay line have been carefully investigated based on a full-wave analysis using the finite-difference time-domain (FDTD) periodic structure modeling method. The periodicity of the meander line is utilized based on Floquet´s theorem, resulting in a reduction of the computational domain in the FDTD simulation and providing a unit cell model of the meander line. The unit cell modeling of the meander delay line shows the effect of electromagnetic coupling in meander line structure on the reduction of the propagation delay. Also, an analysis based on the unit cell modeling was confirmed by time-domain reflection/transmission measurements.
Keywords :
circuit CAD; delay lines; electromagnetic coupling; finite difference time-domain analysis; packaging; periodic structures; printed circuit design; timing; FDTD; Floquet´s theorem; board level interconnections; characteristic impedance; computational domain; electromagnetic coupling; full-wave analysis; high-speed packages; meander delay line; packages; periodic structure modeling method; printed circuit boards; propagation characteristics; propagation delay; stop-band characteristic; time-domain reflection/transmission measurements; timing margin; unit cell approach; unit cell modeling; Delay lines; Electromagnetic coupling; Electromagnetic modeling; Electromagnetic propagation; Finite difference methods; Packaging; Periodic structures; Printed circuits; Propagation delay; Time domain analysis;
fLanguage :
English
Journal_Title :
Advanced Packaging, IEEE Transactions on
Publisher :
ieee
ISSN :
1521-3323
Type :
jour
DOI :
10.1109/TADVP.2002.803272
Filename :
1049632
Link To Document :
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