volume | PIER Journals

2009-12-01

The Effect of Loss-Tangent on Laddering Behavior in Delay Lines

Ali Kabiri,

Dr. Ali Kabiri

Electrical and Computer Engineering

University of Waterloo

Canada

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Mohammed M. Bait-Suwailam,

Dr. Mohammed M. Bait-Suwailam

Department of Electrical and Computer Engineering

Sultan Qaboos University

Oman

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Mohammad H. Kermani,

Dr. Mohammad H. Kermani

Electrical and Computer Engineering

University of Maryland

USA

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Omar M. Ramahi

Dr. Omar M. Ramahi

Electrical and Computer Engineering Department

University of Waterloo

Canada

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Progress In Electromagnetics Research Letters, Vol. 12, 161-170, 2009

doi:10.2528/PIERL09102503

Abstract

Delay lines come in varying topologies such as the simple meander line or the spiral delay lines. The major characteristic of these delay lines is their introduction of a laddering behavior at the output. Such laddering behavior can render the predictability of the delay very difficult unless time-consuming full-wave simulation is used. In previous works, delay lines were considered with minimal attention to the effect of the loss tangent. In this paper we have studied the effect of loss- tangent on the laddering behavior in delay lines and found that by considering the loss-tangent of the dielectric of the host medium, the laddering behavior is no longer present, thus eliminating the possibility of over- or under shooting logic levels at the output.

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Ali Kabiri, Mohammed M. Bait-Suwailam, Mohammad H. Kermani, and Omar M. Ramahi, "The Effect of Loss-Tangent on Laddering Behavior in Delay Lines," Progress In Electromagnetics Research Letters, Vol. 12, 161-170, 2009.
doi:10.2528/PIERL09102503

References

1. Wu, R. and F. Chao, "Laddering wave in serpentine delay line," IEEE Trans. on Components, Packaging, and Manufacturing Technology --- Part B, Vol. 18, No. 4, Nov. 1995.

2. Wu, R. and F. Chao, "Flat spiral delay line design with minimum crosstalk penalty," IEEE Trans. on Components, Packaging, and Manufacturing Technology | Part B, Vol. 19, No. 2, May 1996.
doi:10.1109/22.868994

3. Rubin, B. J. and B. Singh, "Study of meander line delay in circuit boards," IEEE Trans. on Microwave Theory and Techniques, Vol. 48, No. 9, Sep. 2000.

4. Ramahi, O. M., "Analysis of conventional and novel delay lines: A numerical study," Journal of Applied Computational Electromagnetic Society, Vol. 18, No. 3, 181-190, Nov. 2003.

5. CADENCE IC4.4.6, Cadence Design Systems, .

6. SONNET Version 7.0, Sonnet Software, Inc., .

7. Collin, R. E., Foundations for Microwave Engineering, The IEEE Press Series on Electromagnetic Wave Theory, 2001.

8. Microwave Studio, CST of America, , Inc..