A MODEL OF COPLANAR WAVEGUIDE TYPE COUPLED EXPONENTIAL TRANSMISSION LINES ON SEMICONDUCTOR SUBSTRATES

Authors

  • Mohsen Kaddour

Keywords:

jmoe

Abstract

A new coupled exponential transmission lines (CETL) on semiconductor substrate are designed using an efficient simple method which is the transmission line theory combined with the CETL equivalent circuit. For this an analytical model is given to determine the Sijparameters of the CETL versus frequency. The simulated results are compared to those of the coupled uniform transmission lines (CUTL). This comparison reveals that the use of an exponential shape of the lines and a semiconducting substrate contribute to obtaining a bandwidth of such coupler wider than that of the conventional ones formed by uniform transmission lines and dielectric substrates.

References

[1] H. Hasegawa and S. Seki, “Analysis of interconnection delay on very high speed LSIVLSI chip using an MIS microstrip line model. IEEE Trans. Microwave Theory and Tech.
Vol.32, N°11, pp. 1721-1726, Dec. 1984.
[2] Kevin R. Nary et al. “A model for coplanar waveguide transmission lines structure on
semiconductor substrates. IEEE Trans. Microwave Theory and Tech. Vol.41, N°11, pp. 2034-
2037, Nov. 1993.
[3] M. Kaddour, A. Gharsallah, A. Gharbi and H. Baudrand, “Analysis of schielded coplanar
structures type transmission lines using iterative method: application to CPW and finline step
discontinuity. ‘International Journal of Modelling and simulation, Vol. 25, N°2, 2005.
[4] R.E. Collin, Foundation for microwave Engineering. New-York. Mc. Graw Hill, 1966.
[5] S. C. Burkhard and R. B. Wilcox, “Arbitrary pulse shape synthesis via nonuniform
transmission lines, IEEE Trans. Microwave Theory and Tech., Vol 38 pp. 1514-1518, Oct.
1990.
[6] R. N. Ghose, “Exponential transmission lines as resonator and transformers, IRE Trans.
Microwave Theory and Tech. , Vol. 5, pp. 213-217, July 1957.
[7] L. A. Hayden and V. K. Tripathi,”Nonuniform coupled microstrip transversal filters for
analogue signal processing, IEEE Trans. Microwave Theory and Tech. Vol. 39, pp. 47-53,
Jan. 1991.
[8] M. Le Roy, et al., « The continuously varying transmission-line technique, application to
filter design. IEEE Trans. Microwave Theory and Tech. Vol.47, N°9, pp. 1680-1687, Sept.
1999.
[9] N. Boulejfen, A. B. Kouki and F. M. Ghannouchi, “Frequency- and time-domain analysis
of nonuniform lossy coupled transmission lines with linear terminations. IEEE Trans.
Microwave Theory and Tech. Vol.48, N°3, pp. 367-379, March 2000.
[10] P. Bouchard and R. G. Gagné, “Transient analysis of lossy parabolic transmission lines
with nonlinear loads, IEEE Trans. Microwave Theory and Tech. Vol.43, , pp. 1330-1333,
June. 1995.
[11] M. J. Ahmed, “Impedance transformation for exponential, cosinesquared, and parabolic
tapered transmission lines, IEEE Trans. Microwave Theory and Tech. Vol.29, pp. 67-68, Jan.
1981
[12] C. P. Womack, “The use of exponential transmission lines in microwave components,
IRE Trans. Microwaves Theory Tech.., Vol. MTT 10, pp. 124-132, mars 1962.
[13] I. L. Hill and D. Mathews, “Transient analysis of systems with exponential lines, IEEE
Trans. Microwave Theory and Tech. Vol. MTT-25, pp. 777-783, Sep. 1977.
[14] C.W. Hsue, “Time domain scattering parameters of an exponential transmission lines,
IEEE Trans. Microwave Theory and Tech., Vol. 39, pp1891-1895, Nov. 1991.
[15] C. W. Hsue and C. D. Hechtman, “Transient analysis of nonuniform, high-pass
transmission lines, IEEE Trans. Microwave Theory and Tech., Vol. 38, pp. 1023-1030, Aug.
1990.
[16] C. W. Hsue and C. D. Hechtman, “Transient responses of an exponential transmission
line and its applications to high-speed backdriving in In-circuit test., IEEE Trans. Microwave
Theory and Tech. Vol.42, N°3, pp. 458-462, March 1994
[17] M. I. Sobhy and E. A. Hosni, “ The design of directional coupler using exponential lines
in ihomogeneous media, IEEE Trans. Microwave Theory and Tech. Vol.30, N°1, pp. 71-76,
Jan. 1982.
[18] S. V. Robertson, et al., “A 10-60-GHz micromachined directional coupler, IEEE Trans.
Microwave Theory and Tech. Vol.46, N°11, pp. 1845-1849, Nov. 1998.
[19] T. Dhaene, L. Martens and D. D. Zutter, “Transient simulation of arbitrary nonuniform
interconnection structures characterized by scattering parameters, IEEE Trans. Circuit system
I, Vol. 39, pp. 928-937, Nov. 1992.
[20] J. E. Schutt-Aine, “Transient analysis of nonuniform transmission lines, IEEE Trans.
Circuit system I, Vol. 39, pp. 378-385, May. 1992.
[21] Ke Lu, “An efficient method for analysis of arbitrary nonuniform transmission lines.
IEEE Trans. Microwave Theory and Tech., Vol.45, N°1, Jan. 1997.
[22] M. Kaddour, A. Gharsallah, A. Gharbi and H. Baudrand, “Analysis and design criteria
for travelling-wave MESFET.” Solid-State Electronics. Vol. 48, N°2, pp. 253-257, Feb. 2004
[23] M. Kaddour, A. Gharsallah, A. Gharbi and H. Baudrand, “An approach for determining
an equivalent circuit model for travelling-wave MESFET, Electromagnetics, Vol. 24 N°3, pp.
167-180. April 2004.

Downloads

Published

2005-08-01

How to Cite

Mohsen Kaddour. (2005). A MODEL OF COPLANAR WAVEGUIDE TYPE COUPLED EXPONENTIAL TRANSMISSION LINES ON SEMICONDUCTOR SUBSTRATES. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), 4(1), 43-54. Retrieved from http://www.jmoe.org/index.php/jmoe/article/view/169

Issue

Section

Regular Papers