volume | PIER Journals

2009-09-13

EM Field Coupling to Non-Uniform Microstrip Lines Using Coupled Multi-Conductor Strips Model

Hamid Khodabakhshi,

Dr. Hamid Khodabakhshi

College of Electrical Engineering

Islamic Azad University - Shahre rey branch

Iran

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Ahmad Cheldavi

Dr. Ahmad Cheldavi

Department of Electrical Engineering

Iran University of Science and Technology

Iran

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Progress In Electromagnetics Research B, Vol. 17, 309-326, 2009

doi:10.2528/PIERB09080202 | Google Scholar

Abstract

A model for the two-dimensional analysis of microstrip lines, named Rigorously Coupled Multi-conductor Strip (RCMS) is introduced. In this model, the width of the strip of a microstrip line is subdivided into a large number of rigorously coupled narrow strips. So, a microstrip line can be considered as a coupled multi-conductor transmission line. Determination of the capacitance and inductance matrices of the model is introduced, also. The voltages and currents induced by electromagnetic fields for the coupled multi-condutor strips problem can be obtained using Bernardi's method. The effect of an external EM wave on a microstrip line with non-uniformity in its width is computed by adding the circuit model of transverse discontinuity (narrow slit) to the RCMS model. Finally, the validity and efficiency of the introduced method is investigated using previous work and full wave EM-simulation software.

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Hamid Khodabakhshi, and Ahmad Cheldavi, "EM Field Coupling to Non-Uniform Microstrip Lines Using Coupled Multi-Conductor Strips Model," Progress In Electromagnetics Research B, Vol. 17, 309-326, 2009.
doi:10.2528/PIERB09080202

References

1. Collin, R. E., Foundations of Microwave Engineering, McGraw-Hill, 1992.

2. Pozar, D. M., Microwave Engineering, Addison Wesley, 1990.

3. Laroussi, R. and G. I. Costache, "Finite-element method applied to EMC problems [PCB environment]," IEEE Trans. Electromagnetic Compatibility, 178-184, May 1993.
doi:10.1109/15.229423 Google Scholar

4. Dhaene, T., L. Martens, and D. De Zutter, "Transient simulation of arbitrary nonuniform interconnection structures characterized by scattering parameters," IEEE Trans. Circuits Systems-I: Fundamental Theory and Appl., 928-937, Nov. 1992. Google Scholar

5. Paul, C. R., Analysis of Multi-conductor Transmission Lines, John Wiley and Sons Inc., 1994.

6. Homentcovschi, D. and R. Oprea, "Analytically determined quasistatic parameters of shielded or open multi-conductor microstrip lines," IEEE Trans. Microwave Theory Tech., 18-24, Jan. 1998.
doi:10.1109/22.654918 Google Scholar

7. Cheldavi, A. and A. M. Khalaj, "A new two dimensional analysis of microstrip lines using rigorously coupled multiconductor strips model," Journal of Electromagnetic Waves and Applications, Vol. 18, No. 6, 809-825, 2004.
doi:10.1163/156939304323105880 Google Scholar

8. Lei, G. T., G. W. Pan, and B. K. Gilbert, "Examination, clarification, and simplification of modal decoupling method for multiconductor transmission lines," IEEE Trans. Microwave Theory Tech., Vol. 43, No. 9, 2090-2099, Sep. 1995.
doi:10.1109/22.414545 Google Scholar

9. Bernardi, P. and R. Cicchetti, "Response of a planar microstrip line excited by an external electromagnetic field," IEEE Trans. Electromagnetic Compatibility, Vol. 32, No. 2, 98-105, Jan. 1990.
doi:10.1109/15.52405 Google Scholar

10. Hoefer, W. J. R., "Equivalent series inductivity of a narrow transverse slit in microstrip," IEEE Trans. Microwave Theory Tech., Vol. 25, No. 10, 822-824, Oct. 1977.
doi:10.1109/TMTT.1977.1129220 Google Scholar

11. Khodabakhshi, H. and A. Cheldavi, "EM field coupling to microstrip lines using rigorously coupled multi-conductors strips," APEMC 2008, 874-877, Singapore, May 2008.