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Slide Presentations for ECE 329, Introduction to Electromagnetic Fields, to supplement “Elements of Engineering Electrom

Slide Presentations for ECE 329, Introduction to Electromagnetic Fields, to supplement “Elements of Engineering Electromagnetics, Sixth Edition”. by Nannapaneni Narayana Rao Edward C. Jordan Professor of Electrical and Computer Engineering

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Slide Presentations for ECE 329, Introduction to Electromagnetic Fields, to supplement “Elements of Engineering Electrom

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  1. Slide Presentations for ECE 329,Introduction to Electromagnetic Fields,to supplement “Elements of Engineering Electromagnetics, Sixth Edition” by Nannapaneni Narayana Rao Edward C. Jordan Professor of Electrical and Computer Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois, USA Distinguished Amrita Professor of Engineering Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, India

  2. 6.1Transmission Line

  3. Parallel-Plate Line Neglect fringing (d << w).

  4. Consider the circuit

  5. Then Transmission Line Equations

  6. Transverse Electromagnetic (TEM) Waves

  7. Distributed Equivalent Circuit Assumes perfect conductors but lossy dielectric.

  8. Transmission-Line Equations L = Inductance per unit length (H/m) C = Capacitance per unit length (F/m) G = Conductance per unit length (S/m)

  9. In general, conductors are also lossy. Then, the waves are not exactly TEM waves. R = Resistance per unit length (/m)

  10. Lossless Line (Perfect Conductors, Perfect Dielectric) Combining, we obtain Wave Equation

  11. Solution:

  12. Thus

  13. Parallel-Plate Line

  14. Coaxial Cable

  15. Parallel-Wire Line

  16. Parallel-Strip Line (d/w 1) imbedded in a homogeneous medium

  17. Microstrip Line

  18. Shielded Strip Line

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