Book contents
- Transmission Lines
- Transmission Lines
- Copyright page
- Epigraph
- Contents
- Preface to the First Edition
- Preface to the Second Edition
- 1Pulses on Transmission Lines
- 2Sine Waves and Networks
- 3Coupled Transmission Lines and Circuits
- 4Transmission Lines and Electromagnetism
- 5Guided Electromagnetic Waves
- 6Attenuation in Transmission Lines
- 7Plane Waves and Transmission Lines
- 8The Role of Photons in Transmission Line Circuits
- Index
- References
1 - Pulses on Transmission Lines
Published online by Cambridge University Press: 05 June 2026
Book contents
- Transmission Lines
- Transmission Lines
- Copyright page
- Epigraph
- Contents
- Preface to the First Edition
- Preface to the Second Edition
- 1Pulses on Transmission Lines
- 2Sine Waves and Networks
- 3Coupled Transmission Lines and Circuits
- 4Transmission Lines and Electromagnetism
- 5Guided Electromagnetic Waves
- 6Attenuation in Transmission Lines
- 7Plane Waves and Transmission Lines
- 8The Role of Photons in Transmission Line Circuits
- Index
- References
Summary
This chapter introduces the theory of lossless transmission lines based on an equivalent circuit. The three key parameters, the velocity of propagation, the characteristic impedance and the reflection coefficient are shown to be linked to the circuit parameters. Using these concepts, there are examples of step waves reflecting from resistances at the end of transmission lines. In some examples, there are also reflections from the source resistance as well. These multiple reflections are analysed to show that they reach a steady state predicted by circuit theory. Pulses on transmission lines are described by taking a positive step wave and then adding a delayed negative step wave. The energy in a pulse is shown to consist of an equal amount of electric and magnetic energy. The chapter ends with examples of reflections from both a capacitor and an inductor.
Information
- Type
- Chapter
- Information
- Transmission LinesEquivalent Circuits, Electromagnetic Theory, and Photons, pp. 1 - 36Publisher: Cambridge University PressPrint publication year: 2026
References
1.12 Further Reading
Ramo, S., Whinnery, J. R. and Van Duzer, T. Fields and Waves in Communication Electronics, Third edition, New York, Wiley, 1993. Chapter 5, sections 5.4 to 5.7.Google Scholar
Krauss, J. D Electromagnetics, Fourth edition, New York, McGraw-Hill, 1992. Chapter 12, sections 10.1 and 10.2.Google Scholar
Cheng, D. K Field and Wave Electromagnetics, Second edition, New York, Addison-Wesley, 1989. Chapter 9, section 9–5.Google Scholar
Haus, H. A. and Melcher, J. R Electromagnetic Fields and Energy, London, Prentice Hall, 1989. Chapter 14, sections 14.3 and 14.4.Google Scholar
Rizzi, P. A Microwave Engineering, London, Prentice Hall, 1988. Chapter 3, section 3.2.Google Scholar
Matick, R. E Transmission Lines for Digital and Communication Networks, New York, McGraw-Hill, 1969. Chapter 5.Google Scholar
Magnusson, P. C., Alexander, G. C. and Tripathi, V. K Transmission Lines and Wave Propagation, New York, CRC Press, 1992. Chapter 3.Google Scholar
Collin, R. E Foundations for Microwave Engineering, New York, McGraw-Hill, 1992. Chapter 3, sections 3.1 to 3.3.Google Scholar
Lee, T. H Planar Microwave Engineering, a Practical Guide to Theory, Measurements and Circuits, Cambridge, Cambridge University Press, 2004. Chapter 8, section 8.2.2.Google Scholar
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