Principles of Electromagnetic Waves and Materials, 2nd Edition

13Time-Domain Solutions

13.1Introduction

Section 1.3 briefly dealt with the solution of Maxwell’s equations in time domain. A simple example of obtaining the radiated fields when a point electric dipole is excited by an impulse current was discussed. Most of the rest of the chapters till now dealt with time-harmonic fields using the concept of phasors. We assumed that the transient response when needed can be obtained from the frequency response using a superposition integral. Using the Laplace transform technique and replacing (jω) by the Laplace transform variable s in the frequency response, we obtained the impulse response of a plasma half-space when excited by an impulse s wave in Section 9.9.

In this chapter, we will explore in a systematic ...