Electromagnetic Waves and Antennas

Preface
This text provides a broad and applications-oriented introduction to electromagnetic waves and antennas. Current interest in these areas is driven by the growth in wireless and fiber-optic communications, information technology, and materials science. Communications, antenna, radar, and microwave engineers must deal with the generation, transmission, and reception of electromagnetic waves. Device engineers working

on ever-smaller integrated circuits and at ever higher frequencies must take into account

wave propagation effects at the chip and circuit-board levels. Communication and computer

network engineers routinely use waveguiding systems, such as transmission lines

and optical fibers. Novel recent developments in materials, such as photonic bandgap

structures, omnidirectional dielectric mirrors, and birefringent multilayer films, promise

a revolution in the control and manipulation of light. These are just some examples of

topics discussed in this book. The text is organized around three main topic areas:

• The propagation, reflection, and transmission of plane waves, and the analysis

and design of multilayer films.

• Waveguides, transmission lines, impedance matching, and S-parameters.

• Linear and aperture antennas, scalar and vector diffraction theory, antenna array

design, and coupled antennas.

The text emphasizes connections to other subjects. For example, the mathematical

techniques for analyzing wave propagation in multilayer structures and the design of

multilayer optical filters are the same as those used in digital signal processing, such

as the lattice structures of linear prediction, the analysis and synthesis of speech, and

geophysical signal processing. Similarly, antenna array design is related to the problem

of spectral analysis of sinusoids and to digital filter design, and Butler beams are

equivalent to the FFT.

Use

The book is appropriate for first-year graduate or senior undergraduate students. There

is enough material in the book for a two-semester course sequence. The book can also

be used by practicing engineers and scientists who want a quick review that covers most

of the basic concepts and includes many application examples.

The book is based on lecture notes for a first-year graduate course on “Electromagnetic

Waves and Radiation” that I have been teaching at Rutgers over the past twenty

years. The course draws students from a variety of fields, such as solid-state devices,

wireless communications, fiber optics, abiomedical engineering, and digital signal and

array processing. Undergraduate seniors have also attended the graduate course successfully.

The book requires a prerequisite course on electromagnetics, typically offered at the

junior year. Such introductory course is usually followed by a senior-level elective course

on electromagnetic waves, which covers propagation, reflection, and transmission of

waves, waveguides, transmission lines, and perhaps some antennas. This book may be

used in such elective courses with the appropriate selection of chapters.

At the graduate level, there is usually an introductory course that covers waves,

guides, lines, and antennas, and this is followed by more specialized courses on antenna

design, microwave systems and devices, optical fibers, and numerical techniques

in electromagnetics. No single book can possibly cover all of the advanced courses.

This book may be used as a text in the initial course, and as a supplementary text in the

specialized courses.

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