About the Book

An antenna or aerial is the contact between radio waves travelling through space and electric currents flowing through metal conductors in radio engineering. It is used in conjunction with a transmitter or receiver. Radio waves are electromagnetic waves that convey messages at the speed of light across the air (or through space) with nearly little transmission loss. An antenna is a device that transforms electrical energy to radio waves and back. It is often used in conjunction with a radio transmitter or receiver. A radio transmitter sends an oscillating radio frequency electric current to the antenna's terminals during transmission, and the antenna emits the energy contained in the current as electromagnetic waves (radio waves). Thus, the antenna's impedance has a physical component, a resistance, and takes power from the source. If the antenna is efficient, the majority of the power will be dispersed by (energy-bearing) electromagnetic waves, with just a tiny part being wasted by ohmic heating of the antenna. This book attempts to understand the multiple branches that fall under the discipline of antenna & radio wave propagation and how such concepts have practical applications. It describes in a detailed manner the theories and concepts of various different branches associated with this field. It deals with electromagnetic fields, radio waves, natural interference and transmission lines. It also explores high-frequency building-block antennas, antennas for other frequencies, VHF, UHF and microwave antennas. It presents researches and studies performed by experts across the globe. This book will help the readers in keeping pace with the rapid changes in this field. Coherent flow of topics, student-friendly language and extensive use of examples make this book an invaluable source of knowledge.

About The Editor

Drema Boyer is a Research Associate at Institute of Technology, Durango. She received her Ph.D. in Telecommunications and Network Engineering from Public University of Science, Vermont. Her current researches include radio communications and network design. Boyer was also awarded the “Distinguished Faculty Lecturer” award for her outstanding contribution to the student community in the field of radio frequency identification. She has written numerous articles and research papers on power engineering, telecommunications, control systems, radio-frequency engineering and signal processing.

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