The Spatial Structure of Electromagnetic Fields

This comprehensive new resource focuses on applied electromagnetics and takes readers beyond the conventional theory with the use of contemporary mathematics to improve the practical use of electromagnetics in emerging areas of field communications, wireless power transfer, metamaterials, MIMO and direction-of-arrival systems. The book explores the existing and novel theories and principles of electromagnetics in order to help engineers analyze and design devices for today#x92;s applications in wireless power transfers, NFC, and metamaterials. This book is organized into clear and logical sections spanning from fundamental theory, to applications, promoting clear understanding through-out. This resource presents the theory of electromagnetic near fields including chapters on reactive energy, spatial and spectral theory, the scalar antenna, and the morphogenesis of electromagnetic radiation in the near field zone. The Antenna Current Green#x92;s Function Formalism is explored with an emphasis on the foundations, the organic interrelationships between the fundamental operational modes of general antenna systems, and the spectral approach to antenna-to-antenna interactions. The book offers perspective on nonlocal metamaterials, including the material response theory, the far-field theory, and the near-field theory.

New Foundations for Applied Electromagnetics: The Spatial Structure of Fields; Contents; Chapter 1 General Outline and Scope of the Book; 1.1 MOTIVATION; 1.2 THE PRESENT STAGE OF ELECTROMAGNETIC SCIENCE; 1.3 FROM STRUCTURES IN SPACE TO SPACE STRUCTURES; 1.4 THE RELEVANCE OF SPATIAL STRUCTURES TO THE PRESENT TECHNOLOGICALWORLD; 1.5 THE STRUCTURE OF THE BOOK; 1.5.1 Part I: The Theory of Near Fields; 1.5.2 Part II: The Antenna Current Green's Function; 1.5.3 Part III: Nonlocal Metamaterials; 1.5.4 Part IV: Various Application; Part I: The Theory of ElectromagneticNear Fields.

Chapter 2Reactive Energy and the Near Field2.1 INTRODUCTION; 2.2 ELECTROMAGNETIC ENERGY IN ANTENNA THEORY; 2.3 ON REACTIVE ENERGY; 2.3.1 Introduction; 2.3.2 Background to the Concept of Reactive Energy; 2.3.3 A Generalized Approach to Reactive Energy; 2.3.4 The Limits of the Reactive Energy Concept and the Need toMove Beyond; 2.4 REMARKS ON STORED ENERGY; 2.5 BEYOND REA.