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Pablito Burgos
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Electromagnetic Wave Theory Kong.pdf


Electromagnetic Wave Theory by Jin Au Kong




Electromagnetic wave theory is a branch of physics that studies the properties and behavior of electromagnetic waves, which are oscillations of electric and magnetic fields that propagate through space and time. Electromagnetic waves include visible light, radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays. They are responsible for many phenomena in nature and technology, such as communication, imaging, heating, radiation, and optical devices.


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One of the most comprehensive and authoritative textbooks on electromagnetic wave theory is written by Jin Au Kong, a professor of electrical engineering at the Massachusetts Institute of Technology. The book, titled Electromagnetic Wave Theory, was first published in 1986 by Wiley Interscience, and has been revised and updated several times since then. The latest edition was published in 2008 by EMW Publishing Company. The book covers a wide range of topics essential to the understanding of electromagnetic waves, such as fundamental laws and equations, transmission line theory, reflection, transmission, guidance, and resonance of electromagnetic waves, radiation and antenna theory, scattering by various objects and media, and Maxwell's theory from the point of view of special relativity.


The book presents a unified macroscopic theory of electromagnetic waves in accordance with the principle of special relativity from the point of view of the form invariance of the Maxwell equations and the constitutive relations. Great emphasis is placed on the fundamental importance of the k vector in electromagnetic wave theory. The k vector is a vector that represents the direction and magnitude of the spatial frequency (or wave number) of an electromagnetic wave. The k vector plays a crucial role in determining the propagation characteristics, polarization states, energy fluxes, and phase velocities of electromagnetic waves. The book also introduces a fundamental unit Ko=2π meter for the spatial frequency, which is cycle per meter in spatial variation. This is similar to the fundamental unit for temporal frequency Hz, which is cycle per second in time variation. The unit Ko is directly proportional to the unit Hz; one Ko in spatial frequency corresponds to 300 MHz in temporal frequency.


The book also introduces the concept of bianisotropic media, which are general media that exhibit both anisotropy (directional dependence) and bi-anisotropy (coupling between electric and magnetic fields) in their electromagnetic response. Bianisotropic media can be used to model complex materials such as chiral media (media that have different properties for left- and right-handed circularly polarized waves), metamaterials (artificial materials that have unusual electromagnetic properties not found in nature), and plasmonic media (media that support surface plasmon polaritons, which are coupled oscillations of electrons and electromagnetic fields at metal-dielectric interfaces). The book develops a kDB system to study waves in anisotropic and bianisotropic media, which is a generalization of the conventional kDB system for isotropic media.


The book is intended for undergraduate and graduate students who are interested in learning electromagnetic wave theory, as well as researchers and engineers who want to deepen their knowledge and apply it to various fields. The book is organized in the order of increasing complexity in mathematical techniques and conceptual abstraction and sophistication. Each chapter contains a problem section at the end that provides useful exercises and applications. The book also contains many figures and diagrams that illustrate the concepts and phenomena discussed in the text.


The book can be downloaded as a PDF file from [this link], or accessed online from [this archive]. A brief overview of the contents of the book can be found [here].


I hope you find this article helpful and informative. If you have any questions or feedback, please let me know.


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