Millimeter-Wave Waveguides (NATO Science Series II: Mathematics, Physics and Chemistry Book 114)

**Millimeter-Wave Waveguides** is a monograph devoted to open waveguides for millimeter wave applications. In the first chapters, general waveguide theory is presented (with the emphasis on millimeter wave applications). Next, the book systematically describes the results of both theoretical and experimental studies of rectangular dielectric rod waveguides with high dielectric permittivities. Simple and accurate methods for propagation constant calculations for isotropic as well as anisotropic dielectric waveguides are described. Both analytical and numerical approaches are covered. Different types of transitions have been simulated in order to find optimal configurations as well as optimal dimensions of dielectric waveguides for the frequency band of 75-110 GHz. Simple and effective design is presented. The experimental studies of dielectric waveguides show that Sapphire waveguide can be utilized for this frequency band as a very low-loss waveguide. Design of antennas with low return loss based on dielectric waveguides is also described. Studies of surfaces and interactions between dissimilar materials or phases are vital for modern technological applications. Computer simulation methods are indispensable in such studies and this book contains a substantial body of knowledge about simulation methods as well as the theoretical background for performing computer experiments and analyzing the data. The book is self-contained, covering a range of topics from classical statistical mechanics to a variety of simulation techniques, including molecular dynamics, Langevin dynamics and Monte Carlo methods. A number of physical systems are considered, including fluids, magnets, polymers, granular media, and driven diffusive systems. The computer simulation methods considered include both standard and accelerated versions. The simulation methods are clearly related to the fundamental principles of thermodynamics and statistical mechanics. Introduction....Pages 1-3 General theory of waveguides....Pages 5-37 Theory of high-frequency resonators....Pages 39-48 Waves in crystals and anisotropic waveguides....Pages 49-61 Nonreciprocal media waves in ferrite waveguides....Pages 63-77 Dielectric waveguides: classical methods for propagation constant calculations....Pages 79-101 Fabrication and measurements....Pages 103-113 Excitation of millimeter-wave dielectric waveguides: computer simulations and experiments....Pages 115-148 Dielectric waveguide devices and integrated circuits....Pages 149-180 This introductory chapter presents the fundamental theory of regular waveguides, which is needed for understanding of advanced and novel structures. CD-ROM contains: "modified Marcatili's and Goell'd methods."