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This volume constitutes the proceedings of the 11th International Conference on Waves and Stability in Continuous Media (WASCOM 2001). Topics addressed include: linear and nonlinear hyperbolic equations and specific aspects of wave propagation; stability of systems of PDEs; and more.

Wave-motion, Theory of --- Stability

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Wave equation --- Numerical analysis. --- Numerical solutions.

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Submillimeter waves --- Optoelectronic devices --- Millimeter wave devices

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Up-to-date coverage of the analysis and applications of coplanar waveguides to microwave circuits and antennas The unique feature of coplanar waveguides, as opposed to more conventional waveguides, is their uniplanar construction, in which all of the conductors are aligned on the same side of the substrate. This feature simplifies manufacturing and allows faster and less expensive characterization using on-wafer techniques. Coplanar Waveguide Circuits, Components, and Systems is an engineer's complete resource, collecting all of the available data on the subject. Rainee Simons thoroughly discusses propagation parameters for conventional coplanar waveguides and includes valuable details such as the derivation of the fundamental equations, physical explanations, and numerical examples. Coverage also includes: . Discontinuities and circuit elements. Transitions to other transmission media. Directional couplers, hybrids, and magic T. Microelectromechanical systems based switches and phase shifters. Tunable devices using ferroelectric materials. Photonic bandgap structures. Printed circuit antennas.

Microwave transmission lines --- Antennas (Electronics) --- Microwave transmission lines. --- Wave guides.

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This book provides a thorough introduction to one of the most efficient approximation methods for the analysis and solution of problems in theoretical physics and applied mathematics. It is written with practical needs in mind and contains a discussion of 50 problems with solutions, of varying degrees of difficulty. The problems are taken from quantum mechanics, but the method has important applications in any field of science involving second order ordinary differential equations. The power of the asymptotic solution of second order differential equations is demonstrated, and in each case the authors clearly indicate which concepts and results of the general theory are needed to solve a particular problem. This book will be ideal as a manual for users of the phase-integral method, as well as a valuable reference text for experienced research workers and graduate students.

WKB approximation. --- Wave equation. --- Differential equations, Partial --- Wave-motion, Theory of --- Wentzel-Kramers-Brillouin approximation --- Approximation theory --- Perturbation (Quantum dynamics) --- Schrödinger equation