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Informationen zum Autor Paul F. Goldsmith was appointed Director of the National Astronomy and Ionosphere Center and professor of astronomy at Cornell University in 1993. He is a coinvestigator on the Submillimeter Wave Astronomy Satellite (SWAS), currently scheduled for launch in 1998. Dr. Goldsmith was a founder of Millitech Corporation and was MTT Distinguished Lecturer 1992-1993. He is a Fellow of IEEE. Klappentext Electrical Engineering Quasioptical Systems Gaussian Beam Quasioptical Propagation and Applications The increasing commercial use of millimeter wavelengths for remote sensing, communications, and radar systems has driven the need for new low-cost, high-performance systems, and with it, the need for quasioptical systems. Advantages of quasioptical propagation include broader bandwidth, lower insertion loss, better polarization purity, and higher power-handling capability. As this book illustrates, quasioptical system design using Gaussian beam propagation is relatively straightforward, yielding valuable insights without requiring extensive computations. Combining a general introduction to Gaussian beams and quasioptical propagation with practical applications, Quasioptical Systems provides a state-of-the-art treatment of the design of low-loss, broadband systems at microwave to submillimeter wavelengths. The approach presented involves utilizing a beam with a Gaussian distribution of field strength perpendicular to its axis, which in turn propagates in a simple, predictable fashion. Features include: A convenient summary of Gaussian beam propagation formulas Extensive coverage of present-day quasioptical components and their performance In-depth coverage of dielectric materials uses at millimeter and submillimeter wavelengths An analysis of lenses and mirrors used as beam focusing elements An integrated approach to quasioptical system design This book will be of key interest to systems designers, antenna engineers, communications and radar systems engineers, and researchers. Inhaltsverzeichnis PREFACE. ACKNOWLEDGMENTS. Chapter 1: Introduction and Historical Overview. 1.1 What Is Quasioptics? 1.2 Why Quasioptics Is of Interest. 1.3 Historical Overview. 1.4 Organization of This Book. 1.5 Bibliographic Notes. Chapter 2: Gaussian Beam Propagation. 2.1 Derivation of Basic Gaussian Beam Propagation. 2.2 Description of Gaussian Beam Propagation. 2.3 Geometrical Optics Limits of Gaussian Beam Propagation. 2.4 Higher Order Gaussian Beam Mode Solutions of the Paraxial Wave Equation. 2.5 The Size of Gaussian Beam Modes. 2.6 Gaussian Beam Measurement. 2.7 Inverse Formulas for Gaussian Beam Propagation. 2.8 The Paraxial Limit and Improved Solutions to the Wave Equation. 2.9 Alternative Derivation of the Gaussian Beam Propagation Formula. 2.10 Bibliographic Notes. Chapter 3: Gaussian Beam Transformation. 3.1 Introduction. 3.2 Ray Matrices and the Complex Beam Parameter. 3.3 Gaussian Beam Transformation by Focusing Elements. 3.4 Mode Matching. 3.5 Complex Beam Parameter and Smith Chart Representation. 3.6 Transformation of Higher Order Gaussian Beam Modes. 3.7 Bibliographic Notes. Chapter 4: Gaussian Beam Coupling. 4.1 Introduction. 4.2 Axially Aligned Beams. 4.3 Tilted Beams. 4.4 Offset Beams. 4.5 Bibliographic Notes. Chapter 5: Practical Aspects of Quasioptical Focusing Elements. 5.1 Introduction. 5.2 Single-Pixel and Imaging Systems. 5.3 The Eikonal Equation. 5.4 Refractive Focusing Elements. 5.5 Zoned Lenses. 5.6 Zone Plate Lenses. 5.7 Metallic Lenses. 5.8 Reflective Focusing Elements. 5.9 Bibliographic Notes. Chapter 6: Gaussian Beams and Antenna Feed Sys...
