Peter Russer – författare

This newly revised, authoritative resource is essential reading for professionals looking for a clear, complete overview of basic electromagnetics principles and applications to antenna and microwave circuit design for communications. Among the numerous updates, the second edition features a brand new chapter on the increasingly important topic of filters, an expanded treatment of antennas, and problem sets that help reinforce the understanding of key concepts in each chapter. Presenting examples in both exterior differential form calculus and conventional vector notation, the book includes concise explanations of all required mathematical concepts needed to fully comprehend the material. This unique volume is an ideal reference for engineers in the communications engineering field, and also serves as an excellent text for related graduate-level courses. There is no other book currently available that explains electromagnetics in such an easy-to-understand manner.

This book consists of contributions given at a symposium in honour of Leopold B. Felsen. They represent the state of the art in dealing with electromagnetic fields, their network theory representation, their computation and, finally, with system applications. The network formulation of field problems can improve the problem formulation and also contribute to the solution methodology. Network theory systematic approaches for circuit analysis are based on the separation of the circuit into the connection circuit and the circuit elements. Many applications in science and technology rely on computations of the electromagnetic field in either man-made or natural complex structures. Because different problems have their own combination of geometrical features, materials, scales and frequency ranges, no single method is best suited for handling all possible cases: instead, a combination of methods or hybridization is needed to attain the greatest flexibility and efficiency.

These contributions in honour of Wolfgang J R Hoefer represent the state of the art in time domain methods in engineering electrodynamics for electromagnetic modeling, including the Transmission Line Matrix (TLM) method, the application of network concepts, circuit and system applications and systems and measurement techniques in broadband devices.

In this monograph, the authors propose a systematic and rigorous treatment of electromagnetic field representations in complex structures. The architecture suggested in this book accommodates use of different numerical methods as well as alternative Green's function representations in each of the subdomains resulting from a partitioning of the overall problem. The subdomains are regions of space where electromagnetic energy is stored and are described in terms of equivalent circuit representations based either on lumped element circuits or on transmission lines. Connection networks connect the subcircuits representing the subdomains. The connection networks are lossless, don't store energy and represent the overall problem topology. This is similar to what is done in circuit theory and permits a phrasing of the solution of EM field problems in complex structures by Network-oriented methods.

This book consists of contributions given at a symposium in honour of Leopold B. Felsen. They represent the state of the art in dealing with electromagnetic fields, their network theory representation, their computation and, finally, with system applications. The network formulation of field problems can improve the problem formulation and also contribute to the solution methodology. Network theory systematic approaches for circuit analysis are based on the separation of the circuit into the connection circuit and the circuit elements. Many applications in science and technology rely on computations of the electromagnetic field in either man-made or natural complex structures. Because different problems have their own combination of geometrical features, materials, scales and frequency ranges, no single method is best suited for handling all possible cases: instead, a combination of methods or hybridization is needed to attain the greatest flexibility and efficiency.

On May 16th 2007 the Faculty of Electrical Engineering and Information Te- nology of the Technische Universitat .. Munchen .. bestowed the degree of the doctor honoris causa to Wolfgang J. R. Hoefer for Extraordinary achievements in the theory of electromagnetic elds. On this special occasion a symposium on Time Domain Methods in Modern Engineering Electrodynamics has been held in honor of P- fessor Wolfgang J. R. Hoefer at the Technische Universitat .. Munchen .. on May 16 and 17, 2007. The symposium topic was focused on the main area of research of Wolfgang J. R. Hoefer, the time domain methods in computational electromagnetics especially the transmission line matrix method and its applications. The transm- sion line matrix method has been developed and rst published by Johns and Beurle in 1971. In the past 20 years Wolfgang Hoefer has given exemplary contributions to the development of the transmission line method. Space and time discretizing time domain methods have emerged as key nume- cal methods in computational electromagnetics. Time domain methods are versatile and can be applied to the solution of wide range of electromagnetic eld pr- lems.Computing the response of an electromagnetic structure to an impulsive - citation localized in space and time provides a comprehensive characterization of the electromagnetic properties of the structure in a wide frequency range. The most important methods are the nite difference time domain and the transmission line matrix methods.

In this monograph, the authors propose a systematic and rigorous treatment of electromagnetic field representations in complex structures. The architecture suggested in this book accommodates use of different numerical methods as well as alternative Green's function representations in each of the subdomains resulting from a partitioning of the overall problem. The subdomains are regions of space where electromagnetic energy is stored and are described in terms of equivalent circuit representations based either on lumped element circuits or on transmission lines. Connection networks connect the subcircuits representing the subdomains. The connection networks are lossless, don't store energy and represent the overall problem topology. This is similar to what is done in circuit theory and permits a phrasing of the solution of EM field problems in complex structures by Network-oriented methods.

Silicon-Based Millimeter-Wave Devices describes field-theoretical methods for the design and analysis of planar waveguide structures and antennas. The principles and limitations of transit-time devices with different injection mechanisms are discussed, as are aspects of fabrication and characterization. The physical properties of silicon Schottky contacts and diodes are treated in a separate chapter. Two chapters cover the silicon/germanium devices: physics and RF properties of the heterobipolar transistor and quantum effect devices such as the resonant tunneling element are described. The integration of devices in monolithic circuits is explained and advanced technologies are presented along with the self-mixing oscillator operation. Finally sensor and system applications are considered.