Presents new sections on flexible and conformal bowtie, Vivaldi antenna, antenna miniaturization, antennas for mobile communications, dielectric resonator antennas, and scale modeling.Readers should have a basic knowledge of undergraduate electromagnetic theory, including Maxwell's equations and the wave equation, introductory physics, and differential and integral calculus. The text contains sufficient mathematical detail to enable undergraduate and beginning graduate students in electrical engineering and physics to follow the flow of analysis and design. Among these antenna configurations are linear dipoles loops arrays broadband antennas aperture antennas horns microstrip antennas and reflector antennas. Due to the variety of methods of analysis and design, and the different antenna structures available, the applications covered in this book are made to some of the most basic and practical antenna configurations.
MICROSTRIP ANTENNA THEORY AND APPLICTION S. S. ZHANG HOW TO
In most cases, these works may not be reposted without the explicit permission of the copyright holder.This book introduces the fundamental principles of antenna theory and explains how to apply them to the analysis, design, and measurements of antennas. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. Copyright and all rights therein are retained by authors or by other copyright holders. This material is presented to ensure timely dissemination of scholarly and technical work. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. Personal use of this material is permitted. IEEE Transactions on Antennas and Propagation © 2006 IEEE. Compared with single-ended microstrip antennas, the differentially-driven microstrip antennas have larger resonant resistance, similar co-polar radiation patterns, and lower cross-polar radiation component. However, when the dual feeds are located near to each other έ/λ < 0.1, the resonance does not occur, the input resistance is quite small, and the input impedance is inductive. When the dual feeds are located far from each other έ/λ < 0.1, the resonance occurs, and the input resistance at resonance is rather large. Results show that the occurrence of resonance for the differentially-driven microstrip antennas also depends on the ratio of the separation έ of the dual feeds to the free-space wavelength. Their performances were experimentally verified. The differentially-driven microstrip antennas were fabricated. The theory of microstrip antennas based on the improved cavity model is expanded to analyze the input impedance and radiation characteristics of the differentially-driven microstrip antennas. This paper studies differentially-driven microstrip antennas. IEEE transactions on antennas and propagation IEEE Transactions on Antennas and Propagation, 54(4), 1092-1099. Theory and analysis of differentially-driven microstrip antennas. Theory and analysis of differentially-driven microstrip antennasĭRNTU::Engineering::Electrical and electronic engineering
0 kommentar(er)
