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Informationen zum Autor Hisamatsu Nakano is Professor in the Department of Electrical and Electronics, Science and Engineering at Hosei University, Tokyo, Japan. Professor Nakano received the 2010 Prize for Science and Technology from Japan's Minister of Education, Culture, Sports, Science, and Technology, and is the holder of 78 patents, author of over 300 papers, and a Life Fellow of the IEEE. Klappentext Presents recent progress in low-profile natural and metamaterial antennasThis book presents the full range of low-profile antennas that use novel elements and take advantage of new concepts in antenna implementation, including metamaterials. Typically formed by constructing lattices of simple elements, metamaterials possess electromagnetic properties not found in naturally occurring materials, and show great promise in a number of low-profile antenna implementations. Introductory chapters define various natural and metamaterial-based antennas and provide the fundamentals of writing computer programs based on the method of moments (MoM) and the finite-difference time-domain method (FDTDM). Chapters then discuss low-profile natural antennas classified into base station antennas, mobile card antennas, beam-forming antennas, and satellite-satellite and earth-satellite communications antennas. Final chapters look at various properties of low-profile metamaterial-based antennas, revealing the strengths and limitations of the metamaterial-based straight line antenna (metaline antenna), metamaterial-based loop antenna (metaloop), open metaloop antenna, the effects of counter dual-band CP radiation, and more.* Offers comprehensive coverage of both metamaterials and natural materials for low-profile antennas* Written by an internationally-recognized expert in the field of low-profile antennas* Depicts actual high-performance low-profile antennas for the antenna engineer* Draws on classroom-tested material in graduate courses and short courses over the past 20 yearsLow-Profile Natural and Metamaterial Antennas is a must-have reference book for advanced undergraduate and graduate level students as well as antenna engineers interested in low-profile antenna design theory. Zusammenfassung Presents recent progress in low-profile natural and metamaterial antennas This book presents the full range of low-profile antennas that use novel elements and take advantage of new concepts in antenna implementation, including metamaterials. Inhaltsverzeichnis Preface xi Acknowledgments xv Part I Introduction 1 1. Categorization of Natural Materials and Metamaterials 3 1.1 Natural and Metamaterial Antennas Discussed in This Book 3 1.2 Some Antenna Examples 6 References 8 2. Integral Equations and Method of Moments 11 2.1 Basic Antenna Characteristics 11 2.2 Integral Equation on a Straight-Wire Antenna 15 2.3 Method of Moments 16 2.4 Integral Equation for an Arbitrarily Shaped Wire Antenna in Free Space 19 2.5 Point-Matching Technique 22 2.6 Integral Equation N1 for an Arbitrarily Shaped Wire Antenna: Closed Kernel Expression 23 2.7 Integral Equations N2 and N3 for an Antenna System Composed of an Arbitrarily Shaped Wire and an Arbitrarily Shaped Aperture and Their MoM Transformation 27 2.8 Integral Equation N4 for an Arbitrarily Shaped Wire Antenna on a Dielectric Substrate Backed by a Conducting Plane and Its MoM Transformation 34 2.9 Integral Equation N5 for an Arbitrarily Shaped Wire Antenna on a Dielectric Half-Space and Its Transformation Using a Finite-Difference Technique 41 References 46 3. Finite-Difference Time-Domain Methods (FDTDMs) 49 3.1 Basis 49 3.2 LOD-FDTD Method 52 References 57 Part II Low-Profile Natural Antennas 59 Part II-1 Base Station Antennas 61 4. Inverted-F Antennas 63<...
