Small antenna design [electronic resource]

• 作者： Miron, Douglas B.
• 其他題名：
  • Communications engineering series
• 出版： Burlington, MA : Newnes/Elsevier
• 叢書名： Communications engineering series
• 主題： Radio--Antennas--Design and construction. , Electronic books.
• ISBN： 9780750678612 、 0750678615
• FIND@SFXID: CGU
• 資料類型: 電子書
• 內容註: Includes bibliographical references and index. Preface -- Chapter 1: Introduction -- 1.1 What is Small? -- 1.2 What are the Problems? -- 1.3 Some Historical Small Antenna Types and Applications -- 1.4 Some Present and Future Small Antennas -- References -- Chapter 2: Antenna Fundamentals I -- 2.1 Electromagnetic Waves -- 2.1.1Waves in Space -- 2.1.2 Waves in Transmission Lines -- 2.1.3 Power in Waves -- 2.2 Polarization -- 2.3 The Short Dipole -- 2.3.1 Radiation Pattern -- 2.3.2 Circuit Behavior -- 2.4 The Small Loop -- 2.4.1 Circuit Behavior -- 2.5 Directionality, Efficiency, and Gain -- References -- Problems -- Chapter 3: Antenna Fundamentals II -- 3.1 Bandwidth and Quality Factor, Q -- 3.2 Impedance Matching and System Efficiency -- 3.2.1 Narrow-Band Matching -- 3.2.2 Wideband Matching -- 3.2.3 System Efficiency -- 3.3 Reception -- 3.3.1 Effective Height -- 3.3.2 Effective Area -- 3.3.3 Reception Pattern -- 3.4 Ground Effects -- 3.4.1 Image Theory -- 3.4.2 Vertical Dipole Above a Perfect Ground Plane -- 3.4.3 Horizontal Dipole Above a PEC Plane -- 3.4.4 Grounded-Source Antennas -- 3.4.5 Counterpoise -- 3.4.6 Summary of Ground Effects -- 3.5 Improvements -- References -- Problems -- Chapter 4: Introduction to Numerical Modeling of Wire Antennas -- 4.1 General Concepts -- 4.2 The Mathematical Basics of the Numerical Electromagnetic Code (NEC) -- 4.2.1 Basis Functions -- 4.2.2 Applied Field Models -- 4.2.3 Solving the Integral Equation -- 4.3 Using NEC in the Command Window -- 4.4 Modeling Guidelines -- 4.5 NEC in a Graphical User Interface (GUI) -- 4.6 Examples from Chapters 2 and 3 -- 4.6.1 The Short Dipole -- 4.6.2 Small Loop in Free Space -- 4.6.3 End-Loaded Short Dipole -- References -- Problems -- Chapter 5: Programmed Modeling -- 5.0 Introduction -- 5.1 Using Wire-List Generators in NEC -- 5.2 Using Code to Generate a Wire List -- Problems -- Chapter 6: Open-Ended Antennas -- 6.0 Introduction -- 6.1 Thick Monopoles -- 6.1.1 Modeling Thick Monopoles -- 6.2 Top Loading -- 6.2.1 The Inverted-L -- 6.2.2 T
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• 摘要註: As wireless devices and systems get both smaller and more ubiquitous, the demand for effective but small antennas is rapidly increasing. This book will describe the theory behind effective small antenna design and give design techniques and examples for small antennas for different operating frequencies. Design techniques are given for the entire radio spectrum, from a very hundred kilohertz to the gigahertz range. Unlike other antenna books which are heavily mathematical and theoretical, Douglas Miron keeps mathematics to the absolute minimum required to explain design techniques. Ground planes, essential for operation of many antenna designs, are extensively discussed. The book will also include a CD-ROM with design software that will greatly simplify readers' daily design tasks. *Author's extensive experience as a practicing antenna design engineer gives book a strong "hands-on" emphasis *Covers antenna design techniques from very low frequency (below 300 kHz) to microwave (above 1 GHz) ranges *Special attention is given to antenna design for mobile/portable applications such as cell phones, WiFi, etc.
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