Reconfigurable Antennas

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Morgan & Claypool Publishers, 2007 - Technology & Engineering - 65 pages
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This lecture explores the emerging area of reconfigurable antennas from basic concepts that provide insight into fundamental design approaches to advanced techniques and examples that offer important new capabilities for next-generation applications. Antennas are necessary and critical components of communication and radar systems, but sometimes their inability to adjust to new operating scenarios can limit system performance. Making antennas reconfigurable so that their behavior can adapt with changing system requirements or environmental conditions can ameliorate or eliminate these restrictions and provide additional levels of functionality for any system. For example, reconfigurable antennas on portable wireless devices can help to improve a noisy connection or redirect transmitted power to conserve battery life. In large phased arrays, reconfigurable antennas could be used to provide additional capabilities that may result in wider instantaneous frequency bandwidths, more extensive scan volumes, and radiation patterns with more desirable side lobe distributions. Written for individuals with a range of experience, from those with only limited prior knowledge of antennas to those working in the field today, this lecture provides both theoretical foundations and practical considerations for those who want to learn more about this exciting subject.
 

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Contents

Chapter 1 IntroductionMotivation for Reconfigurable Antennas
1
Chapter 2 Definitions of Critical Parameters for Antenna Operation
5
Chapter 3 Linkage Between Frequency Response and Radiation Characteristics
9
Chapter 4 Methods for Achieving Frequency Response Reconfigurability
11
Chapter 5 Methods for Achieving Polarization Reconfigurability
21
Chapter 6 Methods for Achieving Radiation Pattern Reconfigurability
25
Chapter 7 Methods for Achiebving Compound Reconfigurable Antennas
43
Chapter 8 Practical Issues for Implementing Reconfigurable Antennas
47
Chapter 9 Conclusions and Directions for Future Work
51
References
55
Author Biography
65
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