EAN: 9783031004070

SYNTHESIS LECTURES ON ANTENNAS RECONFIGURABLE...

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.Contents:
Introduction   Definitions of Critical Parameters for Antenna Operation   Linkage Between
Frequency Response and Radiation Characteristics: Implications for Reconfigurable Antennas  
Methods for Achieving Frequency Response Reconfigurability   Methods for Achieving Polarization
Reconfigurability   Methods for Achieving Radiation Pattern Reconfigurability   Methods for
Achieving Compound Reconfigurable Antennas   Practical Issues for Implementing Reconfigurable
Antennas   Conclusions and Directions for Future work

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