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Design and Implementation of Reconfigurable Antennas for Industrial and Medical Applications
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Author(s): Vikram N. (Sona College of Technology, Salem, India), Sudha V. (Department of ECE, Sona College of Technology, Salem, India), Divyabharathi P. (Department of ECE, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai, India)and Deepa K. R. (Dhirajlal Gandhi College of Technology, Salem, India)
Copyright: 2022
Pages: 12
Source title:
Antenna Design for Narrowband IoT: Design, Analysis, and Applications
Source Author(s)/Editor(s): Balachandra Pattanaik (Wollega University, Ethiopia), M. Saravanan (Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, India), U. Saravanakumar (Muthayammal Engineering College, India)and Ganesh Babu T R (Muthayammal Engineering College, India)
DOI: 10.4018/978-1-7998-9315-8.ch015
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Abstract
Reconfigurable antennas (RA) are capable of dynamically altering their frequency, polarization, and radiation properties in a controlled and reversible manner. They modify their geometry and behaviour to maximize the antenna performance in response to changes in their surrounding conditions. To implement a dynamical response, they employ different mechanisms such as PIN diodes, varactors, radio-frequency microelectromechanical systems (RF-MEMS), FETs, parasitic pixel layers, photoconductive elements, mechanical actuators, metamaterials, ferrites, and liquid crystals. These mechanisms enable intentional distribution of current on the antenna surface producing reversible modification of their properties. This chapter presents the design process and applications of RA. The latest advances on reconfigurable metamaterial engineering, and the current trends and future directions relating to RA are reviewed. Finally, the applications of RA in cognitive radio, multi-input multi-output (MIMO) systems, satellite communications, and biomedical devices are highlighted.
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