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A metamaterial absorber based high gain directional dipole antenna

Published online by Cambridge University Press:  03 April 2018

Sarin Valiyaveettil Pushpakaran*
Affiliation:
Department of Electronics, Government College Chittur, Palakkad, Kerala-678104, India
Jayakrishnan M. Purushothama
Affiliation:
Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Cochin-22, Kerala, India
Manoj Mani
Affiliation:
Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Cochin-22, Kerala, India
Aanandan Chandroth
Affiliation:
Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Cochin-22, Kerala, India
Mohanan Pezholil
Affiliation:
Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Cochin-22, Kerala, India
Vasudevan Kesavath
Affiliation:
Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Cochin-22, Kerala, India
*
Author for correspondence: Sarin Valiyaveettil Pushpakaran, E-mail: sarincrema@gmail.com

Abstract

A novel idea for generating directional electromagnetic beam using a metamaterial absorber for enhancing radiation from a microwave antenna in the S-band is presented herewith. The metamaterial structure constitutes the well-known stacked dogbone doublet working in the absorption mode. The reflection property of the dogbone metamaterial absorber, for the non-propagating reactive near-field, is utilized for achieving highly enhanced and directional radiation characteristics. The metamaterial absorber converts the high-spatial reactive spectrum in the near-field into propagating low-spatial spectrum resulting in enhanced radiation efficiency and gain. The gain of a printed standard half-wave dipole is enhanced to 10 dBi from 2.3 dBi with highly directional radiation characteristics at resonance.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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