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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 ,
Jayakrishnan M. Purushothama ,
Manoj Mani ,
Aanandan Chandroth ,
Mohanan Pezholil  and
Vasudevan Kesavath
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: [email protected]
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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.

Keywords

Absorbersdipole antennametamaterialsreactive to propagatingconversion
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 4 , May 2018 , pp. 430 - 436
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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