Creating a Gain Improvement Technique for a Horn Antenna using a Metamaterial Structure Inserted with a Thin Dielectric Sheet
Paowphattra Kamphikul1, *, Ukrit Mankong1, Rangsan Wongsan2
1 Department of Electrical Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
2 School of Telecommunication Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
Abstract
Objective:
This paper proposed a new technique for the metamaterial on the structure of the curved-woodpile Electromagnetic Band Gap (EBG) inserted with a dielectric slab for gain improvement in a conventional rectangular horn antenna.
Methods:
We described a method to enhance gain by transferring the electromagnetic fields from the aperture of a horn through the EBG structure. Furthermore, we present the design procedures for inserting a dielectric slab into two layers of the EBG structure for the reduction of distance between the horn and proposed EBG structure.
Results and Conclusions:
Such a proposed technique not only has the advantage of decreasing the total length of the antenna system but also providing higher gain with a low profile structure.
This idea has been verified by both simulation and experimental results. The fabricated antenna can achieve 23.9 dBi of gain or higher than the gain, which is obtained using a conventional rectangular horn antenna at around 7 dBi at an operating frequency of 10 GHz. It is apparent that a good qualitative agreement between the measurements and simulations was achieved.
Keywords: Gain improvement, Horn antenna, Metamaterial, Electromagnetic Band Gap (EBG), Curved-woodpile, Dielectric.
Article Information
Article History:
Received Date: 31/10/2018
Revision Received Date: 08/04/2019
Acceptance Date: 17/04/2019
Electronic publication date: 31/05/2019
Collection year: 2019
© 2019 Kamphikul et al.
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at:
https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
* Address correspondence to this author at the Department of Electrical Engineering, Chiang Mai University, Chiang Mai 50200, Thailand at;
Tel: +6653944140; Fax: +6653944140; E-mail: paowphattra.k@cmu.ac.th
Open Peer Review Details |
Manuscript submitted on 31-10-2018 |
Original Manuscript |
Creating a Gain Improvement Technique for a Horn Antenna using a Metamaterial Structure Inserted with a Thin Dielectric Sheet |