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Miniaturization of Dielectric Resonator Antenna by Using Artificial Magnetic Conductor Surface

Khan, Shahid, Ali, Hazrat, Khalily, Mohsen, Shah, Syed Usman Ali, Kazim, Jalil Ur Rehman, Ali, Haider and Tanougast, Camel (2020) Miniaturization of Dielectric Resonator Antenna by Using Artificial Magnetic Conductor Surface IEEE Access, 8. pp. 68548-68558.

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Abstract

In this work, a dielectric resonator antenna (DRA) is miniaturized by using Artificial Magnetic conductor (AMC) surface without disturbing other important parameters. The design has three main features: (i) simple micro-strip line feeding, (ii) use of parasitic metallic strip to achieve impedance matching, and (iii) use of AMC surface for design miniaturization. The miniaturization is performed for dielectric resonator antenna at 3.5 GHz. Without changing the basic characteristic of the antenna such as gain, resonance frequency and efficiency, the size of the antenna was reduced by 85%. The AMC surface and DRA both are positioned on the FR4 substrate. The AMC surface consists of small patches of copper. DRA is mounted on the AMC surface, which significantly reduces the overall DRA volume. Nine AMC patches were introduced with a small gap between them. AMC patches were shorted with the ground metal with the help of small metallic vias. For an overall performance analysis, the design was fabricated, and measured results were taken. The fabricated design covers a bandwidth of 180 MHz for −10 dB reference value of the reflection coefficient, which is mainly used for 5G wireless application. The design has 14.2% impedance bandwidth. Based on the analysis made for the proposed design, it is found that this simple technique highly reduces the DR volume (85%) and ground surface (15.5%) while maintaining the overall performance of the square DRA.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Faculty of Engineering and Physical Sciences
Authors :
NameEmailORCID
Khan, Shahid
Ali, Hazrat
Khalily, Mohsenm.khalily@surrey.ac.uk
Shah, Syed Usman Ali
Kazim, Jalil Ur Rehman
Ali, Haider
Tanougast, Camel
Date : 6 April 2020
DOI : 10.1109/ACCESS.2020.2986048
Copyright Disclaimer : Copyright 2020 The Authors. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/
Uncontrolled Keywords : Surface impedance; Resonant frequency; Dielectric resonator antennas; Bandwidth; Dielectrics; Gain; Artificial magnetic conductor; LTE; Antenna miniaturization; Metallic vias
Additional Information : This work was supported in part by the 5G Innovation Center, University of Surrey, United Kingdom, and in part by the LCOMS Laboratory, University de Lorraine, France, under DrEAM mobility under Grant MDD/DrEAM/2019-06/N027
Depositing User : Diane Maxfield
Date Deposited : 21 Apr 2020 12:18
Last Modified : 21 Apr 2020 12:18
URI: http://epubs.surrey.ac.uk/id/eprint/854151

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