Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board
Abstract The paper demonstrates an effective technique to significantly enhance the bandwidth and radiation gain of an otherwise narrowband composite right/left-handed transmission-line (CRLH-TL) antenna using a non-Foster impedance matching circuit (NF-IMC) without affecting the antenna’s stability...
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2021-04-01
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doaj-8f63b1c05899432085d5adb48717a2802021-04-04T11:31:26ZengNature Publishing GroupScientific Reports2045-23222021-04-0111111110.1038/s41598-021-86973-xBandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit boardMohammad Alibakhshikenari0Bal S. Virdee1Ayman A. Althuwayb2Leyre Azpilicueta3Naser Ojaroudi Parchin4Chan H. See5Raed A. Abd-Alhameed6Francisco Falcone7Isabelle Huynen8Tayeb A. Denidni9Ernesto Limiti10Electronic Engineering Department, University of Rome “Tor Vergata”Center for Communications Technology, London Metropolitan UniversityDepartment of Electrical Engineering, Jouf UniversitySchool of Engineering and Sciences, Tecnologico de MonterreyFaculty of Engineering and Informatics, University of BradfordSchool of Engineering and the Built Environment, Edinburgh Napier UniversityFaculty of Engineering and Informatics, University of BradfordElectronic and Communication Engineering Department, Public University of NavarreInstitute of Information and Communication Technologies, Electronics and Applied Mathematics, Université Catholique de LouvainInstitut National de La Recherche Scientifique (INRS), University of QuebecElectronic Engineering Department, University of Rome “Tor Vergata”Abstract The paper demonstrates an effective technique to significantly enhance the bandwidth and radiation gain of an otherwise narrowband composite right/left-handed transmission-line (CRLH-TL) antenna using a non-Foster impedance matching circuit (NF-IMC) without affecting the antenna’s stability. This is achieved by using the negative reactance of the NF-IMC to counteract the input capacitance of the antenna. Series capacitance of the CRLH-TL unit-cell is created by etching a dielectric spiral slot inside a rectangular microstrip patch that is grounded through a spiraled microstrip inductance. The overall size of the antenna, including the NF-IMC at its lowest operating frequency is 0.335λ0 × 0.137λ0 × 0.003λ0, where λ0 is the free-space wavelength at 1.4 GHz. The performance of the antenna was verified through actual measurements. The stable bandwidth of the antenna for |S11|≤ − 18 dB is greater than 1 GHz (1.4–2.45 GHz), which is significantly wider than the CRLH-TL antenna without the proposed impedance matching circuit. In addition, with the proposed technique the measured radiation gain and efficiency of the antenna are increased on average by 3.2 dBi and 31.5% over the operating frequency band.https://doi.org/10.1038/s41598-021-86973-x |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mohammad Alibakhshikenari Bal S. Virdee Ayman A. Althuwayb Leyre Azpilicueta Naser Ojaroudi Parchin Chan H. See Raed A. Abd-Alhameed Francisco Falcone Isabelle Huynen Tayeb A. Denidni Ernesto Limiti |
spellingShingle |
Mohammad Alibakhshikenari Bal S. Virdee Ayman A. Althuwayb Leyre Azpilicueta Naser Ojaroudi Parchin Chan H. See Raed A. Abd-Alhameed Francisco Falcone Isabelle Huynen Tayeb A. Denidni Ernesto Limiti Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board Scientific Reports |
author_facet |
Mohammad Alibakhshikenari Bal S. Virdee Ayman A. Althuwayb Leyre Azpilicueta Naser Ojaroudi Parchin Chan H. See Raed A. Abd-Alhameed Francisco Falcone Isabelle Huynen Tayeb A. Denidni Ernesto Limiti |
author_sort |
Mohammad Alibakhshikenari |
title |
Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board |
title_short |
Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board |
title_full |
Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board |
title_fullStr |
Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board |
title_full_unstemmed |
Bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board |
title_sort |
bandwidth and gain enhancement of composite right left handed metamaterial transmission line planar antenna employing a non foster impedance matching circuit board |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2021-04-01 |
description |
Abstract The paper demonstrates an effective technique to significantly enhance the bandwidth and radiation gain of an otherwise narrowband composite right/left-handed transmission-line (CRLH-TL) antenna using a non-Foster impedance matching circuit (NF-IMC) without affecting the antenna’s stability. This is achieved by using the negative reactance of the NF-IMC to counteract the input capacitance of the antenna. Series capacitance of the CRLH-TL unit-cell is created by etching a dielectric spiral slot inside a rectangular microstrip patch that is grounded through a spiraled microstrip inductance. The overall size of the antenna, including the NF-IMC at its lowest operating frequency is 0.335λ0 × 0.137λ0 × 0.003λ0, where λ0 is the free-space wavelength at 1.4 GHz. The performance of the antenna was verified through actual measurements. The stable bandwidth of the antenna for |S11|≤ − 18 dB is greater than 1 GHz (1.4–2.45 GHz), which is significantly wider than the CRLH-TL antenna without the proposed impedance matching circuit. In addition, with the proposed technique the measured radiation gain and efficiency of the antenna are increased on average by 3.2 dBi and 31.5% over the operating frequency band. |
url |
https://doi.org/10.1038/s41598-021-86973-x |
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