A compact microstrip crossover using NRI-TL metamaterial lines

Muhammad Ali Babar Abbasi; Marco A. Antoniades; Symeon Nikolaou

doi:10.1002/mop.31458

A compact microstrip crossover using NRI-TL metamaterial lines

Muhammad Ali Babar Abbasi^*, Marco A. Antoniades, Symeon Nikolaou

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

215 Downloads (Pure)

Abstract

A practical implementation of a miniaturized crossover is presented using negative-refractive-index transmission-line (NRI-TL) metamaterial lines. NRI-TL metamaterial theory has demonstrated that by loading a conventional transmission line with lumped LC elements, a large phase shift per-unit-length can be achieved. Employing this technique, the conventional microstrip transmission lines in a three-section branch-line coupler crossover are replaced with 90° NRI-TL lines, and thus a compact NRI-TL crossover with an area 47 times smaller than the area of its conventional counterpart is demonstrated. Measured results demonstrate that the proposed NRI-TL metamaterial crossover exhibits a −10 dB |S₁₁| bandwidth of 33% and a |3 dB| |S₃₁| bandwidth of 26% around 1 GHz.

Original language	English
Number of pages	4
Journal	Microwave and Optical Technology Letters
Early online date	02 Oct 2018
DOIs	https://doi.org/10.1002/mop.31458
Publication status	Early online date - 02 Oct 2018

Keywords

crossover coupler
hybrid coupler
metamaterial
Negative-refractive-index transmission-line (NRI-TL)

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

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A Compact Microstrip Crossover Using NRI-TL Metamaterial Lines Accepted author manuscript, 239 KBLicence: Unspecified

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title = "A compact microstrip crossover using NRI-TL metamaterial lines",

abstract = "A practical implementation of a miniaturized crossover is presented using negative-refractive-index transmission-line (NRI-TL) metamaterial lines. NRI-TL metamaterial theory has demonstrated that by loading a conventional transmission line with lumped LC elements, a large phase shift per-unit-length can be achieved. Employing this technique, the conventional microstrip transmission lines in a three-section branch-line coupler crossover are replaced with 90° NRI-TL lines, and thus a compact NRI-TL crossover with an area 47 times smaller than the area of its conventional counterpart is demonstrated. Measured results demonstrate that the proposed NRI-TL metamaterial crossover exhibits a −10 dB |S11| bandwidth of 33% and a |3 dB| |S31| bandwidth of 26% around 1 GHz.",

keywords = "crossover coupler, hybrid coupler, metamaterial, Negative-refractive-index transmission-line (NRI-TL)",

author = "Abbasi, {Muhammad Ali Babar} and Antoniades, {Marco A.} and Symeon Nikolaou",

year = "2018",

month = oct,

day = "2",

doi = "10.1002/mop.31458",

language = "English",

journal = "Microwave and Optical Technology Letters",

issn = "0895-2477",

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T1 - A compact microstrip crossover using NRI-TL metamaterial lines

AU - Abbasi, Muhammad Ali Babar

AU - Antoniades, Marco A.

AU - Nikolaou, Symeon

PY - 2018/10/2

Y1 - 2018/10/2

N2 - A practical implementation of a miniaturized crossover is presented using negative-refractive-index transmission-line (NRI-TL) metamaterial lines. NRI-TL metamaterial theory has demonstrated that by loading a conventional transmission line with lumped LC elements, a large phase shift per-unit-length can be achieved. Employing this technique, the conventional microstrip transmission lines in a three-section branch-line coupler crossover are replaced with 90° NRI-TL lines, and thus a compact NRI-TL crossover with an area 47 times smaller than the area of its conventional counterpart is demonstrated. Measured results demonstrate that the proposed NRI-TL metamaterial crossover exhibits a −10 dB |S11| bandwidth of 33% and a |3 dB| |S31| bandwidth of 26% around 1 GHz.

AB - A practical implementation of a miniaturized crossover is presented using negative-refractive-index transmission-line (NRI-TL) metamaterial lines. NRI-TL metamaterial theory has demonstrated that by loading a conventional transmission line with lumped LC elements, a large phase shift per-unit-length can be achieved. Employing this technique, the conventional microstrip transmission lines in a three-section branch-line coupler crossover are replaced with 90° NRI-TL lines, and thus a compact NRI-TL crossover with an area 47 times smaller than the area of its conventional counterpart is demonstrated. Measured results demonstrate that the proposed NRI-TL metamaterial crossover exhibits a −10 dB |S11| bandwidth of 33% and a |3 dB| |S31| bandwidth of 26% around 1 GHz.

KW - crossover coupler

KW - hybrid coupler

KW - metamaterial

KW - Negative-refractive-index transmission-line (NRI-TL)

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U2 - 10.1002/mop.31458

DO - 10.1002/mop.31458

M3 - Article

AN - SCOPUS:85054188280

JO - Microwave and Optical Technology Letters

JF - Microwave and Optical Technology Letters

SN - 0895-2477

ER -

A compact microstrip crossover using NRI-TL metamaterial lines

Abstract

Keywords

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