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Compact Single‐Layer Traveling‐Wave Antenna DesignUsing Metamaterial Transmission Lines
Author(s) -
Alibakhshikenari Mohammad,
Virdee Bal Singh,
Limiti Ernesto
Publication year - 2017
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/2017rs006313
Subject(s) - metamaterial , metamaterial antenna , transmission line , bandwidth (computing) , physics , electric power transmission , capacitor , antenna (radio) , ground plane , electrical engineering , optoelectronics , optics , materials science , acoustics , radiation pattern , telecommunications , computer science , engineering , slot antenna , voltage
This paper presents a single‐layer traveling‐wave antenna (TWA) that is based on composite right/left‐handed (CRLH)‐metamaterial (MTM) transmission line (TL) structure, which is implemented by using a combination of interdigital capacitors and dual‐spiral inductive slots. By embedding dual‐spiral inductive slots inside the CRLH MTM‐TL results in a compact TWA. Dimensions of the proposed CRLH MTM‐TL TWA is 21.5 × 30.0 mm 2 or 0.372λ 0 × 0.520λ 0 at 5.2 GHz (center frequency). The fabricated TWA operates over 1.8–8.6 GHz with a fractional bandwidth greater than 120%, and it exhibits a peak gain and radiation efficiency of 4.2 dBi and 81%, respectively, at 5 GHz. By avoiding the use of lumped components, via‐holes or defected ground structures, the proposed TWA design is economic for mass production as well as easy to integrate with wireless communication systems.