Ultra-Thin UHF Broadband Antenna on a Non-Uniform Aperiodic (NUA) MetaSurface

Author

Chamok, Nowrin ; Anthony, Theodore K. ; Weiss, Steven J. ; Ali, Mohammod

Author_Institution

Dept. of Electr. Eng., Univ. of South Carolina, Columbia, SC, USA

Volume

57

Issue

2

fYear

2015

fDate

Apr-15

Firstpage

167

Lastpage

180

Abstract

A new concept to design ultrathin directional broadband antennas using a nonuniform aperiodic metasurface is introduced. The study and design of the NUA metasurface show that, by employing a decreasing taper for both the metasurface patch and their interelement spacing, broad impedance and pattern bandwidths can be attained. Experimental results show that, with a total thickness of 0.04 of the free space wavelength (corresponding to the lowest frequency of operation), an octave bandwidth can be attained, which is significantly larger compared with existing designs on uniform mushroom electromagnetic band-gap structures.

Keywords

UHF antennas; broadband antennas; directive antennas; photonic band gap; EBG; NUA metasurface; broad impedance; directional antenna design; free space wavelength; interelement spacing; nonuniform aperiodic metasurface; octave bandwidth; pattern bandwidths; ultra-thin UHF broadband antenna; uniform mushroom electromagnetic band-gap structures; Bandwidth; Broadband antennas; Dipole antennas; Metamaterials; Periodic structures; Surface impedance; Ultra wideband antennas;

fLanguage

English

Journal_Title

Antennas and Propagation Magazine, IEEE

Publisher

ieee

ISSN

1045-9243

Type

jour

DOI

10.1109/MAP.2015.2414491

Filename

7087351