High-directivity antenna using reconfigurable near-zero index metamaterial superstrates

Author

Haixia Liu ; Yingchun Fan ; Kai Zhou ; Long Li ; Xiaowei Shi

Author_Institution

Sch. of Electron. Eng., Xidian Univ., Xi´an, China

fYear

2014

fDate

6-11 July 2014

Firstpage

1546

Lastpage

1547

Abstract

The near-zero refractive index metamaterials (ZIM) have attracted more and more attentions because of their novel properties. In this paper, a theoretical analysis of a patch antenna with different ZIM superstrates has been given, which gives an insight into the mechanism of directivity enhancement using three different ZIM metamaterials as the antenna´s superstrates. It shows that double near-zero (permittivity and permeability are near zero, DNZ) metamaterial superstrate can converge the aperture E-field and H-field of the antenna simultaneously. The increase of 9.2dB of radiation directivity can be obtained.

Keywords

electromagnetic metamaterials; microstrip antennas; permeability; permittivity; refractive index; high-directivity antenna; metamaterial superstrate; near-zero refractive index metamaterials; patch antenna; permeability; permittivity; Antenna radiation patterns; Apertures; Metamaterials; Patch antennas; Permeability; Permittivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE

Conference_Location

Memphis, TN

ISSN

1522-3965

Print_ISBN

978-1-4799-3538-3

Type

conf

DOI

10.1109/APS.2014.6905099

Filename

6905099