Analysis of bandwidth for metamaterial-based zeroth-order resonant antennas

Author

Jang, Seongnam ; Lee, Bomson

Author_Institution

Dept. of Electron. & Radio Eng., Kyung Hee Univ., Yongin, South Korea

fYear

2010

fDate

11-17 July 2010

Firstpage

1

Lastpage

4

Abstract

Recently, there has been intense research on metamaterial-based transmission lines (or RLH-TL). The resonant RLH-TL´s have also been analyzed and applied for zeroth-order resonant (ZOR) antennas in with a good deal of their promising features such as resonance with a very small size. The return loss bandwidths of ZOR antennas reported in these papers and others are narrow (typically less than 10%). The bandwidth has been reported to be the key limiting factor of ZOR antennas. In this paper, the works in are refined through modeling of radiation effects using simple circuit parameters and very convenient design formulas are provided based on them. Besides, we analyze the bandwidth of the ZOR antennas based on the Q-factor considering effects of coupling elements.

Keywords

Q-factor; antennas; equivalent circuits; metamaterials; transmission lines; Q-factor; circuit parameters; metamaterial-based transmission lines; metamaterial-based zeroth-order resonant antennas; Antenna measurements; Antennas; Bandwidth; Capacitance; Equivalent circuits; Transmission line measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE

Conference_Location

Toronto, ON

ISSN

1522-3965

Print_ISBN

978-1-4244-4967-5

Type

conf

DOI

10.1109/APS.2010.5561737

Filename

5561737