Phase Center Study of the Electromagnetic Band Gap Antenna: Application to Reflector Antennas

Author

Menudier, Cyrille ; Chantalat, R. ; Thevenot, M. ; Monediere, T. ; Dumon, P. ; Jecko, B.

Author_Institution

XLIM, Limoges

Volume

6

fYear

2007

fDate

6/29/1905 12:00:00 AM

Firstpage

227

Lastpage

231

Abstract

Recent studies have shown that the electromagnetic band gap (EBG) antenna can be used to feed a reflector, especially to realize multibeam coverage with geostationary satellite. However, it is necessary to evaluate its performances in terms of aperture efficiency to compare this solution to the classical ones. Among all the parameters which contribute to the aperture efficiency, one of the most important is the phase center, which has never been determined for EBG antennas. This is the aim of this letter. After defining a simple method to calculate the phase center of the EBG antennas, the position and the frequency evolution of this parameter will be studied. Then, the performances of such a feed associated with a Side Fed Offset Cassegrain Antenna (SFOCA) will be evaluated and compared with a classical feed for reflector, a Potter horn

Keywords

multibeam antennas; photonic band gap; reflector antenna feeds; EBG; electromagnetic band gap antenna; geostationary satellite; multibeam coverage; phase center study; reflector antennas; side fed offset Cassegrain antenna; Antenna feeds; Antenna radiation patterns; Aperture antennas; Frequency; Horn antennas; Metamaterials; Performance evaluation; Periodic structures; Reflector antennas; Satellite antennas; Aperture efficiency; electromagnetic band gap (EBG) antenna; phase center; side-fed offset cassegrain antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2007.895922

Filename

4167877