New development around omnidirectional electromagnetic band gap antennas

Author

Freytag, L. ; Pointereau, E. ; Jecko, B.

Author_Institution

IRCOM (CREAPE), CNRS UMR 6615, Limoges, France

fYear

2005

fDate

7-9 March 2005

Firstpage

83

Lastpage

86

Abstract

The omnidirectional electromagnetic band gap (EBG) antenna has already been presented (Freytag, L. et al., 2004 URSI EMTS Int. Symposium on EM Theory, vol.1, p.600, 2004; 2004 IEEE AP-S Int. Symp. vol.1, p.815, 2004). It is composed of a metallic center core surrounded by concentric dielectric tubes. The performance of this new type of EBG antenna is very interesting, with high gain and low side lobes. The gain variations in the azimuth plane are also very low. This antenna is suited to base stations of wireless networks in order to cover large cells with only one antenna. The paper presents the performance that can be obtained with this type of antenna in terms of gain and radiation bandwidth versus EBG materials used. We also give a method to improve the performance; the results obtained with a prototype are presented.

Keywords

antenna feeds; antenna radiation patterns; dipole antennas; directive antennas; microstrip antennas; photonic band gap; 5.8 GHz; antenna directivity; base stations; dielectric tubes; metallic center core; omnidirectional electromagnetic band gap antennas; printed dipole feed; radiation bandwidth; radiation pattern; side lobes; wireless networks; Azimuth; Bandwidth; Base stations; Dielectric materials; Dipole antennas; Frequency; Metamaterials; Performance gain; Periodic structures; Permittivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology: Small Antennas and Novel Metamaterials, 2005. IWAT 2005. IEEE International Workshop on

Print_ISBN

0-7803-8842-9

Type

conf

DOI

10.1109/IWAT.2005.1461008

Filename

1461008