Multifeed EBG Dual-Band Antenna for Spatial Mission | Zendy

Ahmad Kanso | Zendy; R. Chantalat | Zendy; Umair Naeem | Zendy; Hassan Chreim | Zendy; M. Thevenot | Zendy; Stéphane Bila | Zendy; T. Monediere | Zendy

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Multifeed EBG Dual-Band Antenna for Spatial Mission

Author(s) -

Ahmad Kanso,

R. Chantalat,

Umair Naeem,

Hassan Chreim,

M. Thevenot,

Stéphane Bila,

T. Monediere

Publication year - 2011

Publication title -

international journal of antennas and propagation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.282

H-Index - 37

eISSN - 1687-5877

pISSN - 1687-5869

DOI - 10.1155/2011/190358

Subject(s) - multi band device , optics , reflector (photography) , phase center , antenna (radio) , radiation pattern , offset (computer science) , physics , acoustics , engineering , electrical engineering , computer science , light source , programming language

We present the design of a multibeam reflector antenna fed by a multifeed dual-band electromagnetic band gap (EBG) antenna to achieve a high-gain multispot coverage for space applications. First, we design a dual-band EBG antenna in monofeed configuration. This antenna is composed of double-layer frequency selective surfaces (FSSs) arranged in the longitudinal direction and a square horn as a feed. Then, the same antenna in multifeed configuration is studied, and the results are compared to those obtained in monofeed configuration in order to emphasize the problem of coupling, generally encountered in multifeed configuration. Consequently, filters are used in order to reduce the parasitic interferences and obtain good radiation characteristics. As shown in this paper, the same EBG phase center is obtained in both frequency bands. Finally, we have studied the whole system composed of the offset reflector and the multifeed EBG dual-band antenna. An edge of coverage (EOC) gain higher than 42 dBi and sidelobes levels lower than −18 dBi are obtained over all spots

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