Electro-Magnetic Band-Gap feed overlapping apertures for multi-beam antennas on communication satellites

Author

Caille, Gerard ; Chiniard, Renaud ; Thevenot, M. ; Chreim, Hassan ; Arnaud, Elise ; Monediere, T. ; de Maagt, Peter ; Palacin, Baptiste

Author_Institution

Thales Alenia Space, Toulouse, France

fYear

2014

fDate

6-11 April 2014

Firstpage

963

Lastpage

967

Abstract

An `EBG antenna (Electro-Magnetic Band Gap)´ is built with a semi-reflective screen over a set of horns feeding a reflector. A clever application of the partial spreading of the electro-magnetic field in such a structure is to provide `overlapped radiating apertures´, which generate `overlapped beams´ when feeding a reflector. This is a unique single-antenna solution, fitting with multi-beams missions from satellite which require low gain ripple over a regional coverage, e.g. for high data-rate communication in Ka-band. A prototype has been optimised and built, as a co-operation between Thales Alenia Space France & XLIM/Antenna Lab, supported by space agencies ESA & CNES. Adding a very light meanderline polariser (honeycomb based) transforms the alternated orthogonal linear polarisations into orthogonal circular ones, coping with most recent missions.

Keywords

array signal processing; microwave antennas; multibeam antennas; photonic band gap; reflector antennas; satellite communication; EBG antenna; Ka-band; alternated orthogonal linear polarisations; communication satellites; electromagnetic band gap; electromagnetic band-gap feed overlapping apertures; multibeam antennas; single-antenna solution; Antenna feeds; Antenna measurements; Metamaterials; Periodic structures; Reflector antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EuCAP), 2014 8th European Conference on

Conference_Location

The Hague

Type

conf

DOI

10.1109/EuCAP.2014.6901923

Filename

6901923