Mutual Coupling Reduction Using EBG in Steering Antennas

In this letter, a dual circular polarized steering antenna for satellite communications in X-band is presented. This antenna consists of printed elements grouped in an array, able to work from 7.25 up to 8.4 GHz in both polarizations: left-handed circular polarization (LHCP) and right-handed circula...

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Veröffentlicht in:	IEEE antennas and wireless propagation letters 2012, Vol.11, p.1265-1268
Hauptverfasser:	Exposito-Dominguez, G., Fernandez-Gonzalez, J.-M, Padilla, P., Sierra-Castaner, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna measurements Antennas Arrays Electromagnetic band-gap (EBG) materials Metamaterials Mutual coupling mutual coupling reduction Periodic structures Steering antennas
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Beschreibung
Zusammenfassung:	In this letter, a dual circular polarized steering antenna for satellite communications in X-band is presented. This antenna consists of printed elements grouped in an array, able to work from 7.25 up to 8.4 GHz in both polarizations: left-handed circular polarization (LHCP) and right-handed circular polarization (RHCP). The module antenna is compact, with narrow beamwidth, and reaches a gain of 16 dBi. It has the capability to steer in elevation to ±10 ° and ±40 ° electronically with a Butler matrix. In order to reduce the mutual coupling between adjacent patches, electromagnetic band-gap (EBG) structures are introduced. These EBGs combine double-layer and edge location via in order to reduce the size, without changing the low-permittivity substrate, and therefore maintaining the high radiation efficiency of the antenna.
ISSN:	1536-1225 1548-5757
DOI:	10.1109/LAWP.2012.2226013