Solbach, Klaus; Angenendt, Stefanie:
Four-Square Phased Array for Multi-Beam Applications using Novel Matrix Feed
2007
In: European Microwave Conference (EuMC)
Artikel/Aufsatz in Zeitschrift / Fach: Elektrotechnik
Titel:
Four-Square Phased Array for Multi-Beam Applications using Novel Matrix Feed
Autor(in):
Solbach, Klaus im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen; Angenendt, Stefanie
Erscheinungsjahr
2007
Erschienen in:
European Microwave Conference (EuMC)
WWW URL

Abstract:

Modern communications systems use multi-beam antennas for the sectorization of 360° azimuthal coverage or diversity and MIMO concepts. One suitable antenna realization is based on the phased array principle, where four elements placed at the edges of a square are required in order to form four overlapping beams in azimuth. In its basic form, excitation phases of 0°, 90° and 180° are required for beam forming. The paper presents a novel multi-beam matrix network created by four 90°-hybrid couplers which realizes the required excitation for four beams spaced by 90° in the azimuth plane. A proof-of-concept antenna was designed which employs miniature surface-mount couplers in a microstrip feed network and uses vertical monopole radiators.