Multibeam antennas with polarization and angle diversity

Author

Popovic, Darko ; Popovic, Zoya

Author_Institution

Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA

Volume

50

Issue

5

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

651

Lastpage

657

Abstract

A 10-GHz discrete cylindrical lens array with multiple beams is designed and characterized as a receiving angle-diversity array for wireless communications in a multipath environment. The array also has dual-orthogonal polarization and therefore built-in polarization diversity. The array is designed for wide-angle scanning between -45° and 45° and measured scanning patterns are presented. The polarization isolation between the two channels is about 30 dB at boresite and about 10 dB for a 30° scan angle. The addition of the lens array at the very front end of a link shows significant reduction of multipath fading peak-to-null ratio

Keywords

antenna radiation patterns; diversity reception; electromagnetic wave polarisation; fading channels; lens antennas; microwave antenna arrays; multibeam antennas; multipath channels; receiving antennas; 10 GHz; SHF; boresite; discrete cylindrical lens array; dual-orthogonal polarization; measured scanning patterns; multibeam antennas; multipath environment; multipath fading peak-to-null ratio reduction; multipath fading reduction; multiple beams; polarization diversity; polarization isolation; receiving angle-diversity array; wide-angle scanning; wireless communications; Antenna arrays; Diversity methods; Feeds; Focusing; Holographic optical components; Lenses; Optical arrays; Polarization; Receiving antennas; Surface waves;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2002.1011231

Filename

1011231