Title :
Multibeam antennas with polarization and angle diversity
Author :
Popovic, Darko ; Popovic, Zoya
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
fDate :
5/1/2002 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.1011231
