DocumentCode
925349
Title
Reduced sidelobe four-beam antenna array fed by modified Butler matrix
Author
Wincza, K. ; Gruszczynski, S. ; Sachse, K.
Author_Institution
Inst. of Telecommun., Wroclaw Univ. of Technol., Poland
Volume
42
Issue
9
fYear
2006
fDate
4/27/2006 12:00:00 AM
Firstpage
508
Lastpage
509
Abstract
A novel four-beam antenna array fed by a modified 4×8 Butler matrix is proposed. Four 180° directional couplers in conjunction with a 4×4 Butler matrix are applied to provide a tapered excitation of a linear eight-element switched-beam antenna array. Sidelobes as low as -20 dB for all four beams have been both theoretically and experimentally achieved. A proposed technique of antenna element rotation simplifies the design of a feeding network.
Keywords
antenna feeds; antenna radiation patterns; directional couplers; linear antenna arrays; multibeam antennas; antenna element rotation; directional couplers; eight-element antenna array; feeding network; feeding network design; four-beam antenna array; linear antenna array; modified Butler matrix; reduced sidelobe antenna array; switched-beam antenna array; tapered excitation;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20060313
Filename
1628517
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