DocumentCode :
986981
Title :
Design and Analysis of Broadband Beamspace Adaptive Arrays
Author :
Liu, Wei ; Wu, Renbiao ; Langley, Richard J.
Author_Institution :
Univ. of Sheffield, Sheffield
Volume :
55
Issue :
12
fYear :
2007
Firstpage :
3413
Lastpage :
3420
Abstract :
A beamspace adaptive planar array for broadband beamforming is proposed based on the frequency invariant beamforming technique. A detailed analysis is provided for both the linear arrays and the planar arrays, where two conditions are imposed: the beams should exhibit a good frequency invariant property and be linearly independent. These two conditions are not independent and there is a tradeoff between them. To improve the interference cancellation capability of the array, we may need to sacrifice the frequency invariant property to some degree for more linearly independent beams. A sufficient condition for the linear independence of the beams is derived with a DFT matrix based design proposed. Simulation results verified our analysis and the proposed method.
Keywords :
adaptive antenna arrays; array signal processing; broadband antennas; DFT matrix; broadband beamspace adaptive arrays; frequency invariant beamforming technique; Adaptive arrays; Antenna arrays; Array signal processing; Broadband antennas; Convergence; Frequency; Narrowband; Planar arrays; Sufficient conditions; Transmission line matrix methods; Adaptive arrays; antenna arrays; beam steering; broadband communication;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2007.910322
Filename :
4388134
Link To Document :
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