Array Antenna TRM Failure Compensation Using Adaptively Weighted Beam Pattern Mask Based on Genetic Algorithm

Digital beamforming array antenna systems are installed outdoors for long periods of time. When a transmitter/receiver module (TRM) error occurs, the beam pattern is distorted. In this case, resynthesizing the optimal beam pattern with all functioning TRMs, without failed TRM, is preferable to TRM r...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters Vol. 11; pp. 18 - 21
Main Authors: Jung-Hoon Han, Sang-Ho Lim, Noh-Hoon Myung
Format: Journal Article
Language:English
Published: IEEE 2012
Subjects:
Adaptive weighting factor
Antenna arrays
array antenna
Arrays
beam pattern mask
beam pattern resynthesis
Chebyshev approximation
Convergence
digital beamforming
genetic algorithm (GA)
Genetic algorithms
Transmission line measurements
transmitter/receiver module (TRM) failure compensation
ISSN:1536-1225, 1548-5757
Online Access:Get full text
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Summary:Digital beamforming array antenna systems are installed outdoors for long periods of time. When a transmitter/receiver module (TRM) error occurs, the beam pattern is distorted. In this case, resynthesizing the optimal beam pattern with all functioning TRMs, without failed TRM, is preferable to TRM repair or replacement. This letter proposes an algorithm for resynthesizing the optimal beam pattern from the distorted beam pattern using an adaptively weighted beam pattern mask based on a genetic algorithm. The proposed algorithm allows improved resynthesis flexibility and accuracy and increased calculation speed. Several beam patterns are also examined utilizing the proposed algorithm. The proposed TRM failure compensation algorithm provides a cost-effective and less time-consuming solution for repairing the digital beamforming antenna systems.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2011.2181475