Rapid Method for Finding Faulty Elements in Antenna Arrays Using Far Field Pattern Samples

A simple and fast technique that allows a diagnosis of faulty elements in antenna arrays, that only needs to consider a small number of samples of its degraded far-field pattern is described. The method tabulates patterns radiated by the array with 1 faulty element only. Then, the pattern correspond...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2009-06, Vol.57 (6), p.1679-1683
Main Authors: Rodriguez-Gonzalez, J.A., Ares-Pena, F., Fernandez-Delgado, M., Iglesias, R., Barro, S.
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna radiation patterns
Antennas
Applied sciences
Arrays
Degradation
Exact sciences and technology
Far fields
Fault diagnosis
Genetic algorithms
Linear antenna arrays
Mathematical analysis
Mathematical models
Measurement errors
Mutual coupling
phase-array antennas
Radar antennas
Radiocommunications
Telecommunications
Telecommunications and information theory
Testing
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Description
Summary:A simple and fast technique that allows a diagnosis of faulty elements in antenna arrays, that only needs to consider a small number of samples of its degraded far-field pattern is described. The method tabulates patterns radiated by the array with 1 faulty element only. Then, the pattern corresponding to the configuration of failed/unfailed elements under test is calculated using the error-free pattern and the patterns with 1 faulty element. The configuration with the lowest difference between the calculated and the degraded patterns is selected. Comparison of the performance of this method using an exhaustive search and a genetic algorithm for an equispaced linear array of 100 lambda/2-dipoles is shown. Mutual coupling as well as noise/measurement errors in the pattern samples were considered in the numerical analysis.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2009.2019915