Array Antenna Diagnosis from Far Field Data Using the Theory of Characteristic Modes

in this paper, a novel utilization of the theory of characteristic mode (TCM) is presented. We reconstruct the current distribution on an array of \lambda/2 dipole antenna from the known far-field pattern by employing TCM. The main goal of this work is accurate faults detection and calibration of la...

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Bibliographic Details
Main Authors: Kaffash, Sara, Faraji-Dana, Reza, Safavi-Naeini, Safieddin
Format: Conference Proceeding
Language:English
Subjects:
Antenna radiation patterns
Array Antenna
Arrays
Current distribution
Diagnosis
Dipole antennas
Far-Field Pattern
Method-of-Moment (MOM)
Phased arrays
Theory of characteristic mode (TCM)
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Description
Summary:in this paper, a novel utilization of the theory of characteristic mode (TCM) is presented. We reconstruct the current distribution on an array of \lambda/2 dipole antenna from the known far-field pattern by employing TCM. The main goal of this work is accurate faults detection and calibration of large phased array antennas with low computational cost by using their far-field data. The proposed technique is based on decomposing the total radiating field into the orthogonal characteristic far-fields that are Linearly related to characteristic currents of the array antenna. By applying this method, the total current distribution on the antenna can be retrieved with an acceptable accuracy.
ISSN:2473-3555
DOI:10.1109/ANTEM.2018.8572870