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International Journal of Antennas and Propagation
Volume 2015 (2015), Article ID 795323, 13 pages
http://dx.doi.org/10.1155/2015/795323
Research Article

A Novel Inversion Method of Manufacturing Flaws in the Packaging of Conformal Load-Bearing Antenna Structure

1Key Laboratory of Electronic Equipment Structure Design, Xidian University, Xi’an 710071, China
2The State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China

Received 25 October 2014; Revised 5 January 2015; Accepted 12 January 2015

Academic Editor: Stefano Selleri

Copyright © 2015 P. Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Composite material is widely used in the conformal load-bearing antenna structure (CLAS), and the manufacturing flaws in the packaging process of the CLAS will lead to the degradation of its wave-transparent property. For this problem, a novel inverse method of the flaw’s dimension by antenna-radome system’s far field data has been proposed. Two steps are included in the inversion: the first one is the inversion from the far filed data to the transmission coefficient of the CLAS’s radome; the second one is the inversion from the transmission coefficient to the flaw’s dimension. The inversion also has a good potential for the separable multilayer composite material radome. A 12.5 GHz CLAS with microstrip antenna array is used in the simulation, which indicates the effectiveness of the novel inversion method. Finally, the error analysis of the inversion method is presented by numerical simulation; the results is that the inversed error could be less than 10%, if the measurement error of far field data is less than 0.45 dB in amplitude and ±5° in phase.