Electromechanical coupling based influence of structural error on radiation and scattering performance of array antennas. Issue 14 (1st July 2017)

• Record Type: Journal Article
• Authors: Wang, Congsi; Wang, Yan; Wang, Wei; Zhou, Jinzhu; Wang, Meng; Wang, Zhihai
• Is Part Of: Electronics letters. Volume 53:Issue 14(2017)
• Page Start: 904
• Page End: 906
• Publication Date: 2017-07-01
• Subjects: radar cross‐sections -- antenna arrays -- electromagnetic coupling -- electromagnetic wave scattering; electromechanical coupling -- structural error -- array antennas -- scattering array factor coupling model -- radar cross section -- RCS -- active phased‐array antenna -- computational complexity; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2017.1072
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A new structure and scattering array factor coupling model, for estimating the effect of element position error of active phased‐array antenna on its radar cross section (RCS) is established, based on the relationship between structural position error and phase difference. The model greatly reduces the computational complexity of the RCS for the evaluation of array antenna performance. Based on the model, the influence of the element position error on the gain and RCS is analysed with the results showing that a reasonable reduction in element position accuracy may effectively decrease the RCS. Thus, the developed model can be applied in engineering to balance the radiation and scattering properties. With the necessary radiation and scattering performance guaranteed, the antenna processing and installation tolerances can be properly relaxed to effectively reduce the calibration difficulty and cost.