Journal of Xidian University

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Coupling influences of the radar electromagnetic field on the complex transmission line in an aperture cavity

FANG Xiaoxing;ZHU Zhiyu;ZHANG Mingxin;LI Yang   

  1. (School of Electronics and Information, Jiangsu Univ. of Science and Technology, Zhenjiang 212003,China)
  • Received:2015-10-01 Online:2016-12-20 Published:2017-01-19

Abstract:

Aimed at coupling calculation for radar waves and aperture cavity complex TL, a calculation method is proposed based on the MoM, the dyadic Green's function (GF) and mixing of the Π model and Agrawal model. First, the incident electromagnetic field at the aperture of the radar antenna can be obtained by the MoM. Then the MoM-GF hybrid algorithm is used to obtain the equivalent magnetic current in the aperture and the electromagnetic field inside the cavity. Finally, the TL load current response can be calculated with the result of electromagnetic fields and the hybrid TL model of the equivalent Π circuit and Agrawal. Throuth TL simulation results by the BLT equation this method can be validated effectively.

Key words: electromagnetic coupling, apertures cavity, transmission line theory, method of moments, Green's function