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FDTD Analysis of the Mutual Coupling Between Closely Placed IFAs  

Ji, Ki-Man (체계종합팀)
Lee, Soo-Jin (체계종합팀)
Chung, Eui-Seung (체계종합팀)
Publication Information
Aerospace Engineering and Technology / v.9, no.1, 2010 , pp. 106-115 More about this Journal
Abstract
Because of space limitations, interferences between antennas of the KSLV-I communication systems occur and their effects become worse during all sorts of tests such as the flight test using a light plane. In this paper, coupled signal magnitude is calculated using the FDTD method. The theory of the FDTD, absorbing boundary condition, source input technique, and post processing of data are explained. The calculated coupling factor between two IFAs, which have 2 GHz resonance frequency and placed 5 cm apart, is -12.7 dB. Applied coupling calculation method can be effectively used for KSLV-I performance analysis, subsystem design, antenna arrangement, and communication link budget for the next space launch vehicle.
Keywords
antenna; electromagnetic field; FDTD; ABC; communication link; PML;
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