The isolation between airborne short wave antennas of a Boeing 707 320B aircraft has been calculated and analyzed using FDTD Method after modeling aircraft and short wave antenna by B-spline Method. This research can provide data for the further study of the short wave antenna's impedance character, mutual interference between short wave communication and other electronic equipment, it can play an important role in aircraft EMC analysis and design. The whole method can be easily used in the analysis of characteristics of airborne microwave electronic equipment.
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