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Analyzing and Calculating Isolation between Antennas on Airplane Wireless System

The coupling of antennas is the major manner of electromagnetic interference (EMI) among wireless systems. Isolation between antennas is a primary parameter for electromagnetic compatibility (EMC) on airborne platform. Airborne platform is a complicate and large dimension object, and it is difficult to measure the isolation between antennas in whole working wideband. Based on the analysis and discussion of practical model, the isolation between two antennas is calculated by FEM and MoM separately. And the numerical results are compared with measurements and employed to speculate statement in whole frequency band in this paper. Then change of isolation is analyzed following the different of distance between two antennas.