Electromagnetic coupling through a row of aircraft windows for frequencies less than 100 MHz

The electromagnetic coupling through the 29 forward windows of a large wide-body commercial aircraft was measured. For frequencies below 60 MHz, the magnetic field transfer function was independent of frequency and decreased as 1r². The transfer function between the aircraft fuselage and the current on vertical cables near the windows was about -90 dB for frequencies between 0.5 and 10 MHz. This corresponds to a cable current of 200 mA for a fuselage current of 6 kA. Above 60 MHz, the magnetic field transfer function increased as it approached the aperture resonance