EMC analysis for Multi-point grounding cable of aircraft

In a real-life airplane, there are usually a large number of electronic devices and radiation sources. Equipped in this complex electromagnetic environment, the conducting cables always produce serious impact on the electromagnetic performance of the aircraft system. Therefore, it is of importance to investigate the electromagnetic compatibility (EMC) of the cables. To this end, we propose a simple and accurate approach in this paper. With the method, the cables are modeled as Multi-point grounding transmission lines. The surface current on the cables can be obtained by employing the theory of images. Subsequently, the radiation pattern can be efficiently calculated with full-wave algorithm of frequency domain. We propose to give the key points of reducing the electromagnetic radiation of cables with analysing the certain instances. The method is easily implemented and well-suited for the EMC optimization design of aircrafts.