Crosstalk Suppression by Using Aluminium and Copper Shield in UAV Cable

Crosstalk is a significant concern in the design of cabling systems for UAVs (Unmanned Aerial Vehicles). Some factors such as, cable length, type, spacing between cables, and cable layout must be carefully considered to mitigate electromagnetic interference. This study examines various types of cables and the effect of spacing between cables, as well as the effect of cable shields using aluminum and copper to see their effectiveness in reducing crosstalk. Crosstalk levels were measured at both the near end (NEXT) and far end (FEXT) of the cables through CST Cable simulations in the frequency range of 1 to 900 MHz. Results indicate that increased spacing between cables can reduces crosstalk, with higher levels observed at the NEXT compared to the FEXT. Additionally, twisting cables can reduce NEXT crosstalk by up to 19 dBv at a 0 cm distance from the source cable. Furthermore, shielded cables significantly reduce crosstalk above frequency 300 MHz, with copper foil providing a 10 dBv reduction compared to unshielded cables and a 2 dBv reduction over aluminum foil.