Transient emission behavior of leaky section cables for wireless applications

A radiating cable functions both as a transmission line and as an antenna. Thus this cable type can be applied as a radiating respectively receiving antenna for modern communication systems. Although underground communication systems using radiating cables operate worldwide in road tunnels and subways, there is another interesting application for this cable. They can provide multi-band aircraft cabin communications like WLAN, GSM, UMTS, DECT X2X. The system integration process requires detailed information about the radiation and transmission behavior as well as the interference potential of the leaky cable in a large frequency range. Therefore, different, partly novel measurement techniques is presented, which can be used to determine these parameters of the radiating cable. The measurements in the different test sites were carried out in frequency domain respectively in time domain.