Minimizing the interference coupling into standard coaxial cables with braided shield

In this contribution, the investigations to minimize the interference coupling into standard coaxial cables with braided shield are described. Considering the transfer impedance as the coupling describing quantity, it is shown that reducing the coverage of the cable RG213/U by 25% results in lower values of the transfer impedance of approx. 20 dB within the important frequency range between 1 and 100 MHz.