Research on the radiation characteristics of pantograph and catenaries´ offline noise

To search for the characteristics of pantograph and catenaries´ offline noise (PCON)in high-speed railway, a mathematics model closed to the PCON is proposed in this paper supportedby measured data. Then the radiated electromagnetic field of PCON is analyzed based on the known signal source. As a result, in the same condition, the energy produced by the PCON is much smaller in far field than that in near field. At the same distance, regardless of near-field or far-field, the trend of field varied with frequency is almost the same which is obvious in the range from 0 to 400Hz.