Research on electromagnetic environment effects for typical coaxial line

The continuous and ultra wide-band irradiation effects on coaxial line were researched in this paper. The experiment system and method are introduced. Comparing the UWB and CW irradiation experiment results, the coaxial cable response exists frequency selecting characteristic to electromagnetic irradiation, the peak value of terminal load response voltage appears at series of discrete frequency points, where test cable relative length equals to semi-integer.The coupling mechanism of coaxial cable is analyzed, when one terminal is suited, another terminal load response has nonlinear increase with the increase of the resistance value. The voltage and internal resistance of equivalent induced voltage source obey the theory of partial voltage. A equivalent circuit is established and it´s veracity is well.