The nonlinear electric pulses generated by the photoconductive switch are rationally approximated and a mathematical model is established. The transmission characteristics of different waveforms of the nonlinear electric pulses are theoretically derived and numerically solved, and the transmission characteristics of rectangular pulses and trapezoidal pulses with the same center frequency are compared. The results show that the steeper the rising edge and the more horizontal the straight line segment, the closer the transmission characteristics of the nonlinear electric pulse and the rectangular pulse. This conclusion provides a theoretical basis for the wide application of nonlinear photoconductive switches in the field of transmission. Keywords nonlinear electric pulse; maths model; physical principle; numerical solutionAbstract Maths model of nonlinear electric pulse generated by PCSS\'s is built. Transmission Characteristics of various waveforms of it are deduced theoretically and analysised numerically. Compared with rectangle and isosceles trapezoid electric pulses,it is indicated that transmission Characteristics of Nonlinear Electric Pulse is more closer to that of rectangle pulse,when the risetime is shorter and the beeline is more horizontal. Theoretical basis is provided for applications of nonlinear photoconductive switches in the transmission of electromagnetic energy.Key words nonlinear electric pulse; maths model; physical principle; numerical analysis
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