Title :
Phase compensation and waveform reshaping of picosecond electrical pulses using dispersive microwave transmission lines
Author :
Qian, Yongxi ; Yamashita, Eikichi
Author_Institution :
Dept. of Electron. Eng., Univ. of Electro-commun., Tokyo, Japan
fDate :
6/1/1991 12:00:00 AM
Abstract :
The phase compensation effect of microwave transmission line dispersion is studied and a simple effective method for reshaping and compressing picosecond electrical pulses generated from photoconductive switches is proposed. It is shown that a piece of a dispersive strip transmission line can be used as a phase equalizer to compensate the phase distortion included in asymmetric pulses, resulting in effective reshaping and compression of these ultrashort pulses. Initial design formulas of the strip transmission lines for this purpose are presented, together with computer simulation results which confirm the theoretical predictions. Experimental results are presented to show the substantial pulse reshaping effect. A comparison between theory and measurement is given
Keywords :
compensation; dispersion (wave); guided electromagnetic wave propagation; pulse shaping circuits; strip lines; waveguide theory; asymmetric pulses; dispersive microwave transmission lines; microstrip lines; phase compensation effect; phase distortion; phase equalizer; photoconductive switches; picosecond electrical pulses; pulse reshaping effect; ultrashort pulses; waveform reshaping; Dispersion; Distributed power generation; Microwave generation; Microwave theory and techniques; Photoconductivity; Pulse compression methods; Pulse generation; Strips; Switches; Transmission line theory;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
