Abstract: An uneven dual-output pulse generator was presented in this paper, whose pulse forming line consisted of three coaxial cylinders and a build-in Tesla transform. Such a generator possessed two uneven output ports with high and low wave impedance each. The polarity of the dual-output pulses was opposite, and the pulse amplitude of the high-impedance output port was higher relatively. A pulse splitting-delaying device was connected with the low-impedance output port to realize accordant impedance at output terminals, and multiplex pulses with a low and even amplitude were obtained. One design example of the UWS (ultra-wide spectrum) pulse-series generator was given. After being delayed transmission multiplex output pulses of such a generator could form combined pulse which composed of first high-amplitude pulse and following even-amplitude pulses.