Fast high-voltage pulse generator with nonlinear transmission line for high repetition rate operation

Pulse sharpening and RF generation using nonlinear transmission lines

“…8 by the blue line. The input pulse risetime is of the order of 2.5 μs and the compressed output pulse has a rise time of about 1.8 μs, giving a reduction of about 700 ns, according to (2). Also, observe in Fig.…”

“…Studies have shown that NLETLs reduce rise time by pulse sharpening, which can be useful in high-speed sampling and timing systems [1]. Using ceramic capacitors, Ibuka et al [2] have built a NLTL and employed the pulse-sharpening scheme in a CO 2 laser power supply. The pulse applied on the line had 20 kV of amplitude with rise time of 500 ns, and the output pulse rise-time obtained was less than 120 ns, giving a rise time reduction of about 380 ns [2].…”

“…Using ceramic capacitors, Ibuka et al [2] have built a NLTL and employed the pulse-sharpening scheme in a CO 2 laser power supply. The pulse applied on the line had 20 kV of amplitude with rise time of 500 ns, and the output pulse rise-time obtained was less than 120 ns, giving a rise time reduction of about 380 ns [2]. Pulse sharpening is based on wave propagation in a nonlinear medium.…”

Characterization of dielectric properties of commercial ceramic capacitors for pulsed power applications

“…This technique is largely used in circuits that require pulses with higher amplitudes (several kV) and output rise time in the range of 10-100 ns and where the use of fast solid sate switches are not recommended because of the high-voltage environment. A more specific application for this case can be found in [10], in which a 20 kV NLTL pulse compression circuit built with 2 kV/4.7 nF capacitors from Murata was used to feed a TEA-CO 2 Laser. They described that the NLTL compressed an input pulse of 20 kV/ 500 ns into an output pulse of 20 kV/120 ns for laser activation.…”

An MMIC Pulse Generator Using Dual Nonlinear Transmission Lines

“…The coupled system of ordinary differential equations based on Kirchoff's law outlined in [11] are used in studying the nonlinear behaviors of the NLTL. However, a simple and intuitive way often used is to check the phase velocity dependence on the diode capacitance, which is, in turn, voltage dependent, as shown in (1) where is the unit section length.…”