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Multicriteria optimization by genetic algorithms is considered. Parameters of multiconductor modal filters (MF) are optimized. Optimization with the use of a multicriteria objective function with amplitude and time criteria for matching with the characteristic impedance of 50 Ω is considered. One amplitude, two range-time and one interval-time criteria, as well as the matching criterion are used....
A new method of lay-out of a multilayer PCB for circuits with triple reservation is considered. Simulation of four-conductor structure is performed. In this structure UWB pulse decomposed to 4 pulses with smaller amplitudes. These results demonstrate that the proposed method allows to increase interference immunity of PCB circuits with triple reservation.
The improvement of the protection against ultrashort pulse (USP) through the use of modal filters (MF) is considered. A review of researches dedicated to MFs based on multiconductor microstrip line (MSL) is made. A MF on the basis of a three-conductor MSL is investigated. Optimization of conductors separations in a MF is executed in two ways: heuristic search and genetic algorithm (GA). After optimization...
Importance of research on specific aspects of ultrashort pulse propagation and voltage peak values localization along printed circuit board (PCB) multiconductor bus is highlighted. Simulation of a trapezoidal ultrashort pulse propagating along the conductors of the spacecraft autonomous navigation system bus with a different number of excited conductors and a variation of the whole ultrashort pulse...
Multicriteria optimization by genetic algorithms is considered. We optimize novel devices for the protection against ultrashort pulses referred to as multiconductor modal filters (MF) by means of the decomposition of the pulses into a sequence of smaller pulses. A multicriteria objective function with amplitude and time criteria is formulated. Five amplitude criteria are proposed for the critical...
Importance of the genetic algorithms (GA) usage in the investigation of an ultrashort pulse peak voltage in multiconductor structures of printed circuit boards (PCB) is highlighted. Trapezoidal ultrashort pulse propagation along the conductors of a real PCB multiconductor bus was simulated. Using GA an optimization of the whole ultrashort pulse duration and separately of the rise, top and fall durations...
Paper considers improvement of the protection against ultrashort pulses by means of optimization of parameters of multiconductor microstrip lines. We have obtained three-, four- and live-conductor strip lines which will help to maximize duration of a pulse that will be totally decomposed in these structures. It was achieved by means of equalization of time intervals between decomposition pulses. The...
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