Hundred-nanosecond-level trapezoidal wave pulse forming network and design method

Abstract

The invention discloses a hundred-nanosecond-level trapezoidal wave pulse forming network and a design method. The network circuit structure comprises a shaping inductor and no more than three LC series branches, and the LC series branches are connected in parallel and then connected to the shaping inductor in series. The capacitor is a pulse film inductor; and capacitance and inductance values are determined through a predetermined method. The design method comprises the steps of building a network circuit structure and determining an initial value of a component, simulating the circuit, and adjusting the parameters of the component according to the output waveform of the circuit. The network structure is simple, the network level is low, the output waveform quality is good, and the research on the high-power microwave technology is facilitated. The design steps are high in operability and wide in application range. The miniaturization of the pulse device can be realized, and the service life of the network is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of pulse power, in particular to a trapezoidal pulse forming network with a pulse width of hundreds of nanoseconds and a design method thereof. Background technique [0002] Pulse power technology is a technology that stores electrical energy in advance and quickly releases it to the load in a short period of time. It is the basis of high-power microwave technology and has important military and civilian values. Undoubtedly, in order to exert practical value, the miniaturization of the pulse power device must be realized. [0003] In the application of high-power microwaves, pulse power devices are usually required to generate pulse widths on the order of hundreds of nanoseconds, fast rising edges, and wide flat tops, which are ideal square waves. But a complete square wave is difficult to achieve, and a certain degree of trapezoidal wave can be accepted. Conventional pulse power devices use bulky coaxial ...

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Problems solved by technology

For example, "Design and Experimental Research of Pulse Forming Network · Wang Qingfeng · 2009", "Design of Linear Transformer Driving Source Based on Blumlein Pulse Forming Network · Li Mingjia · 2011", "Design of Optical Switch Cascaded Blumlein Type Pulse Network · Ma Xun · 2013", "Solid Pulse Forming Network Marx Pulse Generator · Li Zhiqiang · 2014", but the ceramic capacitor generates a lot of heat, and the lifespan is relatively short when working at a repetition rate under pulse high voltage, and the damage rate is high

[0005] From the above analysis, it can be known that based on the classical theory, if the artificial line network is used to fit the square wave pulse, the network series will not be too low, and once the number of capacitors is large , considering the size, only ceramic capacitors can be used. This kind of network design is not difficult, but the life span is low when the high-voltage repetition frequency works for a long time.

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