Coaxial two-stage reentrant pulse forming line

Abstract

The invention discloses a coaxial two-stage reentrant pulse forming line so as to solve the technical problem of structural complexity of an existing pulse forming line. The technical scheme includes that the coaxial two-stage reentrant pulse forming line comprises a reentrant forming line segment, a main switch segment and a load segment. The reentrant forming line segment comprises four metal cylinders identical in length, a rear end cover and an insulated filling dielectric, the diameters of the four metal cylinders decrease gradually, and the four metal cylinders include an external forming line cylinder, a middle forming line cylinder, a fourth forming line cylinder and an internal forming line cylinder, are sleeved together to form an integrated coaxial structure and form three pulse forming lines including an external line, a middle line and an internal line. The coaxial two-stage reentrant pulse forming line has the advantages that output pulse width of the coaxial two-stage reentrant pulse forming line is three times of that of a coaxial line in the background art, and matched output impedance of the coaxial two-stage reentrant pulse forming line is three times of external line wave impedance, so that energy transmission efficiency of a high-resistance load can be improved; in order to achieve the same output pulse width, the length of the coaxial two-stage reentrant pulse forming line is one third of that of each of a coaxial single line and a coaxial Blumlein line; the coaxial two-stage reentrant pulse forming line is simple in structure.

Description

technical field [0001] The invention relates to a pulse forming line, in particular to a coaxial two-stage reentrant pulse forming line. Background technique [0002] In the field of pulse power technology, there are many methods for generating high-voltage pulses, among which single coaxial line (document 1: S.D.Korovin, V.V.Rostov, S.D.Polevin, Pulsed power-driven high-power microwave sources, Proceedings of the IEEE , Vol.92, No.7; July 2004) and twin coaxial lines (also known as coaxial Blumlein lines) (document 2: J.C.Martin, Nanosecond pulse techniques, Proceedings of the IEEE, Vol.80, No.6; June 1992) is the most common pulse-forming line. The dielectric filled in the pulse-forming line is usually high-pressure gas or transformer oil, and the ratios of the pulse-forming width to the length of the forming line are 6.7ns / m and 10ns / m, respectively. The traditional coaxial single-wire and double-wire structures are simple, the insulation is easy and reliable, and the o...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the complex structure of the existing pulse forming line, the present invention provides a coaxial two-stage reentrant pulse forming line

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