NDLI: 1 kHz rep-rate operation of a spark-gap switched gyromagnetic nonlinear transmission line array

Content Provider	IEEE Xplore Digital Library
Author	Johnson, J. Reale, D. Barnett, D. Garcia, R. Cravey, W. Parson, J. Neuber, A. Dickens, J. Mankowski, J.
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Texas Tech Univ., Lubbock, TX, USA (Johnson, J.; Reale, D.; Barnett, D.; Garcia, R.; Cravey, W.; Parson, J.; Neuber, A.; Dickens, J.; Mankowski, J.)
Abstract	This paper details the design, fabrication and performance of a coaxial ferrimagnetic nonlinear transmission line (NLTL), four element array, high power microwave (HPM) system operated at a 1 kHz repetition rate. Prime power is delivered from an 802L TDK Lambda power supply which charges a 5.2 nF capacitor bank up to -40 kV. The capacitors are discharged through a center pin trigatron spark gap. The trigger generator is optically isolated and battery powered for noise immunity and portability. It produces a 20 kV positive polarity pulse with a 20 ns risetime. The high dV/dt (1 kV/ns) is desirable to reduce jitter inherent to spark-gap switching. After the spark-gap switch has closed, the pulse is split four ways. The four pulses propagate through four adjustable delay lines for synchronization of the individual outputs. The four delay lines connect directly into four 76 cm NLTLs with NiZn ferrites where $SF_{6}$ is the insulating dielectric. Each NLTL is terminated into a custom fabricated, Rexolite-filled, TEM horn antenna via a zipper balun. Lastly, a LabVIEW based control system automates the whole system using a National Instruments cRIO controller. Experimental observations will include in-line D-dot measurements of voltage waveforms and radiated D-dot field measurements.
Starting Page	1
Ending Page	4
File Size	611017
Page Count	4
File Format	PDF
e-ISBN	9781479984039
DOI	10.1109/PPC.2015.7296894
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical switches Capacitors Impedance matching Probes Magnetic fields Arrays
Content Type	Text
Resource Type	Article

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