NDLI: Broadband, high power, coaxial arc discharge switch

Content Provider	IEEE Xplore Digital Library
Author	Tetenbaum, S.J. Campbell, D.L. Moats, R.R.
Copyright Year	1961
Description	Author affiliation: Sylvania Electric Products, Mountain View, California (Tetenbaum, S.J.)
Abstract	This paper describes a new type of microwave coaxial gas switch tube which utilizes an electronically controlled pulsed hydrogen arc discharge. The device fires in a few tenths of a microsecond and recovers in a time of the order of 10 microseconds. It covers a frequency range extending from below 1 Gc/s to above 4 Gc/s. The tube operates over a wide range of pulsed peak input powers, from microwatts to hundreds of kilowatts, depending upon the particular application. Its unfired insertion loss and its arc loss are of the order of 0.1 db and 1 db respectively and its leakage isolation exceeds 50 db. The tube consists of a section of 7/8" coaxial line sealed off at each end by ceramic windows. Portions of the inner and outer conductors are gridded and together with a heated cathode and an anode provide an electrode structure similar to that in conventional hydrogen thyratrons. A number of tubes utilizing different electrode structures have been built and tested and are described. Switching is accomplished by creating an arc between the electrodes. Upon application of a trigger voltage, a previously charged pulse forming network discharges through the tube, The resultant electron density is of the order of $10^{12}per$ $cm^{3}and$ acts like a short circuit to the incident microwaves. The results of measurements of the switch's firing time, recovery time, insertion loss, leakage, holdoff power and noise figure at both L and S-bands are presented and discussed.
Starting Page	72
Ending Page	74
File Size	116082
Page Count	3
File Format	PDF
DOI	10.1109/IEDM.1961.187249
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1961-10-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coaxial components Arc discharges Switches Electrodes Electromagnetic heating Electron tubes Hydrogen Insertion loss Microwave devices Fires
Content Type	Text
Resource Type	Article

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