NDLI: A new family of MM wave TWTs for telecom and ECM applications

Content Provider	IEEE Xplore Digital Library
Author	Thouvenin, Ph. Kuntzmann, J.C. Laurent, A. Thaler, Y.
Copyright Year	2000
Description	Author affiliation: Thomson Tubes Electron., Velizy Villacoublay, France (Thouvenin, Ph.)
Abstract	Twenty years after the first breadboard activities, the development of MM wave TWTs operating from 18 to 60 GHz is booming again, stimulated by the growth of multimedia satcom services and the high data rate upgrade of military telecommunication networks. Recent design activities at Thomson Tubes Electroniques (TTE) have borne in particular on the qualification of a 40 W Ka band microTWT and on the development of a 120 W EHF band TWT: (a) the 40 W Ka band model features small size (7 inches), broad instantaneous bandwidth (25.5 to 31.5 GHz) and high efficiency (35%). A small series of tubes has been manufactured in 1999, from which one unit has been successfully qualified. A life test is running on two TWTs: at 1005/spl deg/Cb cathode temperature, the RF output power decrease is roughly 1.5% after 6500 operating hours. (b) The 120 W EHF dual stage collector TWT is currently in development. A first breadboard has delivered the expected power level (120 to 130 W from 43.5 to 45.5 GHz) with the same beam parameters as the 80 W model currently in production. After minor design adjustments in gun and collector areas, two prototypes have been built and will soon be tested. Design activities have started on upgrading several other MM wave products (higher performance or lower cost). These include a 160 W Ka band dual stage collector model and an 80 W K+Ka band TWT.
File Size	177130
File Format	PDF
ISBN	0780359879
DOI	10.1109/OVE:EC.2000.847413
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-05-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Telecommunications Electrochemical machining Electronic countermeasures Military communication Electron tubes Qualifications Bandwidth Manufacturing Life testing Cathodes
Content Type	Text
Resource Type	Article

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