KU - BAND PULSED MAGNETRON.
Final rept. no. 1, 1 May-30 Nov 65,
LITTON INDUSTRIES SAN CARLOS CALIF ELECTRON TUBE DIV
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The Litton Industries type L-3496 magnetron, Ku-band, 1 kw peak, .001 duty, tunable, 16,000 to 16,500 Mc, was redesigned to eliminate a discontinuity in the rf pulse which occurred near the operating point. Complete electrical design calculations are given. A series of tubes was built and improvements beyond the design calculations were introduced in the areas of anode impedance, magnetic field shape, cathode structure and output coupling. Performance results of 29 tubes and life test results of six tubes are given. The rf pulse discontinuity problem was eliminated and the useful life of the L-3496 magnetron was increased from tens of hours to hundreds of hours. The improved magnetron is identified as type L-3496A. Recommendations are made to incorporate mechanical improvements necessary for consistent high yield fabrication. Author
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