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Overmoded GW-class surface-wave microwave oscillator

By: Shkvarunets, A.G.; Vlasov, A.N.; Granatstein, V.L.; Botton, M.; Nusinovich, G.S.; Rodgers, J.C.; Cherepenin, V.A.; Lingze, D.; Abuelfadl, T.M.; Antonsen, T.M., Jr.; Carmel, Y.;

2000 / IEEE

Description

This item was taken from the IEEE Periodical ' Overmoded GW-class surface-wave microwave oscillator ' Results of theoretical and experimental studies of a GW-class, large diameter microwave oscillator are presented. The device consists of a large cross-section (overmoded), slow-wave structure with a unique profile of wall radius specifically designed to support surface waves and to provide a strong beam-wave coupling at moderate voltage (500 kV), an internal adjustable microwave reflector, a coaxial microwave extraction section, and a coaxial magnetically insulated field emission electron gun. In preliminary experiments carried out at 8.3 GHz, the power level exceeding 0.5 GW and efficiency of 15% have been measured calorimetrically.