Injection locking of a long-pulse relativistic magnetron

Shien Chi Chen; George Bekefi; Richard J. Temkin

doi:10.1117/12.43481

1 April 1991 Injection locking of a long-pulse relativistic magnetron

Shien Chi Chen, George Bekefi, Richard J. Temkin

Proceedings Volume 1407, Intense Microwave and Particle Beams II; (1991) https://doi.org/10.1117/12.43481
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

The authors report the injection locking results of a long-pulse (200-400 ns) high power (20-30 MW) relativistic magnetron. The cold-cathode magnetron structure is driven by a high power modulator to generate S-band output at 3.3 GHz. Phase-locking with reproducible locked angle is achieved with an injection power ratio as low as 1:200. The locked states are phase stable to within +/- 3 degree(s) during the pulse. Repetition-rated operation at 5 Hz produces average powers higher than single shot systems. Phase locking physics is studied by parametrically scanning the injection frequency and varying the injection power. Important effects due to frequency pushing are identified. The measured locking bandwidth agrees well with a theory which takes into account frequency pushing effects. The measured dependence of final locked phase on injection frequency and injection power also agrees well with theory.

Citation Download Citation

Shien Chi Chen, George Bekefi, and Richard J. Temkin "Injection locking of a long-pulse relativistic magnetron", Proc. SPIE 1407, Intense Microwave and Particle Beams II, (1 April 1991); https://doi.org/10.1117/12.43481

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