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Frequency Doubling Harmonic Gyro-TWT’s (development and experimental studies)

Frequency Doubling Harmonic Gyro-TWT’s (development and experimental studies). Institute for Plasma Research MURI 99.

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Frequency Doubling Harmonic Gyro-TWT’s (development and experimental studies)

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  1. Frequency Doubling Harmonic Gyro-TWT’s(development and experimental studies) Institute for Plasma Research MURI 99 • We will complete the optimization of operating parameters and measurements of output power, gain, bandwidth, efficiency, phase noise and stability of the Ka-band TE03 frequency doubling gyro-TWT by Dec. 1999. • The device is predicted to produce output power at 35 Ghz of more than 200 kW with 30 dB gain, a bandwidth of nearly 1%, efficiency at least 20%, mean phase deviation less than 2 degrees and be zero drive stable.

  2. Frequency Doubling Harmonic Gyro-TWT’s(development and experimental studies) Institute for Plasma Research MURI 99 • A new frequency multiplying, harmonic gyro-TWT is currently under development. Simulations of the TE0n fundamental input and harmonic output circuits show that more than 5% bandwidth may be achievable. • Cold testing of the structures and plans to fabricate the tube are underway. Input Mode Launcher and Converter Extended Interaction Output Circuit

  3. Novel Fast-wave Amplifier Concepts (Theory) Institute for Plasma Research MURI 99 • Nonlinear theory of two-stage gyro-TWT’s operating • at the fundamental cyclotron resonance, • in the frequency doubling regime. • Theory of a gyro-TWT with a waveguide partially loaded with a lossy dielectric for realizing stable, high gain operation.

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