Design of two-stage tapered harmonic multiplying gyro-TWT

C. W. Baik, S. G. Jeon, D. H. Kim, A. K. Ganguly, G. S. Park, N. Sato, K. Yokoo

Research output: Contribution to journalConference articlepeer-review


The two-stage tapered gyro-TWT has shown its stable operation at Ka-band with 20% bandwidth. A Ka-band harmonic multiplying amplifier is being investigated employing an axis-encircling electron gun with moderate beam voltage of 30 kV and current of 1A. A two-stage linearly tapered interaction circuit is chosen using a rectangular waveguide. A nonlinear simulation predicted a saturated gain of 25 dB with peak power of 4 kW without axial velocity spread of electron beam at the third harmonic. The bandwidth of 9% is predicted at the center frequency of 35 GHz. The bandwidth decreases to 3% when the velocity spread of 4% is assumed. A detailed discussion on the design will be presented.

Original languageEnglish
Pages (from-to)P4C31
JournalIEEE International Conference on Plasma Science
Publication statusPublished - 2001
Event28th IEEE International Conference on Plasma Science/ 13th IEEE International Pulsed Power Conference - Las Vegas, NV, United States
Duration: 2001 Jun 172001 Jun 22


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