TY - GEN
T1 - Experimental verification of harmonic multiplication in ka-band two-stage tapered Gyro-TWT
AU - Baik, C. W.
AU - Jeon, S. G.
AU - Kim, D. H.
AU - Ganguly, A. K.
AU - Park, G. S.
AU - Sato, N.
AU - Yokoo, K.
PY - 2003/1/1
Y1 - 2003/1/1
N2 - A harmonic multiplying gyro-travelingwave tube (gyro-TWT) has bem designed, fabricated. It triplicates X-band input frequencies to amplified Ka-band output frequencies. Using a self-consistent large-signal theory [1], a saturated gain of 23.8 dB, a bandwidth of 4.1 %, and an electronic efficiency of 10 % are predicted when an axis-encircling electron beam of 4 % axial velocity spread is assumed. 30 kV, 1 A cusp electron beam is employed. The interaction circuit is atwestage linearly tapered rectangular waveguide with a server where the RF is completely cut-off In the input stage, the fundamental cyclotron harmonic interaction occurs at X-band frequencies and the third harmonic interaction is occurred in the output stage with dtstributed interaction along the circuit. Two-stage linearly tapered gyro-TWT was first demonstrated at NRL [2], which shows a 20 % bandwidth at Kaband with saturated gain of 25 dB using the fundamental cyclotron harmonic interaction in both stages.
AB - A harmonic multiplying gyro-travelingwave tube (gyro-TWT) has bem designed, fabricated. It triplicates X-band input frequencies to amplified Ka-band output frequencies. Using a self-consistent large-signal theory [1], a saturated gain of 23.8 dB, a bandwidth of 4.1 %, and an electronic efficiency of 10 % are predicted when an axis-encircling electron beam of 4 % axial velocity spread is assumed. 30 kV, 1 A cusp electron beam is employed. The interaction circuit is atwestage linearly tapered rectangular waveguide with a server where the RF is completely cut-off In the input stage, the fundamental cyclotron harmonic interaction occurs at X-band frequencies and the third harmonic interaction is occurred in the output stage with dtstributed interaction along the circuit. Two-stage linearly tapered gyro-TWT was first demonstrated at NRL [2], which shows a 20 % bandwidth at Kaband with saturated gain of 25 dB using the fundamental cyclotron harmonic interaction in both stages.
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U2 - 10.1109/IVEC.2003.1286380
DO - 10.1109/IVEC.2003.1286380
M3 - Conference contribution
AN - SCOPUS:84947790460
T3 - 4th IEEE International Vacuum Electronics Conference, IVEC 2003 - Proceedings
SP - 350
EP - 351
BT - 4th IEEE International Vacuum Electronics Conference, IVEC 2003 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th IEEE International Vacuum Electronics Conference, IVEC 2003
Y2 - 28 May 2003 through 30 May 2003
ER -