Title :
Design of a G-band harmonic multiplying gyrotron traveling-wave amplifier with a mode-selective circuit
Author :
Yeh, Y.S. ; Lai, Cara H. ; Chen, C.H. ; Lin, T.Y.
Author_Institution :
Dept. of Electro-Opt. Eng., Southern Taiwan Univ. of Sci. & Technol., Tainan, Taiwan
Abstract :
A high-order-mode harmonic multiplying gyro-TWA could allow the amplifier to achieve high average powers. An improved mode-selective circuit is employed for suppressing non-TE0n competing modes while wall losses are employed for suppressing TE0n competing modes. A G-band second harmonic multiplying gyro-TWT is predicted to yield a peak output power of 56 kW at 200 GHz with an efficiency of 11%, a saturated gain of 48 dB and a 3 dB bandwidth of 3.6 GHz.
Keywords :
gyrotrons; travelling wave amplifiers; travelling wave tubes; G-band harmonic multiplying gyrotron traveling-wave amplifier; TE0n competing modes suppression; bandwidth 3.6 GHz; efficiency 11 percent; frequency 200 GHz; gain 48 dB; high-order-mode gyro-TWA; mode-selective circuit; non-TE0n competing modes suppression; power 56 kW; second harmonic gyro-TWT; traveling-wave tube; wall losses; Bandwidth; Gain; Gyrotrons; Harmonic analysis; Power amplifiers; Power generation; Power system harmonics; harmonic multiplying gyrotron traveling-wave amplifiers; mode-selective circuit;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International
Conference_Location :
Paris
Print_ISBN :
978-1-4673-5976-4
DOI :
10.1109/IVEC.2013.6571047
