AN INNER-FEEDBACK-STYLE TRAVELING-WAVE TUBE OSCILLATOR

• Published in: Journal of electronics (China) Vol. 29; no. 6; pp. 556 - 561
• Main Authors: Wang, Zicheng, Li, Haiqiang, Xu, Anyu, Liu, Qinglun, Liu, Wei
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science Press 2012; Graduate University of Chinese Academy of Science, Beijing 100039, China; Institute of Electronics, Chinese Academy of Science, Beijing 100190, China%Institute of Electronics, Chinese Academy of Science, Beijing 100190, China
• Subjects: Electrical Engineering; Engineering; W band; TN124; Inner-feedback-style traveling-wave tube oscillator; THz sources
• ISSN: 0217-9822; 1993-0615
• DOI: 10.1007/s11767-012-0889-5

A new concept of inner-feedback-style traveling wave tube oscillator, which is based on a traveling-wave tube having a partial reflector located at near the junction between the slow-wave structure and the output coupler and a mechanical tuner connected to the input coupler, is proposed. Simulations by CHIPIC code show that the inner-feedback-style traveling wave tube oscillator having 100W of power, about 10% of electron efficiency and a tunable band of 73.35-73.91 GHz may be achieved. Compared with Backward Wave Oscillators （BWOs）, the new devices have similar ability for tuning, and have much higher electron efficiency, suggesting much more potential as a Terahertz source.