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- Title
Design of a high-efficiency dual-band coaxial relativistic backward wave oscillator with variable coupling impedance and phase velocity.
- Authors
Tang, Yongfu; Meng, Lin; Li, Hailong; Zheng, Ling; Wang, Bin; Zhang, Feina
- Abstract
A dual-band high-efficiency coaxial relativistic backward wave oscillator (CRBWO) with asymmetric resonant reflector is designed and presented in this paper. Improved sectioned coaxial slow wave structure (SWS) with stepwise variation of coupling impedance and phase velocity is employed, and the performance of the dual-band CRBWO is investigated by use of a 2.5-D particle-in-cell (PIC) simulation code. When the diode voltage is 510 kV and beam current is 9.03 kA, an average microwave power of 1.0 GW with power conversion efficiency of 21.7% is obtained. Synchronously radiating dual-band frequencies of 8.1 GHz and 9.9 GHz are obtained, corresponding to C-band and X-band, respectively. A more clear and stable beating radiation microwave power with beating frequency of 1.8 GHz is acquired.
- Subjects
OSCILLATIONS; DIODES; ELECTRIC potential; RELATIVITY; COMPUTER simulation; ELECTRON beam induced current; MICROWAVES
- Publication
Laser & Particle Beams, 2013, Vol 31, Issue 1, p55
- ISSN
0263-0346
- Publication type
Article
- DOI
10.1017/S0263034612000882