Asymmetric-mode competition in a relativistic backward wave oscillator with a coaxial slow-wave structure

• DOI: 10.1063/1.3526726
• Publication Date: 2010-12-16T00:29:59Z
• Authors: Xingjun Ge; Huihuang Zhong; Baoliang Qian; Jun Zhang; Lie Liu; Liang Gao; Chengwei Yuan; Juntao He
• Keywords: Coaxial; Backward-wave oscillator; Mode (computer interface)

The initial experimental results of an L-band relativistic backward wave oscillator with a coaxial slow-wave structure are presented. asymmetric-mode-competition mechanism in the device is investigated theoretically and experimentally. It shown that diode voltage, guiding-magnetic field, concentricity play key role suppression excitation asymmetric-mode (coaxial quasi-TE11 mode). In experiments, frequency 2.05 GHz suppressed excited, which good agreement theoretical results.