Title :
A novel sine ridge waveguide for 0.65THz backward wave oscillator
Author :
Luqi Zhang ; Yanyu Wei ; Minghao Zhang ; Chong Ding ; Yuanyuan Wang ; Guo Guo ; Yanshuai Wang ; Hairong Yin ; Guoqing Zhao ; Wenxiang Wang ; Yubin Gong ; Jinjun Feng ; Dazhi Li
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Vacuum Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A novel slow wave structure (SWS) called sine ridge waveguide (SRWG) has been proposed for a wideband high-power terahertz radiation source. The cold bandwidth of the SRWG is similar to the sine waveguide structure. Meanwhile, the interaction impedance of the SRWG is about 70% higher than sine waveguide at 0.65THz with the same dimensional parameters. Furthermore, it possesses low ohmic losses and reflection as sine waveguide ranging from 0.62THz to 0.68THz and could be applied to 0.65THz BWO. Finally, the particle-in-cell simulation method is used to predict its radiation performance. The results shows that the novel backward wave oscillator can produce over 0.4W continuous wave power output in a frequency range from 0.6294THz to 0.6766THz.
Keywords :
backward wave oscillators; ridge waveguides; submillimetre wave oscillators; terahertz wave generation; backward wave oscillator; cold bandwidth; frequency 0.6294 THz to 0.6766 THz; particle-in-cell simulation method; radiation performance; sine ridge waveguide; slow wave structure; wideband high power terahertz radiation source; Bandwidth; Electromagnetic waveguides; Impedance; Integrated circuit modeling; Oscillators; Periodic structures; Ports (Computers);
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956270
