Title :
Dispersion Characteristics of a Grating-waveguide for Terahertz Radiation
Author :
Liu, Wenxin ; Yang, Ziqiang ; Liang, Zheng
Author_Institution :
Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
The linear dispersion equation of a grating-waveguide driven by a two-mixed electron beam for an application in Terahertz (THz) radiation is derived with the help of fluid theory, and the interaction of beam-wave is analyzed by the numerical solutions. We study the growth rate of fundamental mode and the second operation mode, and find that the growth rate is considerably enhanced due to the presence of two-stream instability. The peak growth rate versus voltage ratio is investigated, and the result shows that it can be enhanced by the proper choice of voltage ratio.
Keywords :
dispersion (wave); electron beams; submillimetre waves; waveguides; beam-wave interaction; dispersion characteristics linear dispersion equation; grating-waveguide; peak growth rate; terahertz radiation; two-mixed electron beam; Antennas and propagation; Electromagnetic compatibility; Electron beams; Equations; Frequency; Gratings; Microwave antennas; Microwave propagation; Microwave technology; Voltage; Dispersion equation; Growth rate; THz radiation; Two-admixed beam; Voltage ratio;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007 International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-1045-3
Electronic_ISBN :
978-1-4244-1045-3
DOI :
10.1109/MAPE.2007.4393635
