Title :
The extension of the operation frequency range of the resonant BWOs by use of the multistage gratings
Author :
Ponomarenko, S.S. ; Kishko, S.A. ; Khutoryan, E.M. ; Kuleshov, A.N. ; Yefimov, B.P.
Author_Institution :
Vacuum Electron. Dept., O. Ya. Usikov Inst. for Radiophys. & Electron., Kharkiv, Ukraine
Abstract :
The problem of the operation frequency range extension in resonant BWO´s is discussed. The methods of the multistage grating analysis are presented. The carried out theoretical and experimental investigations show the possibility of the broad band operation with low start currents at the 2nd pass band of the 3-stage grating. The preliminary design of the slow-wave structure for operation at 220 GHz with 7 % frequency tuning range is carried out.
Keywords :
backward wave oscillators; diffraction gratings; millimetre wave oscillators; terahertz waves; 3-stage grating; broad band operation; frequency 220 GHz; multistage grating analysis; operation frequency range extension; resonant BWO; slow-wave structure; start currents; Electron beams; Gratings; Harmonic analysis; Oscillators; Power generation; Resonant frequency; Surface waves; bakward wave oscillator; multistage grating; terahertz radiation; volume-surface waves;
Conference_Titel :
Mathematical Methods in Electromagnetic Theory (MMET), 2014 International Conference on
Conference_Location :
Dnipropetrovsk
Print_ISBN :
978-1-4799-6863-3
DOI :
10.1109/MMET.2014.6928706
