Title :
Propagating quasi-TE modes in a vacuum axisymmetric corrugated-wall waveguide
Author :
Tanaka, Koji ; Minami, Kazuo ; Zheng, Xiaodong ; Carmel, Yuval ; Vlasov, Alexander N. ; Granatstein, Vcitor L.
Author_Institution :
Graduate Sch. of Sci. & Technol., Niigata Univ., Japan
fDate :
6/1/1998 12:00:00 AM
Abstract :
The nonaxisymmetric quasi-TE modes in an axisymmetric corrugated-wall metal slow-wave structure are analyzed numerically and confirmed to coincide with test measurement. In our experiment of high-power backward-wave oscillators (BWOs), the oscillation of TE11 mode was observed below the starting condition of the conventional axisymmetric TM01 mode that has been mostly assumed in previous reports. The existence of nonaxisymmetric TE11 mode must not be ignored for improved performance with a single frequency operation of high-power BWOs
Keywords :
backward wave oscillators; microwave oscillators; slow wave structures; waveguide theory; TE11 mode; axisymmetric TM01 mode; high-power backward-wave oscillators; metal slow-wave structure; numerical analysis; propagating quasi-TE modes; vacuum axisymmetric corrugated-wall waveguide; Cyclotrons; Electron beams; Frequency; High power microwave generation; Magnetic fields; Microwave generation; Microwave oscillators; Tellurium; Testing; Waveguide components;
Journal_Title :
Plasma Science, IEEE Transactions on
