RT Journal Article ID 2aab02d82aa452bf A1 Goryashko, V. A. A1 Slipchenko, T. M. A1 Tarasov, Yu. V. T1 WAVE PROPAGATION IN A WAVEGUIDE SECTION WITH SHARP CORRUGATIONS JF Telecommunications and Radio Engineering JO TRE YR 2012 FD 2012-05-16 VO 71 IS 7 SP 581 OP 603 K1 irregular waveguide K1 strong gradient scattering K1 cutoff frequency AB The rigorous excitation equations are used to analyze wave propagation in a rectangular waveguide section with sharp periodic corrugations whose height is much greater than the period. It has been shown that the Brillouin diagram of the corrugated and regular waveguides in the case of strong gradient scattering is characterized by qualitatively the same frequency dependence of the longitudinal wavenumber. The only difference is that the cutoff frequencies of the corrugated waveguide modes increase with decreasing the corrugation period, and it is always possible to implement the single-mode regime within an arbitrary frequency range lying higher than the first cutoff frequency. The effect can be used to suppress the mode competition in microwave amplifiers, as well as in narrow-band oscillators provided that the latter involve the Bragg reflectors as a feed-back. PB Begell House LK https://www.dl.begellhouse.com/journals/0632a9d54950b268,1ba6fc3828452a2a,2aab02d82aa452bf.html