Backward wave mode interaction impedance at THz frequencies for corrugated waveguide

Abstract

A novel analytical expression to compute the interaction impedance of corrugated rectangular waveguide slow‐wave structure, for backward wave regime is proposed.The remarkable agreement of the analytical model with 3D electromagnetic simulations makes the proposed expression of practical usefulness for backward wave oscillator design up to THz frequencies. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:837–839, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26721

A novel multi-pin rectangular waveguide slow-wave structure based backward wave amplifier at 340 GHz

“…The point G is at the position of x = a/2 and y = h + 0.03 mm, which is the position of a sheet beam above the SWS, where a maximum impedance exists for a sheet beam as that of a corrugated waveguide SWS. [18] The impedances at different measured positions in the SWS are shown in Fig. 4(b).…”