Development and Modeling of a Multiple-Tunnel Meander-Line Slow-Wave Structure for a High-Power Millimeter-Band Traveling-Wave Tube

In this paper, we present the results of design, simulation, and fabrication of a multiple-tunnel slow-wave structure (SWS) for a high-power millimeter-band traveling-wave tube (TWT) with multiple sheet electron beams. Technology for microfabrication of the multiple-tunnel SWS is discussed. The results of fabrication and verification of the SWS are presented. Electromagnetic parameters of the SWS with different number of beam tunnels were simulated.