High-performance V-band Folded Waveguide TWT for satellite communication systems
- Authors: Livreri P.
- Publication year: 2021
- Type: Contributo in atti di convegno pubblicato in volume
- OA Link: http://hdl.handle.net/10447/566822
Abstract
In this paper, the design of a V-band high-performance folded-waveguide Traveling Wave Tube amplifier for next-generation high data-rate satellite communication systems is presented. The folded waveguide shows a flat dispersion diagram and a high interaction impedance of about 5.95 Ω at the 49 GHz central frequency under a cathode voltage and a beam current of 20.6 kV and 300 mA, respectively. Good performance in terms of output gain with a maximal value of 45 dB at the lower frequency of 47 GHz is obtained. COSMIC 1D large-signal analysis results are in good agreement with the simulated 3D PIC results. The TWT reaching a 5 GHz bandwidth with an almost constant maximum output power of about 600 W represents the best candidate for future uplink applications.