Offset Double Corrugated Waveguide

Basu, Rupa and Rao, Jeevan M. and Letizia, Rosa and Paoloni, Claudio (2022) Offset Double Corrugated Waveguide. In: 2021 22nd International Vacuum Electronics Conference, IVEC 2021 :. 2021 22nd International Vacuum Electronics Conference, IVEC 2021 . Institute of Electrical and Electronics Engineers Inc., NLD. ISBN 9780738145167

Abstract

The novel offset double corrugated waveguide is proposed as slow wave structure for wide band TWTs at sub-THz frequencies as enabling power amplifier for long range sub-THz links. The double corrugated waveguide has been conceived to relax the fabrication, main technological challenge for sub-THz vacuum tube realization, maintaining high performance. The offset double corrugated waveguide has the same advantages of the double corrugated waveguide in terms of fabrication, but it provides a higher interaction impedance. In the paper, the offset double corrugated waveguide has been designed and compared to the double corrugated waveguide in the 150 - 161 GHz frequency range, demonstrating the higher interaction impedance, beneficial for improving TWT performances.