Parametric Study of Pin-based Gap Waveguide for Millimeter Wave Slow Wave Structures

Abozied, Amira Zied; Letizia, Rosa

doi:10.1109/ucmmt56896.2022.9994829

Cited by 1 publication

(1 citation statement)

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“…This is obtained while retaining all the benefits of an all-metal rectangular waveguide as compared to the use of planar circuits [13]. Initial investigations of pin-based gap waveguide SWSs have been recently reported, [14]- [16]. In this paper, we propose the use of a novel groove gap waveguide configuration as the SWS waveguide enclosure.…”

Section: Introductionmentioning

confidence: 99%

Half-Height Pin Gap Waveguide-Based Slow-Wave Structure for Millimeter Wave Traveling-Wave Tubes

Abozied

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Letizia

2023

IEEE Trans. Electron Devices

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The design of a W-band traveling-wave tube (TWT) power amplifier based on a groove gap waveguide slow wave circuit is presented in this paper. The technology of gap waveguide is analyzed to aid the design of electromagnetic band gap based slow wave structures in the upper millimeter wave range of the spectrum while alleviating some of the typical fabrication challenges at these frequencies. The results of Particle-In-Cell (PIC) simulations numerically demonstrate a 10-GHz instantaneous 3-dB bandwidth in the range 89-99 GHz with a minimum power gain of 25 dB. A prototype of the complete slow wave structure is manufactured via computer numerical control (CNC) machining and measured to verify the cold simulation results. Machining tolerances and surface roughness are also investigated. The design approach via groove gap waveguide is flexible and can be extended to alternative rectangular waveguide based slow wave structures.

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Section: Introductionmentioning

confidence: 99%