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Title: A W-Band backward-wave oscillator based on planar helix slow wave structure
Authors: Kumar, Ajith M. M.
Aditya, Sheel
Wang, Shaomeng
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Kumar, A. M. M., Aditya, S., & Wang. S. (2018). A W-Band backward-wave oscillator based on planar helix slow wave structure. IEEE Transactions on Electron Devices, 65(11), 5097 - 5102. doi:10.1109/TED.2018.2871785
Journal: IEEE Transactions on Electron Devices
Abstract: A backward-wave oscillator (BWO) operating at W-band is presented. The BWO is based on a microfabrication-compatible planar helix slow wave structure with straight-edge connections (PH-SECs). The oscillator is designed to operate with a beam current of 20 mA and a beam voltage varying from 7 kV to 11 kV. Dispersion characteristics and their sensitivity to some of the geometrical parameters are presented. The particle-in-cell simulation results show that the oscillator frequency tunes from 86.9 GHz to 100.07 GHz with a tunable bandwidth of 14%. The oscillator provides a maximum peak output power of 2.3 W and a peak efficiency of 1.62%. Results of oscillator performance with a beam current of 18 mA and 16 mA are also presented. To validate the simulation results of the PH-SEC, a scaled version of the PH-SEC operating at X-band is fabricated. The measured S-parameters and the phase velocity for the fabricated structure match very well with the simulation results.
ISSN: 0018-9383
DOI: 10.1109/TED.2018.2871785
Rights: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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