Grating rectangular waveguide for THz backward wave oscillator

doi:10.11972/j.issn.1001-9014.2017.06.004

Home > Archive>Volume 36, Issue 6, 2017 >655-659. DOI:10.11972/j.issn.1001-9014.2017.06.004

Grating rectangular waveguide for THz backward wave oscillator
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                        10.11972/j.issn.1001-9014.2017.06.004
                    
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Affiliation:a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu,a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu,a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu,a THz center,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu,University of Electronic Science and Technology of China
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Abstract:

A slow-wave structure (SWS) composed of a grating inside a rectangular waveguide is adopted as the circuit of the backward wave oscillator (BWO) in terahertz regime in this paper. Its dispersion curves and interaction impedance are presented by an analytical method and three-dimensional (3-D) electromagnetic software. The results by analysis and simulation agree well. By optimization, a BWO with the SWS at a central frequency 340GHz is fully verified by 3-D particle-in-cell (PIC) code. The BWO is demonstrated more than 100mW output power with very low current density and 30GHz tuning bandwidth.

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ZHANG Kai-Chun, CHEN Ke, WANG Qi, SHENG Chang-Jian, YUAN Xue-Song. Grating rectangular waveguide for THz backward wave oscillator[J]. Journal of Infrared and Millimeter Waves,2017,36(6):655~659

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Received:May 02,2017
Revised:September 15,2017
Adopted:June 08,2017
Online: November 30,2017
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