Journal
IEEE ELECTRON DEVICE LETTERS
Volume 40, Issue 9, Pages 1526-1529Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2019.2930729
Keywords
Terahertz radiation; traveling wave tube (TWT); helical groove rectangular waveguide (HGRW); low loss; gain; electron efficiency
Categories
Funding
- National Natural Science Foundation of China [61531010]
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A novel helical groove rectangular waveguide slow wave structure (HGRW-SWS) which evolves from the double staggered grating waveguide (DSGW) SWS is put forward to develop the high-gain and high electron efficiency terahertz (THz) traveling wave tube (TWT). The major advantages of the HGRW SWS are the higher interaction impedance, lower ohmic loss, and lower phase velocity especially in higher frequency band compared with the DSGW SWS. The gain and electron efficiency of TWT using HGRW SWS have been significantly improved, respectively, compared with the TWT using DSGW-SWS.
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