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A watt-level traveling wave tube (TWT) amplifier operating above 0.3 THz has been demonstrated. This TWT based on the folded waveguide (FWG) slow-wave structure has achieved over 3.1 W of output power at 336.96 GHz, and the corresponding device gain achieves 26.2 dB. In this letter, the design and experimental test results are presented.
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Hu et al. (2019) studied this question.
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