Abstract
A novel meander line slow-wave structure (ML-SWS) based on a series of concentric arcs was proposed for applications on low voltage and high efficiency Ka-band traveling-wave tube (TWT). The simulated results demonstrate that the proposed novel ML-SWS has a good transmission performance in Ka-band. The peak output power of the TWT can reach 60.1 W at 35 GHz. The corresponding gain and the electron efficiency is 22.2 dB and 41.71%, respectively. Furthermore, the 3-dB bandwidth can cover 25 GHz-44 GHz and the electron efficiency is over 26.8% in Ka-band.
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