研究目的
To demonstrate the double corrugated waveguide (DCW) as a promising slow-wave structure for millimeter wave, Ka-band, traveling wave tubes (TWTs) and to validate its performance through design, simulation, and S-parameter measurements.
研究成果
The DCW has been demonstrated to be an effective SWS, overcoming the difficult fabrication and high cost of helical SWS at millimeter wave frequencies. A novel solution to realize a compact TWT with improved performance by bending the DCW is presented. S-parameter measurements on DCW TWTs demonstrate low loss, wide 31–37-GHz bandwidth and excellent agreement with simulations. Predictions show up gains to 25 dB and output power up to 25 W for 12-kV beams at 200 mA and a 0.3 T axial magnetic field.
研究不足
The study acknowledges the high cost and fabrication challenges of millimeter wave TWTs, which currently limit their use to specific applications in space and defense fields. The DCW approach aims to address these challenges by introducing SWSs that are easier to fabricate and assemble.
