Investigation of a Novel Planar Meander Slot-Line Slow-Wave Structure

Wang, Yuxin; Wang, Shaomeng; Dong, Yang; Guo, Jingyu; Xu, Duo; Zheng, Yuan; Wang, Zhanliang; Lu, Zhigang; Gong, Huarong; Duan, Zhaoyun; Gong, Yubin

doi:10.1109/led.2024.3355090

Cited by 1 publication

(2 citation statements)

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“…To examine the transmission characteristics of the SWS, we simulated a 50-period circuit with input/output couplers on both sides using the CST Studio Suite simulator [17]. In our previous research [18], the effects of laser cutting, acid cleaning, and copper plating on the surface roughness and S-parameter of the meander slot-line were investigated. The experimental results show that after plating a 3-5 µm copper layer on the surface of the laser-cut molybdenum sheet, the surface roughness reaches 1.67 µm, and its effective conductivity is 1.48 × 10 7 S/m.…”

Section: S-parametersmentioning

confidence: 99%

“…The S11 at the interaction of the wave with the electron beam is calculated through the input and reflected power at different frequencies, and the simulation results are shown in Figure 7b, which are less than −15 dB within the frequency 88-95 GHz and are in good agreement with the results in Figure 7a. In our previous research [18], the effects of laser cutting, acid cleaning, and copper plating on the surface roughness and S-parameter of the meander slot-line were investigated. The experimental results show that after plating a 3-5 µm copper layer on the surface of the laser-cut molybdenum sheet, the surface roughness reaches 1.67 µm, and its effective conductivity is 1.48 × 10 7 S/m.…”

Section: S-parametersmentioning

confidence: 99%

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A Staggered Vane-Shaped Slot-Line Slow-Wave Structure for W-Band Dual-Sheet Electron-Beam-Traveling Wave Tubes

Wang,

Guo,

Dong

et al. 2024

Sensors

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A staggered vane-shaped slot-line slow-wave structure (SV-SL SWS) for application in W-band traveling wave tubes (TWTs) is proposed in this article. In contrast to the conventional slot-line SWSs with dielectric substrates, the proposed SWS consists only of a thin metal sheet inscribed with periodic grooves and two half-metal enclosures, which means it can be easily manufactured and assembled and has the potential for mass production. This SWS not only solves the problem of the dielectric loading effect but also improves the heat dissipation capability of such structures. Meanwhile, the SWS design presented here covers a −15 dB S11 frequency range from 87.5 to 95 GHz. The 3-D simulation for a TWT based on the suggested SWS is also investigated. Under dual-electron injection conditions with a total voltage of 17.2 kV and a total current of 0.3 A, the maximum output power at 90 GHz is 200 W, with a 3 dB bandwidth up to 4 GHz. With a good potential for fabrication using microfabrication techniques, this structure can be a good candidate for millimeter-wave TWT applications.

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Section: S-parametersmentioning

confidence: 99%

Section: S-parametersmentioning

confidence: 99%