Design and Experiment of An E-band Folded Waveguide Traveling Wave Tube

Ji, Rujing; Yang, Zhi-Xin; Guo, Zugen; Wang, Qi; Han, Ping; Gong, Huarong

doi:10.1109/ivec.2019.8745046

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…As a result, an increased interaction can be expected. It should be pointed out that the on-axis coupling impedance and loss for CV-FWG are smaller than those for FWG in [11], which is different from the above simulation results. The reason is that the comparison is carried out under the same structure parameters in [11].…”

Section: Design Of Swscontrasting

confidence: 85%

“…It should be pointed out that the on-axis coupling impedance and loss for CV-FWG are smaller than those for FWG in [11], which is different from the above simulation results. The reason is that the comparison is carried out under the same structure parameters in [11]. To obtain consistency and good cold characteristics in the operation frequency band, the operation point of CV-FWG moves to the left, which leads to the increases of loss and on-axis coupling impedance, and the effect of on-axis coupling impedance is more apparent.…”

Section: Design Of Swscontrasting

confidence: 85%

“…UESTC developed an E-band FWG TWT. The experimental results showed that the prototype tube covers the bandwidth of 83-86 GHz with an output power above 30 W. The tube is tested when the electron gun voltage is 17 kV and the beam current is 62 mA [11]. Both of these TWTs have a large structure size and work at high voltage and high current.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of a Miniaturized E-Band Cosine-Vane Folded Waveguide Traveling-Wave Tube for Wireless Communication

Ma¹,

Cai²,

Feng³

2021

Electronics

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To realize the miniaturization of E-band traveling-wave tubes (TWTs), the size analysis and optimization design were carried out based on an improved cosine-vane folded waveguide (CV-FWG) slow-wave structure (SWS) that operates in a low voltage. In addition, a novel miniaturized T-shaped coupler was proposed to achieve a good voltage standing wave rate (VSWR) in a broad bandwidth. The coupler length was reduced by as much as 77% relative to an original design. With higher coupling impedance, the radius and length of the shortened SWS were optimized as 1.3 mm and 50 mm, respectively. Using microwave tube simulator suit (MTSS) and CST particle studio (PS), 3D beam–wave simulations at 9400 V, 20 mA predicted a gain of 20 dB and a saturated output power of 9 W. The simulation results for CV-FWG TWTs were compared with conventional FWG TWTs from 81 GHz to 86 GHz, showing significant performance advantages with excellent flatness for high-rate wireless communication in the future. The CV-FWG SWS circuit will be fabricated by 3D printing, and this work is underway.

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Section: Design Of Swscontrasting

confidence: 85%

Section: Design Of Swscontrasting

confidence: 85%