E波段连续波空间行波管研制进展

Development of an E-band continuous wave space TWT

摘要:

针对高波段空间行波管的卫星通信应用需求，介绍了E波段连续波空间行波管的研制情况。该行波管通过进一步优化折叠波导慢波结构参数和调整周期跳变方案，实现改善带内增益波动性、提高效率的目的。研制出的样管在14.7 kV、74 mA条件下，实现电子注动态流通率高于98%，在71~76 GHz范围内，输出功率大于85 W，总效率大于37%，增益大于40 dB。

Abstract:

According to the satellite communication application requirements for high-frequency space Traveling Wave Tube(TWT), the experimental results of an E-band continuous wave space TWT are introduced. The parameters of the Folded Waveguide(FWG) slow wave structure are further optimized and the phase velocity taper scheme is adjusted to reform the gain fluctuation, improve the overall efficiency. A prototype tube is fabricated and tested with beam voltage of 14.7 kV and beam current of 74 mA, the experimental measurement results show this prototype is capable of producing an output power up to 85 W and a gain above 40 dB, with the total efficiency over 37% from 71 to 76 GHz. In addition, the TWT has achieved a beam transmission over 98% at the continuous wave operation.