This paper presents the electrical design of a high power ring-bar TWT amplifier at Ku-band. The design parameters of Slow-wave structure (SWS) were synthesized theoretically. Further, the design was optimized using a computer simulation technology (CST). The dispersion and interaction impedance characteristics were simulated using the eigenmode simulation (EMS) technique at a beam voltage of 14.5 kV. The sever and attenuators were incorporated in the designed two-section TWT for obtaining the device gain of more than 30 dB. The particle-in-cell (PIC) simulation was predicted the power of 61.5 dBm (1412 watts), the gain of 34.5 dB, and electronic efficiency of 17.5% at operating center frequency of 15.15 GHz for beam voltage of 14.5 kV and current of 0.55 A. The gain fluctuation value was obtained less than 1 dB for any 80 MHz bandwidth for the interest of frequency band of 14.9 to 15.4 GHz.

中文翻译：

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Ku波段1200瓦以上功率环条慢波结构TWT设计与仿真

本文介绍了 Ku 波段高功率环形行波管放大器的电气设计。理论上综合了慢波结构(SWS)的设计参数。此外，该设计还使用计算机模拟技术 (CST) 进行了优化。在 14.5 kV 束电压下使用本征模式模拟 (EMS) 技术模拟色散和相互作用阻抗特性。为获得超过 30 dB 的设备增益，设计的两段 TWT 中包含了服务器和衰减器。电池内粒子 (PIC) 模拟预测功率为 61.5 dBm（1412 瓦），增益为 34.5 dB，电子效率为 17.5%，工作中心频率为 15.15 GHz，束电压为 14.5 kV，电流为0.55 安。