E波段矩形环对角双杆行波管设计

汤鹏; 廖永森; 何锐; 高嘉欣; 魏望和

doi:10.11884/HPLPB202638.250432

E波段矩形环对角双杆行波管设计

Design of E-band rectangular-ring vertex double-bar traveling-wave tubes

摘要

摘要: 当代毫米波通信的发展对行波管的工作频率、输出功率和效率等关键技术指标提出了更高的要求。为适应下一代卫星通信的发展，开展了E波段矩形环对角双杆慢波结构行波管研究。在详细分析了慢波结构参数对高频特性的作用规律基础上，获得了适合E波段内平坦色散和高耦合阻抗的优化结果。PIC仿真结果表明，在14200 V电子注电压和0.2 A工作电流的条件下，矩形环对角双杆行波管在83 GHz处可以提供228 W的最大输出功率，对应的增益和电子效率分别为33.6 dB和8%，3 dB带宽为6 GHz（78.5～84.5 GHz）。上述结果表明，矩形环对角双杆行波管作为一种高频率和大功率行波管具有良好的发展前景。

Abstract:
Background The development of modern millimeter-wave communication has placed higher demands on key technical indicators of traveling-wave tubes (TWTs), such as operating frequency, output power, and efficiency.
Purpose To adapt to the development of next-generation satellite communications, this paper presents a study on a TWT with a rectangular-ring vertex double-bar (RRVDB) slow-wave structure (SWS) in the E-band.
Methods Based on a detailed analysis of the effects of the SWS parameters on high-frequency characteristics, optimized results with flat dispersion and high interaction impedance in the E-band were obtained.
Results PIC simulation results show that, under a beam voltage of 14200 V and an operating current of 0.2 A, the RRVDB TWT can provide a peak power of 228 W at 83 GHz, with corresponding gain and electronic efficiency of 33.6 dB and 8%, respectively, and the device's 3 dB bandwidth can reach 6 GHz (78.5～84.5 GHz).
Conclusions The above results indicate that the RRVDB TWT exhibits favorable development prospects as a high-frequency, high-power traveling-wave tube.

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