耳型折叠波导慢波结构W波段行波管

A W-band Traveling Wave Tube with ear-Folded Waveguide slow-wave structure

毫米波行波管具有大功率、宽频带、高增益等特点,广泛用于雷达、高速通信、电子对抗等现代军事装备中。为提高折叠波导耦合阻抗并考虑工程应用性,提出一种耳型折叠波导新型慢波结构。与常规矩形波导相比,工作频带内耦合阻抗提高30%以上,损耗降低10%。研制的耳型折叠波导W波段行波管,在工作电压21.9 kV,电流210 mA,占空比为5%时,10.8 GHz带宽内输出功率大于192 W,峰值功率达278 W,电子效率和增益分别达到6.3%和44.6 dB,行波管工作稳定。

Millimeter-wave Traveling Wave Tubes(TWTs)have the characteristics of high power,broad band and high gain,and are widely used in modern military electronic equipment,such as radar,high-speed communication and electronic countermeasures,etc.In order to improve the coupling impedance of the Folded Waveguide(FWG)and the engineering applicability,a novel type of ear-FWG is proposed,which increases the coupling impedance in the working frequency band by more than 30%and reduces the loss by 10%compared with the conventional rectangular waveguide.When the ear-FWG W-band TWT operates at 21.9 kV and 210 mA,and the duty cycle is 5%,the output power in the 10.8 GHz bandwidth is higher than 192 W,the peak power reaches 278 W,the electron efficiency and gain reach 6.3%and 44.6 dB,respectively,and the TWT works stably.