论文部分内容阅读
脊加载螺旋槽行波管是一类新型毫米波大功率器件 ,给出了此结构中引入电子注后的“热”色散方程 ,并利用“牛顿”下山法求解了此复系数超越方程 .通过数值计算给出了一个工作电压为 2 0kV频率为 47 4GHz的脊棱加载慢波结构的具体尺寸 ,并对此结构中小信号增益随脊尺寸的变化情况及电子注参数对其影响进行了研究 ,计算结果表明 :此结构适宜于作为高增益窄带毫米波大功率行波管的慢波线 ,其 3dB增益带宽为 3 4% ;为了展宽其工作带宽 ,可以适当减小间隙宽度 ,也可在一定范围内提高电子注电流 .给出的理论对于研制此类行波管具有一定的指导意义 .
The ridge-loaded helical groove TWT is a new type of millimeter-wave high-power device. The “thermal” dispersion equation with the electron injection in this structure is given and the complex coefficient transcendental equation is solved by the “Newton” The numerical calculation shows the specific size of a ridge-loaded slow-wave structure with an operating voltage of 20kV and a frequency of 47 4GHz. The influence of the small-signal gain with the size of the ridge and the influence of the electron injection parameters on the structure are studied. The results show that this structure is suitable as a slow-wave line for high-power narrow-band millimeter-wave high-power TWTs with a 3dB gain bandwidth of 34%. In order to broaden its working bandwidth, the width of the gap can be reduced appropriately, Improve the electron injection current within the range.The theory given is of guiding significance for the development of such traveling wave tubes.