摘要
设计了Ka波段螺旋线行波管的慢波结构,分析其色散特性曲线和耦合阻抗,对高频系统进行了优化;利用PIC粒子模拟得到在工作频带内饱和输出功率>73.5 W,增益畸变<2%,并对试制样管进行了试验,测得在工作频带内输出功率>45 W,电子效率>12.5%,采用4级降压收集极后总效率大于40%,最后对模拟结果和实测结果的差异原因进行了简单分析。
The slow-wave structure of the Ka band helix-TWT is designed.Its color scattering characteristic curve and coupling impedance are analyzed.The high-frequency system is optimized.The results of Interaction from PIC simulation show that the output power is more than 73.5 W and distortion of gain is less than 2% at the working frequency.The test results show that this device has the output power of more than 45 W,the electronic efficiency of more than 12.5%,and the overall efficiency of more than 40% at the working frequency.The difference between the simulation result and test result is analyzed.
出处
《电子科技》
2012年第3期72-74,共3页
Electronic Science and Technology
关键词
空间行波管
冷测特性
注波互作用
电子效率
space TWT
cold-test characteristics
beam-wave interaction
electronic efficiency
