针对现有大功率连续波注入锁频磁控管的输出结构插入损耗大,功率容量低的局限,本文提出了一种S波段大功率锤状能量输出器,并给出了其设计原理。利用CST微波工作室对该结构进行仿真验证,并将其与传统柱形输出结构进行了对比分析。在2.4~2...针对现有大功率连续波注入锁频磁控管的输出结构插入损耗大,功率容量低的局限,本文提出了一种S波段大功率锤状能量输出器,并给出了其设计原理。利用CST微波工作室对该结构进行仿真验证,并将其与传统柱形输出结构进行了对比分析。在2.4~2.5 GHz范围内,新结构的插入损耗大于-0.002 d B,远优于传统柱形结构。CST仿真显示,球半径与陶瓷窗厚度对其传输性能影响较大。将能量输出器与磁控管连接进行仿真,磁控管正常起振,输出频谱较好。最后,对窗结构做了热分析与应力分析,在输入功率为30 k W时,最大温升27℃,最大应力156.759 MPa,最大形变为0.010 mm。该能量输出器具有良好的传输特性与机械性能,可以满足工程需要。展开更多
The frequency characteristics of free oscillation magnetron（FOM） and injection-locked magnetron（ILM） are theoretically investigated.By using the equal power voltage obtained from the experiment data,expressions of...The frequency characteristics of free oscillation magnetron（FOM） and injection-locked magnetron（ILM） are theoretically investigated.By using the equal power voltage obtained from the experiment data,expressions of the frequency and radio frequency（RF） voltage of FOM and ILM,as well as the locking bandwidth,on the anode voltage and magnetic field are derived.With the increase of the anode voltage and the decrease of the magnetic field,the power and its growth rate increase,while the frequency increases and its growth rate decreases.The theoretical frequency and power of FOM agree with the particle-in-cell（PIC） simulation results.Besides,the theoretical trends of the power and frequency with the anode voltage and magnetic field are consistent with the experimental results,which verifies the accuracy of the theory.The theory provides a novel calculation method of frequency characteristics.It can approximately analyze the power and frequency of both FOM and ILM,which promotes the industrial applications of magnetron and microwave energy.展开更多
文摘针对现有大功率连续波注入锁频磁控管的输出结构插入损耗大,功率容量低的局限,本文提出了一种S波段大功率锤状能量输出器,并给出了其设计原理。利用CST微波工作室对该结构进行仿真验证,并将其与传统柱形输出结构进行了对比分析。在2.4~2.5 GHz范围内,新结构的插入损耗大于-0.002 d B,远优于传统柱形结构。CST仿真显示,球半径与陶瓷窗厚度对其传输性能影响较大。将能量输出器与磁控管连接进行仿真,磁控管正常起振,输出频谱较好。最后,对窗结构做了热分析与应力分析,在输入功率为30 k W时,最大温升27℃,最大应力156.759 MPa,最大形变为0.010 mm。该能量输出器具有良好的传输特性与机械性能,可以满足工程需要。
基金Project supported by the National Basic Research Program of China(Grant No.2013CB328901)the National Natural Science Foundation of China(Grant No.11305177)
文摘The frequency characteristics of free oscillation magnetron（FOM） and injection-locked magnetron（ILM） are theoretically investigated.By using the equal power voltage obtained from the experiment data,expressions of the frequency and radio frequency（RF） voltage of FOM and ILM,as well as the locking bandwidth,on the anode voltage and magnetic field are derived.With the increase of the anode voltage and the decrease of the magnetic field,the power and its growth rate increase,while the frequency increases and its growth rate decreases.The theoretical frequency and power of FOM agree with the particle-in-cell（PIC） simulation results.Besides,the theoretical trends of the power and frequency with the anode voltage and magnetic field are consistent with the experimental results,which verifies the accuracy of the theory.The theory provides a novel calculation method of frequency characteristics.It can approximately analyze the power and frequency of both FOM and ILM,which promotes the industrial applications of magnetron and microwave energy.
