摘要
针对目前C波段磁控管存在的频率输出不稳定、相位输出随机移动、功率容量的物理限制等一系列问题,设计实现了基于注入锁频和反馈调相技术的C波段4路磁控管相干功率合成微波源。该微波源由三部分构成:4路独立注入锁定的磁控管单元,4路间稳频、锁频、比相的反馈控制单元,测量及显示单元。为更好的对C波段4路磁控管相干功率合成微波源进行研究,在搭建的4路磁控管微波源的平台上,对直流高压源的纹波特性、磁控管的阳极电流、功放的注入功率、4路磁控管之间的相位控制等影响微波源输出特性的相关因素进行了实验研究。最终实现微波源工作带宽:5.788GHz±2MHz;频率稳定度:0.07%;相位调节范围:0°~360°;相位调节精度:±3°;相位噪声:-40dBc/Hz@1kHz;功率合成效率:94.74%;总输出功率】2000W。
In order to solve the problems exists on the C band magnetron such as frequency output do not stable,phase output move randomly and the limitation of output power,we design a C band 4magnetron microwave source based on injection locking and feedback phase modulation technique.The microwave source consists of three parts:4independent mutually magnetron unit;frequency stabilization and feedback control unit;measure and display unit.In order to study the C band microwave source better,on the magnetron microwave sources platform,we analyses the related factors:Power amplifier power injection,DC high voltage power supply ripple characteristic,magnetron anode current,4way to control the phase angle between the magnetron.finally,the microwave source can work at 5.788GHz±2MHz;frequency stability:1kHz;phase adjustment range:0°~360°;phase adjusting precision:±3°;phase noise:-40dBc/Hz@1kHz;Power synthesis efficiency:94.74%;output power of the system >2000W.
出处
《真空电子技术》
2014年第4期52-57,61,共7页
Vacuum Electronics
关键词
磁控管微波源
注入锁频
反馈调相
相干功率合成
Magnetron microwave source,Injection locked frequency,Feedback phase modulation,Co-herent power synthesis
