摘要
详细介绍了微波铁氧体器件在雷达、通讯等领域中的应用。恒场类器件有环行器、隔离器,主要应用在发射和接收系统中,变场类器件有移相器、变极化器、开关和调制器等,主要应用在天线和馈电网络中。文中用统一的理论,非互易性原理,对微波铁氧体的工作原理予以深入研究。对应用中的2类非线性问题,高功率自旋波非线性激发和进动非线性引发的倍频、混频和互调现象,进行了分析和计算,并提出了克服非线性的方法。通过高频电磁场结构仿真HFSS验证了上述非互易理论和非线性问题分析的正确性。
The application of microwave ferrite devices in the fields of radar and communication etc. are comprehensively reviewed. The static magnetic field devices, such as circulators, isolators etc. are mainly applied to the transmission and receiving systems and variable magnetic field devices, such as phase-shifter, variable polarizer, ferrite switch and modulator, are mainly applied to antenna and feeding network. Using a unified theory, non-reciprocity principle （ equation）, the mechanism of the various microwave ferrite devices are deeply analyzed in this paper. There are two kinds of non-linearity effect in application of microwave fer-ite, i.e. the high-power non-linear effect of the unstable spin-wave exciting and the phenomenon of frequency doubling, frequency mixing and inter-modulation due to non-linear procession. They are analyzed in detail, calculated and an approach proposed to overcome the non-linear effect. With high frequency structure simulation （HFSS） as indicated above the correctness of non-reciprocity principle, non-linear theory and the precision of analysis and calculation can be verified.
出处
《现代雷达》
CSCD
北大核心
2009年第9期5-13,共9页
Modern Radar
关键词
微波铁氧体
非互易性
非线性
环行器
隔离器
移相器
变极化器
microwave ferrite
non-reciprocity
non-linearity
circulator
isolator
phase-shifter
variable polarizer
