微波谐振腔湿度测量同轴环耦合设计与实现  

Design and implement of microwave resonator cavity for wetness measurement coaxial ring coupling

作　　者：张淑娥[1] 李舒毅[1] 

机构地区：[1]华北电力大学电子与通信工程系,河北保定071003

出　　处：《国外电子元器件》2008年第11期6-8,共3页International Electronic Elements

基　　金：国家自然科学基金项目(50676031);河北省自然科学基金项目(F2004000505)

摘　　要：基于微波谐振腔汽轮机内流动湿蒸汽湿度的测量原理,分析了微波谐振腔及同轴线小环耦合的场结构分布,设计出两端带栅网结构的湿度传感器。采用HFSS型微波软件对湿度传感器进行了建模仿真,由此得到场分布及S参数曲线图,以此设计出湿度传感器的结构尺寸。仿真结果表明,该微波谐振腔传感器工作在TE011模式下,谐振频率为9.58GHz,其Q=1198,适合作为测试流动湿蒸气的传感器。与采用矩形波导和谐振腔的孔耦合相比,这种新型同轴线耦合装置体积小,对汽轮机设备的开口也小,实用性也强。Based on the prineiple of humidity measurement of flowing wet steam in microwave resonant cavity,the field structure distribution of the mall loop coupling of coaxial line with microwave resonator is analyzed,and a humidity sensor with grids in two-side is designed.The implement and simulation of model is used to HFSS software.Finally the structure size of the humidity sensor is designed according to the field distribution and the curve of S parameter. The simulation results show that the microwave resonator works in TE011 mode,Q value is 1198 at 9.58GHz.The sensor is suitable for wetness measurement.Compared with the hole-coupling of rectangle waveguide with resonator,this new coupling device features small volume and placket size with strong praelicality.

关 键 词：雷达 调频 非线性/电子对抗 低截获概率 直接式数字合成 

分 类 号：TK261[动力工程及工程热物理—动力机械及工程]