摘要
为满足飞行器天线在防护层下工作的要求,从双层微带天线出发,采用ANSOFT HFSS软件计算了天线窗内的场分布;阐述了微带激励的背腔天线的工作模式,包含微带TM11模过渡为口径面近似TE11模辐射和开口的异形谐振腔(TM010和TM210)辐射;设计出了宽带匹配的天线样机,并给出了相关设计尺寸。测试结果表明,该天线在S波段驻波比(Voltage Standing Wave Ratio,VSWR)≤2.0的匹配带宽达到42%。
In this paper, the operating principle of microstrip patch inside a cavity window is analyzed with HFSS software. Under the window cavity, the microstrip patch functions as an exciter to excite the cavity. Depending on the microstrip patch＇s inner mode, TM010, TE11, TM210 can be generated inside the cavity. One prototype is constructed and tested, the input impedance bandwidth of the antenna is up to 42% while VSWR≤ 2.0 in S band.
出处
《信息与电子工程》
2006年第5期372-376,共5页
information and electronic engineering
关键词
微带背腔天线
驻波比
方向图
TM11模
cavity-backed microstrip antenna
VSWR
radiation pattern
TM11 mode
