CAJ | 학술논문

以超宽带窄脉冲辐射为应用背景,通过添加补偿回路并调整回路的大小,设计了一种具有低频补偿的超宽带TEM喇叭天线.利用FDTD方法对天线结构进行了仿真,分析了不同补偿回路大小时TEM喇叭天线的S11参数、相位特性、辐射带宽及前后向辐射场等参数,得到了在大于400 MHz频带范围内S11参数低于-10 dB的天线结构.制作天线原型,并进行了实际测试,频域S11参数测试结果与仿真结果基本吻合.通过对时域波形的分析可知,该天线具有较高的波形保真度.
이초관대착맥충복사위응용배경,통과첨가보상회로병조정회로적대소,설계료일충구유저빈보상적초관대TEM나팔천선.이용FDTD방법대천선결구진행료방진,분석료불동보상회로대소시TEM나팔천선적S11삼수、상위특성、복사대관급전후향복사장등삼수,득도료재대우400 MHz빈대범위내S11삼수저우-10 dB적천선결구.제작천선원형,병진행료실제측시,빈역S11삼수측시결과여방진결과기본문합.통과대시역파형적분석가지,해천선구유교고적파형보진도.
By adding a loop and properly adjusting the loop structure,an UWB TEM horn antenna with low-frequency compensation is designed.The S11 parameter,phase characteristic and bandwidth of TEM horns with different loop size ale simulated and analyzed using FITD.The designed antenna is capable of operating in a very wide bandwidth,defined by a-10 dB S11.The prototypes of the antenna is manufactured and tested.The simulation result is in good agreement with the result obtained by measurement,and the antenna is shown to have good fidelity.