摘要
对一款THz频段矩形微带贴片天线进行理论分析与设计,采用光子晶体带隙结构介质,通过对空气孔半径、孔距和微带线宽度的扫频分析,微带天线获得最佳传输性能。仿真结果显示天线的回波损耗从-19.45 dB降至-41 dB,驻波比(VSWR≤2)阻带带宽从3%增加至4.1%,最大增益天线辐射方向达到8.8 dB。仿真结果表明:光子晶体带隙结构能有效提高天线的传输效能。
A THz wave rectangular micro-strip antenna is theoretically analyzed and designed. A photonic band gap structure is used as substrate. The micro-strip antenna has the best performance of transmission based on frequency sweep on parameters, such as the radius of air gap, the distance between two air gaps and the width of antenna micro-strip line. The simulation results show that the return loss of antenna reduces from - 19.45 dB to -41 dB, and the impedance bandwidth of VSWR（ VSWR〈~2）increases from 3% to 4. 1%, and the maximum gain of antenna radiation direction reaches 8.8 dB. The conclusion shows that the transmission performance of antenna can be effectively improved using the photonic crystal band gap as structure.
出处
《电视技术》
北大核心
2012年第15期112-114,137,共4页
Video Engineering
基金
揭阳市产业技术研究与开发资金计划项目(201124)
