CAJ | 학술논문

本文提出一种消除微带天线杂谐振点的方法，该微带天线为双层介质板，其谐振频率为2．4 GHz ，共有两个杂谐振点分别在4．4 GHz 附近及5．8 GHz 附近。这两个杂谐振点破坏了微带天线的性能，故本文通过在接地板上合理地开 U 型缝来消除这两个谐振点，U 型缝隙的长度为相应频率谐振点波长的一半；如果在缝隙上有开放端口，则 U 型缝隙长度为相应频率谐振点波长的四分之一。仿真结果表明：该方法可有效消除杂谐振点。
본문제출일충소제미대천선잡해진점적방법，해미대천선위쌍층개질판，기해진빈솔위2．4 GHz ，공유량개잡해진점분별재4．4 GHz 부근급5．8 GHz 부근。저량개잡해진점파배료미대천선적성능，고본문통과재접지판상합리지개 U 형봉래소제저량개해진점，U 형봉극적장도위상응빈솔해진점파장적일반；여과재봉극상유개방단구，칙 U 형봉극장도위상응빈솔해진점파장적사분지일。방진결과표명：해방법가유효소제잡해진점。
A method is proposed to eliminate undesired resonant points of a dual-layer circular polarization microstrip antenna ,the frequency of which is 2 .42 GHz .The simulation results show that there are two undesired resonant points ,the frequencies of which are both greater than the resonant frequency .One is around 4 .4 GHz ,while the other is around 5 .8 GHz .As they would disturb the proper functioning of the antenna ,the paper will eliminate the undesired resonant points by cutting U-shaped slots on the ground .Size of the slot is half of the wavelength of corresponding frequency point if slot is cut on the patch ,while it is a quarter of the wavelength if there is a opening port on the slot .The simulation results show that it’s effective to eliminate the undesired resonant points in this way .