摘要
提出了一种新型的双面电磁带隙微带结构,并运用有限元法对其进行了仿真分析,计算结果显示该结构具有紧凑超宽阻带和低通特性良好的特点。在此基础上,设计了一种基于该结构的新型电磁晶体微带天线。计算和实验表明,与普通贴片天线相比,新型电磁晶体天线不仅抑制了2～6次谐波,在比较宽的频带内有效地抑制了高次谐波引起的辐射,而且克服了传统电磁晶体微带天线的一些缺陷,因而完全可以取代传统形式的电磁晶体天线。由于新型电磁晶体微带天线可以明显改善有源天线系统的性能,必将在现代有源通信领域得到广泛的应用。
A novel dual planar electromagnetic bandgap （DP- EBG） microstrip structure is designed and analyzed using the Finite Element Method （FEM）. Numerical results indicate that the proposed structure can achieve an ultra - wide stopband with excellent passband performance within a small circuit area. Then a novel electromagnetic crystal microstrip antenna is proposed by employing the unique DP -EBG configuration, and both the calculated result and experimental result demonstrate that the application of DP - EBG structure can not only drastically diminish the radiation of 2 -6 harmonics in a broad frequency band compaired with normal patch antenna, but also overcome some shortage of the traditional electromagnetic crystal microstrip antenna, so the proposed electromagnetic crystal microstrip antenna can replace the traditional electromagnetic crystal microstrip antenna for its high - performance of harmonic suppression. Since this novel antenna can evidently improve the performance of the active antenna system, it will be used widely in modern active communication fields.
出处
《电讯技术》
北大核心
2009年第12期75-80,共6页
Telecommunication Engineering
