组合式非周期缺陷接地结构低通滤波器的分析  

Analysis of the Low-Pass Filter with the Combined Non-periodic Defected Ground Structure

作　　者：王雷[1] 丁荣林[1] 王安国[1] 胡俊杰[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《微波学报》2004年第3期39-42,共4页Journal of Microwaves

基　　金：国家自然科学基金资助项目 (6 0 3710 2 9)

摘　　要：利用时域有限差分法对非周期缺陷接地结构 (CNPDGS)进行了电磁仿真 ,研究了由CNPDGS结构构成的低通滤波器的频率特性 ,并将本文分析结果与有关文献的测量结果进行了比较 ,二者一致性很好 ,从而验证了本文方法的有效性和计算的正确性。在此基础上 ,进一步研究了缺陷接地结构尺寸参数变化对低通滤波器特性的影响 ,并给出了低通滤波器频率特性随结构尺寸参数变化的曲线 ,设计了通带分别为 0 .7GHz和 6 .5GHz的低通滤波器。The low-pass filter formed by the combined non-periodic defected ground structu re (CNPDGS) is simulated by finite-difference time-domain (FDTD) method in this paper. The results of the simulation show good agreements with the results of m easurement in the reference. It shows that the analysis method and the calculati on in the paper are effective and correct. Furthermore, the effect of the lattic e dimensions on the characteristic of the low-pass filter formed by the CNPDGS structure is studied.The curves of characteristic varying with the dimensions are given. At last, low-pass filters with 0.7GHz and 6.5GHz pass-band are designed, respectively.

关 键 词：低通滤波器 通带 电磁仿真 接地 时域有限差分法 频率特性 缺陷 参数变化 测量结果 组合式 

分 类 号：TN713[电子电信—电路与系统]