可调谐矩形环DGS的滤波特性研究

计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (25): 143-145.

• 数据库、信号与信息处理 • 上一篇下一篇

可调谐矩形环DGS的滤波特性研究

金涛斌1，2，金杰1，李媛1，李可佳1

1.天津大学电子信息工程学院，天津 300072
2.天津商业大学信息工程学院，天津 300134

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-09-01 发布日期:2011-09-01

Study on filter properties of tunable rectangular rings Defected Ground Structure

JIN Taobin1，2，JIN Jie1，LI Yuan1，LI Kejia1

1.School of Electronic Information Engineering，Tianjin University，Tianjin 300072，China
2.School of Information Engineering，Tianjin University of Commerce，Tianjin 300134，China

Received:1900-01-01 Revised:1900-01-01 Online:2011-09-01 Published:2011-09-01

摘要/Abstract

摘要： 提出了一种新颖的可调谐矩形环缺陷接地结构（DGS），可以用来实现微波滤波器。对矩形环DGS进行了精确的时域有限差分法（FDTD）数值分析，研究了其几何尺寸变化对阻带特性的影响。将FDTD计算结果与有关文献的测量结果进行了比较，一致性很好，从而验证了FDTD程序的有效性和计算的正确性。在微带平面添加短截线，研究了短截线的尺寸变化对阻带特性的影响。通过研究可知，可以通过改变矩形环DGS的几何尺寸去调节该结构的截止频率，也可以通过调节短截线的尺寸来改变该结构的阻带特性。这种关系能为可调谐矩形环DGS的分析和设计提供有力的指导。

关键词: 缺陷接地结构, 微波滤波器, 时域有限差分法, 截止频率

Abstract: A novel tunable rectangular rings DGS is proposed，which can be used to design microwave filter.The precise transmission coefficient of tunable rectangular rings DGS is obtained through FDTD analysis.The influences of lattice dimensions on the characteristic of frequency are studied.The results of the FDTD simulation show good agreements with the results of measurement in the references.The influences of straight microstrip line on the characteristic of frequency are also studied.A method about controlling the cut-off frequency by altering the dimensions of straight microstrip line or the lattice dimensions is presented and discussed.The relation given in this paper will provide powerful tool for the analysis and design of microwave filter using tunable rectangular rings DGS.

Key words: defected ground structure, microwave filter, Finite Difference Time Domain（FDTD）, cut-off frequency

金涛斌1，2，金杰1，李媛1，李可佳1. 可调谐矩形环DGS的滤波特性研究[J]. 计算机工程与应用, 2011, 47(25): 143-145.

JIN Taobin1，2，JIN Jie1，LI Yuan1，LI Kejia1. Study on filter properties of tunable rectangular rings Defected Ground Structure[J]. Computer Engineering and Applications, 2011, 47(25): 143-145.

[1]	金涛斌，邹军. 基于CN-FDTD的新颖DGS带阻滤波器特性研究[J]. 计算机工程与应用, 2012, 48(8): 1-3.
[2]	韩丽娜^1，2，熊杰¹，耿国华¹，周明全³. 利用HSV空间的双通道同态滤波真彩图像增强[J]. 计算机工程与应用, 2009, 45(27): 18-20.

可调谐矩形环DGS的滤波特性研究

Study on filter properties of tunable rectangular rings Defected Ground Structure

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