基于传输线理论的零阶谐振器FDTD分析与优化  

FDTD Analysis and Optimization for Zeroth-Order Resonator Based on Transmission Line Theory

作　　者：何锴[1] 孔凡敏[1] 李康[1] 

机构地区：[1]山东大学信息科学与工程学院,山东济南250100

出　　处：《系统仿真学报》2008年第9期2300-2302,2306,共4页Journal of System Simulation

基　　金：山东省自然科学基金(Y2005G19)

摘　　要：通过FDTD数值仿真,完全由电路理论所描述的零阶谐振器特性得到了证实。通过对电路参数的研究可以更好的定性分析零阶谐振器特性:谐振频点的数量取决于单元结构的个数,而零阶谐振频率是不依赖于结构长度的。改变短路电感的长度及金属导孔的位置,可以调整零阶谐振频率。通过对结构的进一步优化,可以获得一个更小的1.5个单元结构零阶谐振器模型,该模型在1.9GHz频率上具有较好的无负载品质因数Q。The zeroth-order resonator （ZOR） characteristic which is fully described by the circuit theory is confirmed with the FDTD numerical simulation, Parametric studies performed on the circuit parameters led to a better qualitative analysis for the ZORs： the number of resonant frequency is determined by the number of unit cells in the structure of the ZORs, while the zeroth-order resonant frequency is independent of the physical length. Further more, the zeroth-order resonant frequency can be adjusted by changing the length of shorted stub inductor or the direction of via. The ZOR structure based on composite right/left-handed transmission line （CRLH-TL） is optimized and a smaller area is obtained for the 1.5-cell ZOR with a good unloaded 0 at 1.9GHz in the numerical simulation.

关 键 词：传输线理论 混合左右手传输线 零阶谐振器 FDTD 

分 类 号：TN811[电子电信—信息与通信工程]