新型DGS双频Wilkinson功分器的研究与设计  

Design of Dual-Band Wilkinson Power Divider Defected Using Ground Structure

作　　者：杨瑾屏[1] 吴文[1] 

机构地区：[1]南京理工大学近程高速目标探测技术国防重点学科实验室,江苏南京210094

出　　处：《电子学报》2009年第2期338-341,共4页Acta Electronica Sinica

摘　　要：本文在多节阻抗变换器基础上嵌入螺旋型缺陷地结构(SP-DGS)以满足功分器所需阻抗和相位条件,从而实现了在两个任选的工作频率上同时具有良好功率传输、匹配和隔离特性的新型功分器设计.该设计的突出优点是所需电抗可由SP-DGS结构精确实现,整个设计过程严密而不失灵活性.最后,采用上述方法设计并研制了一个2.4GHz/5.8GHz双频功分器,工作频带内的最大插损分别是0.1dB和0.4dB,回波损耗和隔离度均优于15dB.A novel compact dual-band Wilkinson power divider（PD） is researched,which consists of tri-sections impedance transformer integrated with a spiral defected ground structure（SP-DGS）.To satisfy the impedance and phase conditions by using SP-DGS,the characteristics of PD such as an equal power split,impedance matching at all ports,and a good isolation between the two output ports are fulfilled at two arbitrary given frequencies simultaneously.The main advantage of this design is that the required reactance is accurately realized by SP-DGS.The design process and formulas are also given,which are strict but flexible.Finally,a 2.4 GHz/5.8 GHz dual-band PD is developed.Measured results show that the maximal passband insert-loss is 0.1dB and 0.4dB,and the return loss and isolation are both more than 15 dB in a wide frequency range.

关 键 词：功分器 双频段 阻抗变换器 DGS 

分 类 号：TN011[电子电信—物理电子学]