衬底型五级超宽带带状线耦合器的设计  

Design of 5-stage ultra-wide-band stripline coupler with underlay structure

作　　者：姬五胜[1,2] 彭清斌[3] 张需溥 陈玉兵 王大朋 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071 [2]兰州城市学院电子信息科学与技术研究所,甘肃兰州730070 [3]兰州理工大学计算机与通信学院,甘肃兰州730050 [4]杭州紫光网络技术有限公司,浙江杭州310012

出　　处：《兰州理工大学学报》2009年第6期101-104,共4页Journal of Lanzhou University of Technology

基　　金：甘肃省自然科学基金(3ZS061-A25-058)

摘　　要：设计一种0．35～3．80GHz频段的6dB五级超宽带祸合器．耦合器前两级采用衬底型平行耦合带状线结构，后三级采用传统侧边耦合带状线结构．在带状线级联处加载客性开路膜片补偿电路，改善电路的匹配性能，降低器件的回波损耗．衬底型紧褐合结构克服了印刷电路工艺对耦合带状线线间距的限制，且不需要高分辨率的制作过程，也不会引入焊点等不连续性结构．仿真的耦合系数和实测数据有较好的一致性．A 6-dB coupler worked in 5-stage ultra-wide-band from 0. 35 to 3.8 GHz was designed. In this coupler, first two stages had underlay structure and following three stages were of conventional sided coupling stripline structure. A capacitive opened film compensating circuit was loaded at the cascade spots of the striplines for improving the matching performance of the circuit and reducing the return loss of the device. By using this underlay tight coupling structure, the limits on the interval of coupling striplines with printed circuit processing were overcome, a high resolution was unnecessary for device fabrication, and the discontinuity in the circuit such as the wire bonding would not occur. The measured coupling coefficient showed a good agreement with that of electromagnetic simulations.

关 键 词：定向耦合器 耦合带状线 衬底型结构 容性开路膜片 

分 类 号：TN622[电子电信—电路与系统]