一种新型双层介质结构Butler矩阵研究  

Research on a Novel Bilayer Substrate Butler Matrix

作　　者：丁轲佳[1] 贺斐[2] 吕善伟[2] 熊小军[1] 

机构地区：[1]北京航空航天大学无人驾驶飞行器设计研究所,北京100191 [2]北京航空航天大学电子信息工程学院,北京100191

出　　处：《宇航计测技术》2013年第1期4-9,共6页Journal of Astronautic Metrology and Measurement

摘　　要：提出并实现一种基于双层微带结构的新型8×8 Butler矩阵。利用双层微波电路结构将器件分置于上下层以省略跨接器;采用两段近似λg/8阶梯耦合微带线Schiffman结构实现宽频带移相;采用三分支线定向耦合器作为宽带电桥。采用该方法设计并实现工作于C波段的8×8 Butler矩阵样品;实测结果表明,其可在(4.2～5.3)GHz范围内实现各端口回波损耗不大于10dB、端口隔离不小于17dB、功分比误差不超过±1.5dB、相位误差不大于±12°等指标,实测平均插入损耗约2.5dB。新型Butler矩阵较之采用跨接器的经典结构损耗小,更加适用于较大规模多波束成型网络。A kind of novel 8x8 Butler matrix based on multi-layer substrate structure is presented and realized. A bilayer substrate structure is adopted to distribute components into the up and down layer to replace crossover. Two approximate kg/8 stepped coupling microstrip Schiffman phase shifter is used to realize wideband phase shift. A three-branch line coupler is employed as wideband bridge. An 8x8 But- ler matrix sample working in C band frequency is designed and fabricated. The measured results indicate that in the frequency range over （4.2 - 5.3） GHz, the return loss of each port is better than -lOdB, the isolation is better than 17dB, the distribution error is less than ＋ldB, the phase error is less than ±12° and the measured average insert loss is about 2.5dB. over, the novel Butler matrix has lower loss and better work. Compared with conventional structure with cross- adaptability to large scale multi-beam forming net-

关 键 词：BUTLER矩阵 多层介质 Schiffman移相器 宽带 

分 类 号：TN011.4[电子电信—物理电子学]