A New Balanced-to-Balanced Power Divider/Combiner
A New Balanced-to-Balanced Power Divider/Combiner
复制标题
DOI：
10.1109/tmtt.2012.2203926
复制
发表时间：
2012-07
影响因子：
4.3
通讯作者：
B. Xia;Linsheng Wu;Junfa Mao
中科院分区：
文献类型：
--
作者：
B. Xia;Linsheng Wu;Junfa Mao
本文提出了一种新的平衡到平衡功率分配器/合成器。根据混合模S参数的约束规则，利用矩阵变换，推导出了奇模和偶模电路模型的两种三端口网络。为了同时满足这两个散射矩阵的要求，适当地选择集总元件的电阻、传输线的特性阻抗和电长度。然后，设计了一种平面微带结构来实现所提出的平衡到平衡的功率分配器/合成器的等功率分配。理论分析、仿真和实测结果均表明该方案具有良好的混模性能。测量结果表明，该器件的最大差模传输系数为-3.2dB，最佳差模隔离度为47.2dB，工作带宽约为20.8%。
In this paper, a new balanced-to-balanced power divider/combiner is proposed. By using matrix transformation, two three-port networks for the odd- and even-mode circuit models are deduced, based on the constraint rules of the mixed-mode S -parameters. In order to satisfy the two required scattering matrices simultaneously, the resistances of lumped elements, the characteristic impedances and electrical length of transmission lines are selected appropriately. Then, a planar microstrip structure is designed to realize the proposed balanced-to-balanced power divider/combiner with equal power division. The theoretical, simulated and measured results all show a good mixed-mode performance. In the measurement, the maximum differential-mode transmission coefficient is -3.2 dB, the best differential-mode isolation is 47.2 dB, and the fractional bandwidth of its operating band is approximately 20.8%.