论文标题
使用传输线的一般解耦网络的合成
Synthesis of General Decoupling Networks Using Transmission Lines
论文作者
论文摘要
在本文中，我们引入了一种用于传输线基的脱钩网络的综合技术，该技术在耦合系统中找到应用，例如多 - 安特纳系统和紧凑的天线阵列。采用广义$π$ - 网络和传输线分析技术，我们将解耦网络设计减少到简单的矩阵计算中。合成的解耦网络本质上是一个通用的$π$ - 网络，所有分支机构都具有传输线。选择了$3λ/8 $和$5λ/8 $的标准电气长度来简化物理实现，从而使传输线分支的特征阻抗是主要设计参数。该提出的去耦网络的优点是，与集团组件相比，可以使用传输线实现它，以确保更好地控制损失，性能一致性和更高的功率处理能力，并且可以在不同频率下轻松缩放以进行操作。分别研究了在1.2 GHz处的两个端口微带天线系统和1 GHz处的三个端口单子天线系统，以证明在两个设计频率下都可以实现所提出的合成方法的有效性和完美的解耦（$ S_ {21}} <-50 $ DB）。
In this paper, we introduce a synthesis technique for transmission line based decoupling networks, which find application in coupled systems such as multiple-antenna systems and compact antenna arrays. Employing the generalized $π$-network and the transmission line analysis technique, we reduce the decoupling network design into simple matrix calculations. The synthesized decoupling network is essentially a generalized $π$-network with transmission lines at all branches. A standard electrical length of $3λ/8$ and $5λ/8$ are chosen to simplify the physical implementation, leaving the characteristic impedances of the transmission line branches the main design parameters. The advantage of this proposed decoupling network is that it can be implemented using transmission lines, ensuring better control on loss, performance consistency and higher power handling capability when compared with lumped components, and can be easily scaled for operation at different frequencies. A two-port microstrip antenna system at 1.2 GHz and a three-port monopole antenna system at 1 GHz are investigated respectively to demonstrate the validity of the proposed synthesis method, and perfect decoupling ($S_{21}<-50$dB) are achieved at both design frequencies.
