Lumped-element filtering power dividers
Lumped-element filtering power dividers
复制标题
集总元件滤波功率分配器
DOI：
10.1002/cta.2553
复制
发表时间：
2019
影响因子：
2.3
通讯作者：
Xiao Fei
中科院分区：
文献类型：
--
作者：
Xiao Fei
功率分配器是理想的对两个或多个输入信号进行矢量求和的无损互反器件，是无线通信系统或雷达系统中极其重要的电路元件。本文讨论了集总元功率分压器的一般概念。然后，提出了一种半解析合成技术。提出了多端口对称网络的通用奇模和偶模分析方法，并将其应用于n路集总元功率分配器的分析。传输网络和匹配网络可以逐步合成，大大简化了它们的分析。传输网络可以采用两端口网络合成技术进行合成，从而可以精确地控制功率分配器的传输特性。通过优化确定匹配网络，保证输出端口之间具有一定的隔离性。设计过程简单、准确。除功率分配器的功能外，功率分配器还可以起到阻抗变换和信号处理的作用。文中给出了一些具有滤波功能的功率分压器的实例。本文讨论了集总元功率分压器的一般概念。然后，提出了一种半解析合成技术。提出了多端口对称网络的通用奇模和偶模分析方法，并将其应用于n路集总元功率分配器的分析。传输网络和匹配网络可以逐步合成，大大简化了它们的分析。除功率分配器的功能外，功率分配器还可以起到阻抗变换和信号处理的作用。
A power divider is ideally a lossless reciprocal device performing vector summation of two or more input signals, which is an extremely important circuit component in wireless communication systems or radar systems. In this paper, a general concept of lumped‐element power divider is discussed. Then, a semi‐analytical synthesis technique is presented. General odd‐mode and even‐mode analysis method is proposed for multi‐port symmetrical network and applied in the analysis ofN‐way lumped‐element power dividers. The transmission networks and the matching networks can be synthesized step by step, which greatly simplify their analysis. The transmission networks can be synthesized by those well‐known synthesis techniques for two‐port networks, and thus the transmission property of power dividers can be accurately controlled. The matching networks are determined by optimization to ensure certain isolation between the output ports. The design procedure is simple and accurate. Apart from the capability of power division, power dividers are also able to play the role of impedance transform and signal processing. Some examples of power dividers with filtering capability are presented for demonstration. In this paper, a general concept of lumped‐element power divider is discussed. Then, a semi‐analytical synthesis technique is presented. General odd‐mode and even‐mode analysis method is proposed for multi‐port symmetrical network and applied in the analysis ofN‐way lumped‐element power dividers. Transmission networks and matching networks can be synthesized step by step, which greatly simplify their analysis. Apart from the capability of power division, power dividers are also able to play the role of impedance transform and signal processing.