Broadband Matching Bounds for Coupled Loads
Broadband Matching Bounds for Coupled Loads
复制标题
耦合负载的宽带匹配范围
DOI：
10.1109/tcsi.2015.2399026
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
B. Hochwald
中科院分区：
文献类型：
--
作者：
D. Nie;B. Hochwald
通过无源匹配网络相互连接的源和负载之间的反射系数的对数在所有频率上的积分的Bode-Fano界是匹配网络和负载的带宽的众所周知的量度。当存在由多个独立源驱动的多个耦合负载时，单个反射系数的概念并不明显，因为传递到一个负载端口的能量可能部分反射出另一个端口。建立匹配网络和负载的最大可能带宽需要发展适用于耦合系统的宽带匹配理论。我们基于耦合负载的集体功率反射的积分对数定义了一个带宽度量，并给出了这个度量的上界。这些上限可以用来研究耦合对带宽的影响，以及在任意数量的耦合负载下评估匹配网络的宽带性能。
The Bode-Fano bounds on the integral over all frequency of the logarithm of the reflection coefficient between a source and a load, connected to each other through a passive matching network, are well-known measures of the bandwidth of the matching network and load. When there are multiple coupled loads being driven by multiple independent sources, the notion of a single reflection coefficient is not obvious since energy delivered to one load port may reflect, in part, out another port. Establishing the maximum possible bandwidth of the matching network and loads requires the development of a broadband matching theory that applies to coupled systems. We define a bandwidth measure for coupled loads based on the integral logarithm of their collective power reflection, and develop upper bounds on this measure. These upper bounds can be used to examine the effects of coupling on bandwidth, and to evaluate the broadband performance of matching networks for an arbitrary number of coupled loads.