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微波波导法兰MM结构PIM的分析与计算
Authors
张淑娥
曹晓亚
Publication date
1 January 2018
Publisher
《光通信研究》编辑部
Doi
Cite
Abstract
随着载波功率不断提高及通信设备精巧化的发展趋势,无源器件固有的非线性会引起严重的无源互调(PIM)干扰,由此产生的影响不可忽略。针对此现象,以微波矩形波导为研究对象,考虑PIM的主要产生机理:量子隧穿效应和热电子发射效应,在波导法兰金属—金属(MM)接触模型的基础上,提出一种计算PIM功率的方法。将两种非线性效应用隧穿电阻Rnlc的I-V特性来表示,运用谐波平衡仿真和Matlab软件进行交流仿真,分析并计算流经隧穿电阻的非线性电流、其两端的压降以及波导连接中的PIM功率。结果表明,采用此方法计算得到的PIM功率随接触压力的增大先是明显下降,当压力达到一定值后,下降变缓慢且逐渐趋于平衡状态
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Last time updated on 26/01/2023