双频Wilkinson功分器设计+文献综述
关键词:功分器,奇-偶模分析,双频,微带,带宽
Title Title Title Title Dual-frequency Wilkinson power pider
Abstract Abstract Abstract Abstract
With the development of the modern communication technique, there has
been increasing interest in study on dual-frequency and multi-frequency
microwave circuits for complete utilization of spectrum resources. Power
pider is an important passive microwave component and widely used in
electronic communication systems. Design of dual-frequency power pider
is investigated in this paper, which do much benefit to engineering
application.
Firstly, traditional Wilkinson power pider is analyzed based on
odd-even mode method to interpret its operating principle for desired
performance. Base on above analysis, a design of dual-frequency Wilkinson
power pider is presented with a novel structure. An open-circuit
microstrip-line is shunted at the outputs of the transmission line
impedance transitions to achieve dual-frequency operation. A pider
operating at 3GHz and 6GHz is successfully designed with HFSS software.
Simulated results show that dual-frequency is achieved; return loss at
input port is larger than 20dB, and isolation between two outputs better
than 15dB. This design with planar structure has desired prospect in
communication circuits.
Keywords ： power pider, odd-even mode analysis, dual-frequency,
microstrip,bandwith 目 次
1 绪论 1
1.1 多频功分器的研究背景 1
1.2 本文工作 1
2 微带功分器 2
2.1 三端口网络（T型结）2
2.2 Wilkinson功分器3
2.2.1 偶模分析 4
2.2.2 奇模分析 6
2.3 微带线简介7
3 双频Wilkinson 功分器设计10
3.1 双频Wilkinson 功分器原理分析10
3.1.1 奇偶模分析 11
3.1.2 双频分析13
3.2 双频Wilkinson 仿真设计13
3.2.1 设计计算 13
3.2.2 仿真模型15
3.2.3 仿真结果图16
3.3 实验结果分析18
结论 18
致谢 19
参考文献 19 1 绪论 绪论 绪论 绪论
1.1 多频功分器的研究背景 多频功分器的研究背景 多频功分器的研究背景 多频功分器的研究背景
随着移动通信的飞速发展，微波频段的使用越来越拥挤，同时，射频电路集成化要求程度也
越来越高，除了要求优良的性能外，还提出了低成本，低损耗，小体积和轻重量等要求，因此能