等分威尔金森功分器的设计

摘 要

摘 要

本文对一个等分威尔金森功分器进行了仿真，分析了功分器的基本原理，介绍了ADS软件基本使用方法，并选择了频率范围：0.9～1.1GHz，频带内输入端口的回波损耗：C11>20dB，频带内的插入损耗：C21<3.1dB,C31<3.1dB，两个输出端口间的隔离度：C23>25dB为设计指标的等分威尔金森功分器。先进行威尔金森功分器原理图的设计，再用ADS软件进行原理图仿真，得出的结论采用理论计算的结果作为功分器参数时，功分器并没有达到所需设计的指标，所以要对功分器的各个参数进行优化。优化后所得到的最佳数据保存以后再进行功分器版图的仿真，各项指标基本达到设计所需的要求。

关键词：仿真，威尔金森功分器，ADS，优化

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ABSTRACT

ABSTRACT

In this paper a power dividers quintiles Wilkinson is simulated, and analyzes the basic principle of power dividers, introduces the basic use ADS software method, and choose the frequency range: 0.9～GHz, frequency band 1.1 input ports C11 > 20dB return loss:, frequency band insertion loss: C21 < 3.1 dB, C31 < 3.1 dB, between the two output port C23 > 25dB isolation ratio: for the design index equal power dividers Wilkinson. First conducts the power dividers Wilkinson schematic design, reoccupy ADS software simulation principle diagram, the conclusion of the theoretical calculation result as parameters when power dividers power dividers did not reach the required design to index, so the power dividers various parameters were optimized. After optimization of the best data preserves received after power dividers again, and all the indexes of simulation territory to meet the design requirements of basic required.

Key words：Simulation Wilkinson Power dividers ADS optimization

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目 录

目 录

第1章 引言 ......................................................... 1 1.1 功分器的发展概述 ................................................ 1 1.2本次设计的主要工作 .............................................. 3 第2章 功分器的技术基础 ............................................. 4 2.1基本工作原理 .................................................... 4 2.2 功分器的技术指标 ................................................ 6 第3章 ADS介绍 ..................................................... 8 3.1 ADS发展概述 .................................................... 8 3.2 ADS 的仿真设计方法 .............................................. 9 3.3 ADS的辅助设计功能 ............................................. 10 3.4 ADS与其他EDA软件和测试设备间的连接 ........................... 15 3.5 ADS应用结论 ................................................... 15 第4章 功分器的原理图设计、仿真与优化 .............................. 16 4.1等分威尔金森功分器的设计指标 ................................... 16 4.2建立工程与设计原理图 ........................................... 16 4.3基本参数设置 ................................................... 16 4.4功分器原理图仿真 ............................................... 19 4.5功分器的电路参数的优化 ......................................... 26 第5章 功分器版图的生成与仿真 ...................................... 28 5.1功分器版图的生成 ............................................... 28 5.2功分器版图的仿真 ............................................... 34 第6章 结论 ........................................................ 37 参考文献 ........................................................... 38 致谢 ............................................................... 35 外文资料原文 ....................................................... 36 译文 ............................................................... 44

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主要符号表

主要符号表

P1...................................................1端口的输入功率

P2...................................................2端口的输出功率

P3...................................................3端口的输出功率 Z0..................................................输入端口特性阻抗 Z02..........................................?4分支微带线的特性阻抗 Z03..........................................?4分支微带线的特性阻抗 R2.................................................2端口接的负载电阻

R3.................................................3端口接的负载电阻 U2.....................................................2端口输入电压

U3.....................................................3端口输入电压 Zin2....................................................2端口输入阻抗 Zin3....................................................3端口输入阻抗 Pr..........................................................反射功率

Pi..........................................................入射功率 端口1的反射系数 S11.....................................端口2匹配时，

端口1到端口2的正向传输系数 S21.........................端口2匹配时，

端口1到端口3的正向传输系数 S31.........................端口3匹配时，

C11..........................................................回波损耗 C21..........................................................插入损耗

C31..........................................................插入损耗 C23...........................................................隔离度

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