不等分微带功分器设计

本科毕业设计

（2011届）

题目不等分微带功分器设计

学院电子信息学院

专业电子科学与技术

班级

学号

学生姓名

指导教师

完成日期2011年3月

诚信承诺

我谨在此承诺：本人所写的毕业论文《不等分微带功分器设计》均系本人独立完成，没有抄袭行为，凡涉及其他作者的观点和材料，均作了注释，若有不实，后果由本人承担。

承诺人（签名）：

年月日

摘要

在无线通讯射频电路中经常会遇到要求射频功率不平衡分配的情况，因此不等分功分器在实际射频电路中有着重要的应用价值。微带线具有体积小、易加工、易集成等优点，而被广泛应用于射频微波集成电路中。因此本毕业设计主要是针对微带线型不等分功分器的研究而展开的。不等分微带功分器相对于等分微带功分器而言，设计难度要更为复杂一点，需要考虑的影响因素要更多一些。本次设计中，通过对Wilkinson微带功分器的研究，提出了不等分微带功分器的设计理论。在此理论基础上，利用Advance Design System射频微波电路仿真软件，设计了两款一分二不等分的微带型功率分配器（功分比例分别为1:2，3:4）。实验和仿真结果一致，并满足设计指标要求，从而论证了不等分微带型功率分配器设计理论的正确性。

关键词：不等分；微带；功分器；ADS软件；射频

ABSTRACT

RF circuits in wireless communications requirements often encountered in the power imbalance in the distribution of radio frequency, ranging from sub-splitters so the actual RF circuit has important application value.Microstrip line is small, easy processing, easy integration, etc., which are widely used in microwave integrated circuits in RF.Therefore, this graduation design mainly for microstrip line power splitter sub-ranging research undertaken. Ranging from sub-microstrip power divider relative to the attainment of microstrip power divider, the design is difficult to be more complex, factors to be considered to be more of them.The design, by microstrip Wilkinson power divider on the research,proposed ranging from sub-microstrip power splitter design theory. Based on this theory, the use of Advance Design System RF and microwave circuit simulation software, designed two points of a sub-second range Microstrip power splitter (power divider ratio was1:2,3:4).Experimental and simulation results are consistent and meet the design requirements, which demonstrates the range Microstrip power splitter sub-design theory is correct.

Key words: unequal; microstrip; power divider; advance design system software; RF

目录

1 引言-------------------------------------------------------------------------------------------1

2 概述--------------------------------------------------------------------------------4

2.1 不等分功分器中的微带线-------------------------------------------------------4

2.1.1 微带线的定义----------------------------------------------------------------------4

2.1.2 微带线的结构----------------------------------------------------------------------4

2.1.3微带线计算-------------------------------------------------------------------------5

2.1.5微带线常用材料-------------------------------------------------------------------6

2.2 功分器------------------------------------------------------------------7

2.2.1 功率分配器定义-------------------------------------------------------------------7

2.2.2 功率分配器的工作原理----------------------------------------------------------8

2.2.3 微带线功率分配器----------------------------------------------------------------9

3 总体设计---------------------------------------------------------------------------------12

4 软件设计--------------------------------------------------------------------------------13

4.1 ADS软件--------------------------------------------------------------------13

4.1.1 ADS软件介绍---------------------------------------------------------------------13

4.1.2 ADS仿真分析---------------------------------------------------------------------13

4.2 总体方案-----------------------------------------------------------------------------15

4.3 程序流程--------------------------------------------------------------------------16

5 制作与调试--------------------------------------------------------------------------------27

5.1 硬件电路--------------------------------------------------------------------------27

5.2 调试--------------------------------------------------------------------------------27结论----------------------------------------------------------------------------------------------31致谢----------------------------------------------------------------------------------------------32参考文献----------------------------------------------------------------------------------------33