摘要论文首先详细的介绍了PIN管的工作原理、特性，在此基础上再细述PIN开关设计的基本理论。对开关设计理论做一个较为全面的总结之后，设计出一个低损耗、高隔离度的串并联单刀单掷开关。仿真结果表明，设计出来的单刀单掷开关在4-15GHz的工作频带内，插入损耗小于1.5dB,隔离度大于60dB，驻波比小于1.2。对设计出来的单刀单掷开关进行一定的完善之后，以其为基础设计出单刀五掷和单刀九掷开关。经过仿真验证，所设置的单刀五掷和单刀九掷开关的指标都符合理论要求：在4-15GHz的工作频带内，插入损耗小于1.2，隔离度大于60dB，驻波比小于1.2。最后，把九个单刀五掷开关和五个单刀九掷开关组合起来，构成一个9×5开关阵。在整个电路设计过程中，采取了ADS2008仿真软件进行仿真，仿真结果和理论值基本一致，验证了设计的合理性和有效性。电路性能基本上达到了设计的要求。对于开关阵的设计研究具有一定的参考价值。64899

毕业论文关键词：PIN管、微波开关、开关阵列

毕业设计说明书（论文）外文摘要

Title    RF switch array design                     

Abstract Firstly, paper introduces the working principle, characteristics of PIN tube in detail, then introduces the basic theory of PIN switch design based on the theory above . After a comprehensive summary of switch design theory, design a low loss and high isolation ratio of parallel single pole, single throw switch. Simulation results show that the designed single-pole single-throw switch, within 4-15 GHZ working frequency band is less than 1.5 dB insertion loss and isolation degree greater than 60 dB, standing wave ratio is less than 1.2. After the designed single-pole single-throw switch must be perfect, design single pole five throw and single-pole nine throw switch based on the SPST designed above. Through simulation, the SP5T and SP9T switch designed are conform to the requirements of the theory, work in the 4-15 GHZ frequency band, insertion loss is less than 1.2, the segregation degree greater than 60 db, standing wave ratio is less than 1.2. Finally, put the nine SP5T switch and five SP9T switch together, constitute a 9 x 5 switch array. Circuit performance basically reached the design requirements. To the design of the switch array study has certain reference value.

Keywords：PIN tube、microwave switch、switch array

目  次

1  绪论 1

1.1  研究背景及意义 1

1.2  PIN开关的研究现状和发展趋势 1

1.3  本论文的主要工作 2

2  PIN二极管的基本原理 2

2.1  PIN管工作原理 2

2.2  PIN管的等效电路 5

2.3  PIN管的主要参数 7

3  PIN微波开关基础理论 9

3.1  单刀单掷开关的基本理论 10

3.2  阵列式开关的基本理论 12

3.3  串并联式开关的基本理论 14

3.4  单刀双掷开关（SPDT)的基本理论 15

3.5  开关的基本指标