滤波器6_耦合谐振电路20120412

《滤波器6_耦合谐振电路20120412》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、《现代射频滤波器理论与设计》第6讲耦合谐振电路陈付昌,涂治红华南理工大学电子与信息学院天线与射频技术研究所TEL:22236201-604Email:zhtu@scut.edu.cnResearchInstituteofAntenna&RFTechniques第6讲内容引言耦合谐振电路的耦合矩阵一般耦合理论外部Q值SouthChinaUniversityofTechnologyResearchInstituteofAntenna&RFTechniques6.1引言耦合谐振电路是在无线通信领域中发挥着重要的作用的窄带带通滤波器设计中的一个重要

2、因素。耦合谐振电路设计滤波器的方法适用于任何类型和任何结构的滤波器。这种设计方法基于谐振器之间的耦合系数和输入输出的外部Q值。SouthChinaUniversityofTechnologyResearchInstituteofAntenna&RFTechniques6.2耦合谐振器滤波器的耦合距阵电流环路方程电压节点方程磁耦合系数电耦合系数一般耦合系数SouthChinaUniversityofTechnologyResearchInstituteofAntenna&RFTechniques6.2.1电流环路方程1RjLijL

3、ijLie1111221NNsjC11jLijLijLi0211222NNjC2SouthChinaUniversityofTechnology1jLijLiRjLi0NN1122NNNjCNResearchInstituteofAntenna&RFTechniques1RjLjLjL11121NjC1ie1s1jLi211jL2jL2Ni20jC2

4、iN01jLjLRjLNN12NNjCN[][][]ZieSouthChinaUniversityofTechnologyResearchInstituteofAntenna&RFTechniques对于同步调谐情况1,LCFBW00LLLL12NCCCC12N[]ZLFBW[]Z0RL11211L1NpjjLFBWLFBWLFBW000L11L212Njpj1[]ZLFBWLFBW000p

5、j()FBW0LL11RjjNN12NpSouthChinaUniversityofTechnology000LFBWLFBWLFBWResearchInstituteofAntenna&RFTechniques定义：耦合系数和外部Q值LMijijMmijijLFBWR1iqQFBWiN(1,)eieiLQ01e1pjmjm121Nqe1jmpjm212N[]Z1jmjmpNN12SouthChinaUnivers

6、ityofTechnologyqeNResearchInstituteofAntenna&RFTechniques对于非同步（异步）调谐情况LijMijijLLij1pjmjmjm11121Nqe1jmpjmjm21222N[]Z1jmjmpjmNN12NNqeNSouthChinaUniversityofTechnologyResearchInstituteofAntenna&RFTechniquesee2iRss11ab1122RR11ab0iR22

7、NNSouthChinaUniversityofTechnologyResearchInstituteofAntenna&RFTechniquesbb2RRi2Ri211NN11SS,12111aeae11aa00ss22eess11iZ[],iZ[]111NN1LFBWLFBW002RR1N11SZ[]121N1根据外部Q值SZ2[]21N10LFBW的定义qqee1N2R112SZ1[]11111SZ1[]1111LFBW0qe1SouthChinaUniversityofTechnol

8、ogyResearchInstituteofAntenna&RFTechniques6.2.2电压节点方程1