基于LTCC的高选择性混合耦合滤波器研究
发布时间：2019-06-14 00:39
【摘要】：微波滤波器是现代通信系统中的重要组件,随着信息社会的快速发展,电子产品集成度越来越高,滤波器的平面化和小型化受到越来越多的关注,同时,频谱资源日趋紧张和匮乏的现状对滤波器的频率选择性提出了更高的要求。因此,研究具有高选择性的小型化平面结构滤波器具有较高的意义和价值。本论文以实现微波滤波器的小型化和高选择性为目标,主要开展了以下的研究工作：1.提出了LTCC平面化螺旋形结构谐振器,通过电磁场图和等效电路模型分析了谐振器的工作原理。基于该螺旋形结构谐振器,构建了多种混合耦合谐振对,可以用于设计多种具有不同响应特性的二阶混合耦合滤波器。2.基于典型的螺旋形结构混合耦合谐振对,提出了三种二阶混合耦合滤波器,分别具有双边非对称零点高选择性带通响应(S1型滤波器)、双边对称零点高选择性带通响应(S2型滤波器)和单边双零点高选择性带通响应(S3型滤波器)。对混合耦合产生传输零点的原理进行了分析,给出了集总元件等效电路模型,并采用奇偶模分析法推导出零点频率的计算公式,可以用于指导电路设计。三种滤波器均采用LTCC工艺流片,测量结果和仿真结果十分吻合,验证了设计思路的可行性和准确性。滤波器的尺寸约为0.05λg×0.03λ,具有明显的小型化优势。3.基于螺旋形结构混合耦合谐振对的高选择度特性,提出了高阶混合耦合滤波器和混合耦合双工器的设计,仿真结果与预期相符。本论文提出的LTCC螺旋形结构混合耦合谐振对结构紧凑,易于实现传输零点的引入,可以推广应用到更多小型化、高选择性电路的设计中。
[Abstract]:Microwave filter is an important component in modern communication system. With the rapid development of information society, the integration of electronic products is getting higher and higher. More and more attention has been paid to the planarization and miniaturization of filter. At the same time, the increasing shortage and scarcity of spectrum resources put forward higher requirements for frequency selectivity of filter. Therefore, it is of great significance and value to study miniaturized planar structure filters with high selectivity. In order to realize the miniaturization and high selectivity of microwave filter, the main research work of this paper is as follows: 1. The LTCC planar spiral structure resonator is proposed. The working principle of the resonator is analyzed by electromagnetic field diagram and equivalent circuit model. Based on the spiral structure resonator, a variety of hybrid coupling resonance pairs are constructed, which can be used to design a variety of second-order hybrid coupling filters with different response characteristics. Based on the typical spiral hybrid coupling resonance pair, three second-order hybrid coupling filters are proposed, which have bilateral asymmetric zero high selective band pass response (S1 filter), bilateral symmetric zero high selective band pass response (S2 filter) and unilateral double zero high selective band pass response (M3 filter). In this paper, the principle of generating transmission zero by hybrid coupling is analyzed, the equivalent circuit model of lumped element is given, and the calculation formula of zero frequency is derived by using odd and even mode analysis, which can be used to guide the circuit design. The three filters all use LTCC process flow sheet, and the measurement results are in good agreement with the simulation results, which verifies the feasibility and accuracy of the design idea. The size of the filter is about 0.05 位 g 脳 0.03 位, which has obvious advantages of miniaturization. Based on the high selectivity of hybrid coupling resonance pair with spiral structure, the design of high order hybrid coupling filter and hybrid coupling duplex is proposed, and the simulation results are in good agreement with the expected results. The hybrid coupling resonance of LTCC spiral structure proposed in this paper is compact in structure and easy to realize the introduction of transmission zeros, which can be extended to the design of more miniaturized and highly selective circuits.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN713
本文编号：2498956
[Abstract]:Microwave filter is an important component in modern communication system. With the rapid development of information society, the integration of electronic products is getting higher and higher. More and more attention has been paid to the planarization and miniaturization of filter. At the same time, the increasing shortage and scarcity of spectrum resources put forward higher requirements for frequency selectivity of filter. Therefore, it is of great significance and value to study miniaturized planar structure filters with high selectivity. In order to realize the miniaturization and high selectivity of microwave filter, the main research work of this paper is as follows: 1. The LTCC planar spiral structure resonator is proposed. The working principle of the resonator is analyzed by electromagnetic field diagram and equivalent circuit model. Based on the spiral structure resonator, a variety of hybrid coupling resonance pairs are constructed, which can be used to design a variety of second-order hybrid coupling filters with different response characteristics. Based on the typical spiral hybrid coupling resonance pair, three second-order hybrid coupling filters are proposed, which have bilateral asymmetric zero high selective band pass response (S1 filter), bilateral symmetric zero high selective band pass response (S2 filter) and unilateral double zero high selective band pass response (M3 filter). In this paper, the principle of generating transmission zero by hybrid coupling is analyzed, the equivalent circuit model of lumped element is given, and the calculation formula of zero frequency is derived by using odd and even mode analysis, which can be used to guide the circuit design. The three filters all use LTCC process flow sheet, and the measurement results are in good agreement with the simulation results, which verifies the feasibility and accuracy of the design idea. The size of the filter is about 0.05 位 g 脳 0.03 位, which has obvious advantages of miniaturization. Based on the high selectivity of hybrid coupling resonance pair with spiral structure, the design of high order hybrid coupling filter and hybrid coupling duplex is proposed, and the simulation results are in good agreement with the expected results. The hybrid coupling resonance of LTCC spiral structure proposed in this paper is compact in structure and easy to realize the introduction of transmission zeros, which can be extended to the design of more miniaturized and highly selective circuits.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN713
【参考文献】
相关硕士学位论文 前1条
1 欧阳霄;混合电磁耦合滤波器研究[D];华南理工大学;2012年
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