平面微波双宽带带通滤波器研究与实现
发布时间：2019-06-02 14:18
【摘要】：随着现代通信技术的迅猛发展，无线通信已经成为带动信息行业发展的重要力量。作为无线通信系统射频前端的重要组成部分，微波滤波器对系统性能影响巨大。为了满足不同通信模式和用户对高速数据迫切需求，现代通信系统需要融合多频段技术和宽带技术的器件。因此，开展双宽带滤波技术研究，为无线通信中提供体积小，性能好的双宽带带通滤波器具有重要的意义。论文主要研究了无线通信中的双宽带带通滤波器，着重分析了双宽带滤波器的设计理论和构造技术。本文的主要工作如下： 首先，基于枝节加载谐振器，提出了一种的混合槽线/微带线的双宽带带通滤波器。以一个多枝节加载的多模槽线谐振器为核心，加以微带馈电，形成一个具有宽带带通特性的滤波器。进一步，在介质基板上叠加一个枝节加载的双模微带谐振器，在通带内实现了两个传输零点，把一个极宽通带分成两个宽通带，从而实现了双宽带滤波器。基于这种新型结构，设计了一个相对带宽分别为49.6%和65.6%的双宽带带通滤波器。加工后仿真结果与测试结果吻合很好，，验证了提出的结构和设计理论。 其次，基于三角环形谐振器加载的槽线，提出了一种的混合槽线/微带线的双宽带带通滤波器。滤波器由一个双枝节加载的多模槽线谐振器和一个三角环形双模微带谐振器构成。加载在槽线谐振器上方的三角环形双模微带谐振器在在槽线的激励下，简并模式分离，在滤波器的通带内产生了两个传输零点，把一个通带分裂成两个宽频的通带，实现了双宽带带通滤波器。通过一个传输线模型对三角环形微带谐振器加载的槽线进行分析，EM仿真结果和理论结果一致性很好。基于这一结构，为无线通信设计了一个相对带宽分别为51.3%和48.7%的双宽带滤波器，理论结果和测试结果吻合很好。 最后，提出了一种基于横向信号干扰理论的双宽带滤波器。结合横向信号干扰理论的基本思路，利用两条支路的信号干扰特性，实现了双宽带带通特性的滤波器。用一个传输线模型对提出的滤波器结构进行分析，滤波器零点和极点的位置可以由传输线的参数控制。利用这一结构，实现了一种中心频率在1.7/3.2GHz双宽带带通滤波器，两个通带的相对带宽分别为73%和35%。
[Abstract]:With the rapid development of modern communication technology, wireless communication has become an important force to drive the development of information industry. As an important part of RF front-end of wireless communication system, microwave filter has a great influence on system performance. In order to meet the urgent needs of different communication modes and users for high-speed data, modern communication systems need devices that combine multi-band technology and broadband technology. Therefore, it is of great significance to carry out the research of dual broadband filtering technology to provide small size and good performance dual broadband bandpass filter for wireless communication. In this paper, the dual broadband bandpass filter in wireless communication is studied, and the design theory and construction technology of the dual broadband filter are analyzed. The main work of this paper is as follows: firstly, a hybrid slot line / microstrip double broadband bandpass filter is proposed based on branch loaded resonator. Taking a multi-mode slot line resonator loaded by multiple branches as the core, a filter with broadband band-pass characteristics is formed by microstrip feed. Furthermore, a branch loaded dual-mode microstrip resonator is superimposed on the dielectric substrate, and two transmission zeros are realized in the passband, and a very wide passband is divided into two wide passbands, thus a double broadband filter is realized. Based on this new structure, a double broadband bandpass filter with relative bandwidth of 49.6% and 65.6% is designed. The simulation results after machining are in good agreement with the test results, and the proposed structure and design theory are verified. Secondly, based on the slot line loaded by triangular ring resonator, a dual broadband bandpass filter with hybrid slot line / microstrip line is proposed. The filter is composed of a multi-mode slot line resonator loaded with double branches and a triangular ring dual-mode microstrip resonator. The triangular ring dual mode microstrip resonator loaded above the slot line resonator is excited by the slot line and the degeneracy mode is separated. Two transmission zeros are generated in the pass band of the filter, and one passband is divided into two broadband passbands. The dual broadband bandpass filter is realized. The slot line loaded by triangular ring microstrip resonator is analyzed by a transmission line model. The EM simulation results are in good agreement with the theoretical results. Based on this structure, a dual broadband filter with relative bandwidth of 51.3% and 48.7% is designed for wireless communication, and the theoretical results are in good agreement with the test results. Finally, a double broadband filter based on transverse signal interference theory is proposed. Combined with the basic idea of transverse signal interference theory, the filter with double broadband band-pass characteristics is realized by using the signal interference characteristics of two branches. A transmission line model is used to analyze the proposed filter structure. The position of the zero and pole of the filter can be controlled by the parameters of the transmission line. Using this structure, a double broadband bandpass filter with central frequency in 1.7/3.2GHz is implemented. The relative bandwidth of the two passbands is 73% and 35%, respectively.
【学位授予单位】：华东交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN713.5
本文编号：2491168
[Abstract]:With the rapid development of modern communication technology, wireless communication has become an important force to drive the development of information industry. As an important part of RF front-end of wireless communication system, microwave filter has a great influence on system performance. In order to meet the urgent needs of different communication modes and users for high-speed data, modern communication systems need devices that combine multi-band technology and broadband technology. Therefore, it is of great significance to carry out the research of dual broadband filtering technology to provide small size and good performance dual broadband bandpass filter for wireless communication. In this paper, the dual broadband bandpass filter in wireless communication is studied, and the design theory and construction technology of the dual broadband filter are analyzed. The main work of this paper is as follows: firstly, a hybrid slot line / microstrip double broadband bandpass filter is proposed based on branch loaded resonator. Taking a multi-mode slot line resonator loaded by multiple branches as the core, a filter with broadband band-pass characteristics is formed by microstrip feed. Furthermore, a branch loaded dual-mode microstrip resonator is superimposed on the dielectric substrate, and two transmission zeros are realized in the passband, and a very wide passband is divided into two wide passbands, thus a double broadband filter is realized. Based on this new structure, a double broadband bandpass filter with relative bandwidth of 49.6% and 65.6% is designed. The simulation results after machining are in good agreement with the test results, and the proposed structure and design theory are verified. Secondly, based on the slot line loaded by triangular ring resonator, a dual broadband bandpass filter with hybrid slot line / microstrip line is proposed. The filter is composed of a multi-mode slot line resonator loaded with double branches and a triangular ring dual-mode microstrip resonator. The triangular ring dual mode microstrip resonator loaded above the slot line resonator is excited by the slot line and the degeneracy mode is separated. Two transmission zeros are generated in the pass band of the filter, and one passband is divided into two broadband passbands. The dual broadband bandpass filter is realized. The slot line loaded by triangular ring microstrip resonator is analyzed by a transmission line model. The EM simulation results are in good agreement with the theoretical results. Based on this structure, a dual broadband filter with relative bandwidth of 51.3% and 48.7% is designed for wireless communication, and the theoretical results are in good agreement with the test results. Finally, a double broadband filter based on transverse signal interference theory is proposed. Combined with the basic idea of transverse signal interference theory, the filter with double broadband band-pass characteristics is realized by using the signal interference characteristics of two branches. A transmission line model is used to analyze the proposed filter structure. The position of the zero and pole of the filter can be controlled by the parameters of the transmission line. Using this structure, a double broadband bandpass filter with central frequency in 1.7/3.2GHz is implemented. The relative bandwidth of the two passbands is 73% and 35%, respectively.
【学位授予单位】：华东交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN713.5
【参考文献】
相关博士学位论文 前1条
1 吴小虎;高性能多频及宽带滤波器的研究[D];华南理工大学;2013年
本文编号：2491168
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