微带可调滤波器的研究与设计
发布时间：2019-01-18 13:36
【摘要】：随着现代无线通信技术的快速发展,频率拥挤的问题日益突出,为了提高频谱资源的利用率,扩频、跳频和动态频率分配等技术得到广泛的应用,可调滤波器作为实现这些技术的关键器件也得到越来越多的研究。小型化、高性能、调谐速度快、调谐范围宽等成为可调滤波器设计的要求。 本文首先介绍了可调滤波器的研究意义和研究现状；其次介绍了传统滤波器的基本原理和综合方法,为可调滤波器的设计奠定了理论基础。最后利用可调滤波器的设计理论并结合可调滤波器的最新进展和应用需求,设计了两种不同类型的可调滤波器：具有宽阻带特性的小型化低通可调滤波器和绝对带宽恒定的可调滤波器。 基于小型化、宽阻带的设计目标,本文完成了微带低通/低通可调滤波器两种滤波器的设计。首先对阶梯阻抗谐振器、三角形谐振器、蝶形谐振器的谐振特性进行理论分析,通过谐振器加载技术和慢波设计形式设计了一种结构紧凑并能抑制高次谐波的低通滤波器；其次基于低通可调滤波器的研究现状,并结合对其的应用需求,利用类似的方法又设计了一种具有宽阻带特性的小型化低通可调滤波器。 在绝对带宽恒定的可调滤波器设计方面,我们首先对绝对带宽恒定的可调滤波器的典型设计方法进行分析总结,并利用奇偶模分析法分析了E型多模可调谐振器的谐振特性。利用该E型多模可调谐振器设计了绝对带宽恒定的小型化可调滤波器。其次为了解决此滤波器中的一些不足实现性能更好的可调滤波器,在此滤波器结构的基础上作些改进从而实现了另一种类型的绝对带宽不变的可调滤波器,并对该滤波器进行加工测试,验证了设计方法的有效性。
[Abstract]:With the rapid development of modern wireless communication technology, the problem of frequency congestion has become increasingly prominent. In order to improve the utilization of spectrum resources, spread spectrum, frequency hopping and dynamic frequency allocation technology has been widely used. Tunable filter as the key device to realize these technologies has been studied more and more. Miniaturization, high performance, high tuning speed and wide tuning range are the requirements of tunable filter design. In this paper, the research significance and current situation of tunable filter are introduced firstly, and then the basic principle and synthesis method of traditional filter are introduced, which lays a theoretical foundation for the design of tunable filter. Finally, using the design theory of tunable filter, combined with the latest development and application requirements of tunable filter, Two different types of tunable filters are designed: miniaturized low-pass tunable filters with wide stopband characteristics and tunable filters with constant absolute bandwidth. Based on the design goal of miniaturization and wide stopband, two kinds of microstrip low pass / low pass tunable filters are designed in this paper. Firstly, the resonant characteristics of step impedance resonator, triangular resonator and butterfly resonator are theoretically analyzed. A compact low-pass filter is designed by using the resonator loading technique and slow wave design. Secondly, based on the research status of low pass tunable filter and its application requirements, a miniaturized low pass tunable filter with wide stopband characteristics is designed by using similar methods. In the design of tunable filters with constant absolute bandwidth, we first analyze and summarize the typical design methods of tunable filters with constant absolute bandwidth, and analyze the resonance characteristics of E type multi-mode tunable resonators by using the method of odd-even mode analysis. A miniaturized tunable filter with constant absolute bandwidth is designed by using the E type multimode tunable resonator. Secondly, in order to solve some shortcomings of this filter, the tunable filter with better performance is realized. Based on the structure of the filter, an improvement is made to realize another type of tunable filter with constant absolute bandwidth. The filter is processed and tested to verify the effectiveness of the design method.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN713
本文编号：2410772
[Abstract]:With the rapid development of modern wireless communication technology, the problem of frequency congestion has become increasingly prominent. In order to improve the utilization of spectrum resources, spread spectrum, frequency hopping and dynamic frequency allocation technology has been widely used. Tunable filter as the key device to realize these technologies has been studied more and more. Miniaturization, high performance, high tuning speed and wide tuning range are the requirements of tunable filter design. In this paper, the research significance and current situation of tunable filter are introduced firstly, and then the basic principle and synthesis method of traditional filter are introduced, which lays a theoretical foundation for the design of tunable filter. Finally, using the design theory of tunable filter, combined with the latest development and application requirements of tunable filter, Two different types of tunable filters are designed: miniaturized low-pass tunable filters with wide stopband characteristics and tunable filters with constant absolute bandwidth. Based on the design goal of miniaturization and wide stopband, two kinds of microstrip low pass / low pass tunable filters are designed in this paper. Firstly, the resonant characteristics of step impedance resonator, triangular resonator and butterfly resonator are theoretically analyzed. A compact low-pass filter is designed by using the resonator loading technique and slow wave design. Secondly, based on the research status of low pass tunable filter and its application requirements, a miniaturized low pass tunable filter with wide stopband characteristics is designed by using similar methods. In the design of tunable filters with constant absolute bandwidth, we first analyze and summarize the typical design methods of tunable filters with constant absolute bandwidth, and analyze the resonance characteristics of E type multi-mode tunable resonators by using the method of odd-even mode analysis. A miniaturized tunable filter with constant absolute bandwidth is designed by using the E type multimode tunable resonator. Secondly, in order to solve some shortcomings of this filter, the tunable filter with better performance is realized. Based on the structure of the filter, an improvement is made to realize another type of tunable filter with constant absolute bandwidth. The filter is processed and tested to verify the effectiveness of the design method.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN713
【参考文献】
相关博士学位论文 前1条
1 王建朋;无线通信系统中的高性能小型化无源元件研究[D];电子科技大学;2008年
，本文编号：2410772
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