38GHz毫米波波导双工器的设计与仿真
发布时间：2019-02-16 02:22
【摘要】：科技在不断进步,通信行业在不断发展,在无线通信频谱资源日趋紧张的今天,微波滤波器因为其具有分离有用和无用信号的作用而成为无线通信中的重要系统组成部件,微波滤波器的性能好与坏会直接对通信系统的产生影响。微波滤波器在很多通信相关领域有着广泛的应用,如广播电视信号收发系统、卫星通讯收发系统、手机基站信号收发系统,点对点微波数据传输系统、军事通讯雷达系统等领域,微波滤波器在这些系统应用领域的需求也越来越高越来越严。随着通讯领域飞速发展,微波滤波器正向着更高的频率,更小的体积,更高的性能,更低的成本(尤其民用通讯领域)方向发展。微波滤波器体积的小型化,质量的高性能,制造的低成本已成为各国目前的研究热点。本文毫米波双工器设计目标是在38GHz频段附近通带500M左右带宽的情况下,在间隔500MHz左右的频谱上实现双工通带小于1.5dB的通带插入损耗,大于65dB的通带互相抑制,以及大于30dB的远端抑制,在此基础上,考虑到收发两个不同频段共用一个腔体公共端从而实现双工的功能,为了实现高性能的收发之间的带外抑制,加入了TE102次模式实现交叉耦合,为了实现远端的带外抑制功能,滤波器输入口级联了脊波导低通的滤波器,经过大量的软件优化和仿真从而得到高性能38g毫米波波导双工器。设计制作的样品测试表明,本文的设计与仿真与调试后的测试结果很接近,高性能低成本紧凑体积的设计,使得该类似设计产品在毫米波射频工程领域具有更高的竞争力。全文共可分为八章,第一章主要介绍课题背景意义与现状,介绍了常规滤波器的种类及其应用,提出了通讯行业频段往毫米波发展的趋势,为后续毫米波滤波器设计作铺垫。第二章介绍微波滤波器的不同频率段分类理与工程上的应用,介绍微波腔体滤波器的应用实现形式。第三,四章重点介绍了腔体滤波器以及波导腔体滤波器指标实现分析和腔体滤波器机械实现形式,第五章重点讲述了38GHz毫米波波导双工器设计和软件仿真以及配件的设计,其中主要应用德国MICIAN公司的Uwave软件进行毫米波腔体建模和射频参数仿真,得到比较理想的仿真曲线和射频参数指标。第六章介绍38GHz毫米波双工器的机械加工具体实现,最后两章在前面设计仿真思路的基础上,对机械加工制备的样品进行调试和测试,结果表明测试射频参数曲线接近仿真与设计现实指标并总结对未来的展望与推广。总之,本文重点研究了毫米波腔体滤波器及双工器的实现与设计,实现了矩形波导高次模在滤波器腔体交叉耦合中的应用,实现了毫米波滤波器高性能小体积的优势。本文的工作对类似的毫米波滤波器研制已及产品提高市场竞争力具有十分重要的现实意义。
[Abstract]:With the development of science and technology and the development of communication industry, microwave filter has become an important component of wireless communication system because of its function of separating useful and useless signals. The good or bad performance of microwave filter will directly affect the communication system. Microwave filter has been widely used in many communication related fields, such as radio and television signal transceiver system, satellite communication transceiver system, mobile phone base station signal transceiver system, point-to-point microwave data transmission system. In the field of military communication radar systems, microwave filters are becoming more and more demanding in the application fields of these systems. With the rapid development of communication field, microwave filters are developing towards higher frequency, smaller volume, higher performance and lower cost (especially in the field of civil communication). The miniaturization of microwave filter, high quality and low cost have become the focus of research all over the world. In this paper, the design goal of millimeter-wave duplexer is to realize the passband insertion loss of duplex band less than that of 1.5dB in the frequency spectrum of interval 500MHz, which is larger than that of 65dB, and suppress each other in the case of 500m bandpass near the 38GHz band. On the basis of this, considering that two different frequency bands share the common end of the cavity to realize duplex function, in order to realize the out-of-band suppression between the high performance transceivers, TE102 submode is added to realize cross coupling. In order to realize the outband suppression function of the far end, the filter input port cascades the low pass filter of the ridge waveguide. After a lot of software optimization and simulation, the high performance 38g millimeter wave waveguide Duplexer is obtained. The sample test results show that the design is very close to the test results after simulation and debugging. The high performance, low cost and compact volume design makes the similar design product more competitive in millimeter wave RF engineering field. This paper can be divided into eight chapters. The first chapter mainly introduces the background significance and present situation of the subject, introduces the types and applications of conventional filters, and puts forward the development trend of the frequency band to millimeter wave in the communication industry, which will pave the way for the subsequent design of millimeter wave filters. In the second chapter, the classification principle and engineering application of microwave filter in different frequency bands are introduced, and the realization of microwave cavity filter is introduced. The third and fourth chapters focus on the analysis of cavity filter and waveguide cavity filter and the mechanical realization of cavity filter. The fifth chapter focuses on the design and software simulation of 38GHz millimeter wave waveguide Duplexer and the design of accessories. The modeling of millimeter wave cavity and the simulation of RF parameters are mainly carried out by the Uwave software of MICIAN Company of Germany. The ideal simulation curve and the index of RF parameters are obtained. The sixth chapter introduces the realization of 38GHz millimeter wave duplex machining. The last two chapters debug and test the samples prepared by machining on the basis of the previous design and simulation ideas. The results show that the curve of RF parameters is close to the realistic index of simulation and design, and the prospect and generalization of the future are summarized. In conclusion, the realization and design of millimeter wave cavity filter and Duplexer are studied in this paper. The application of rectangular waveguide high order mode in cross coupling of filter cavity is realized, and the advantage of high performance and small volume of millimeter wave filter is realized. The work of this paper is of great practical significance to the development of similar millimeter wave filters and the improvement of market competitiveness of products.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN631.2
本文编号：2423948
[Abstract]:With the development of science and technology and the development of communication industry, microwave filter has become an important component of wireless communication system because of its function of separating useful and useless signals. The good or bad performance of microwave filter will directly affect the communication system. Microwave filter has been widely used in many communication related fields, such as radio and television signal transceiver system, satellite communication transceiver system, mobile phone base station signal transceiver system, point-to-point microwave data transmission system. In the field of military communication radar systems, microwave filters are becoming more and more demanding in the application fields of these systems. With the rapid development of communication field, microwave filters are developing towards higher frequency, smaller volume, higher performance and lower cost (especially in the field of civil communication). The miniaturization of microwave filter, high quality and low cost have become the focus of research all over the world. In this paper, the design goal of millimeter-wave duplexer is to realize the passband insertion loss of duplex band less than that of 1.5dB in the frequency spectrum of interval 500MHz, which is larger than that of 65dB, and suppress each other in the case of 500m bandpass near the 38GHz band. On the basis of this, considering that two different frequency bands share the common end of the cavity to realize duplex function, in order to realize the out-of-band suppression between the high performance transceivers, TE102 submode is added to realize cross coupling. In order to realize the outband suppression function of the far end, the filter input port cascades the low pass filter of the ridge waveguide. After a lot of software optimization and simulation, the high performance 38g millimeter wave waveguide Duplexer is obtained. The sample test results show that the design is very close to the test results after simulation and debugging. The high performance, low cost and compact volume design makes the similar design product more competitive in millimeter wave RF engineering field. This paper can be divided into eight chapters. The first chapter mainly introduces the background significance and present situation of the subject, introduces the types and applications of conventional filters, and puts forward the development trend of the frequency band to millimeter wave in the communication industry, which will pave the way for the subsequent design of millimeter wave filters. In the second chapter, the classification principle and engineering application of microwave filter in different frequency bands are introduced, and the realization of microwave cavity filter is introduced. The third and fourth chapters focus on the analysis of cavity filter and waveguide cavity filter and the mechanical realization of cavity filter. The fifth chapter focuses on the design and software simulation of 38GHz millimeter wave waveguide Duplexer and the design of accessories. The modeling of millimeter wave cavity and the simulation of RF parameters are mainly carried out by the Uwave software of MICIAN Company of Germany. The ideal simulation curve and the index of RF parameters are obtained. The sixth chapter introduces the realization of 38GHz millimeter wave duplex machining. The last two chapters debug and test the samples prepared by machining on the basis of the previous design and simulation ideas. The results show that the curve of RF parameters is close to the realistic index of simulation and design, and the prospect and generalization of the future are summarized. In conclusion, the realization and design of millimeter wave cavity filter and Duplexer are studied in this paper. The application of rectangular waveguide high order mode in cross coupling of filter cavity is realized, and the advantage of high performance and small volume of millimeter wave filter is realized. The work of this paper is of great practical significance to the development of similar millimeter wave filters and the improvement of market competitiveness of products.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN631.2
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