多路耦合器的设计与调试
发布时间：2019-07-04 20:39
【摘要】：随着微波、毫米波技术的蓬勃发展,移动通信技术突飞猛进,频带资源也变得日益拥挤,人们总是希望在尽可能小的频带内传输尽可能多的信息。多路耦合器是有效利用频谱资源的手段之一,其广泛应用于调频电台、天线合路技术及军事抗干扰等领域,其采用多个信道工作于不同频段,保证相互之间的隔离,并能够同时共用一部天线。本文的工作体现在以下几个方面:1.从了解多路耦合器的研究背景和需求出发,调研了国内外多路耦合器的研究现状,继而对多工器进行了全面的分析和研究,并介绍了多工器的一般设计方法。2.基于多工器设计的理论分析以及设计时要考虑到的问题,分析了多工器设计时要考虑到的通道之间的相互影响,即残存电纳的消除;此时可选择具有带内负斜率电抗特性的低通原型为出发点开始设计。3.基于螺旋腔体滤波器的宽带等效电路,采用全波-电路混合模型准确又快速地设计了UHF频段通带相接的24工器,介绍了电路级24工器的设计,采用分布优化方法在AWR软件中将电路优化后获得最终的结构。在整个电路结构中,耦合网络采用的是多头线型的耦合结构,每个通道滤波器之间都是通过一个T型接头连接到一起的。最终电路结构仿真优化后,实现了输入端口的反射损耗均低于-20dB,每个滤波器的传输特性曲线交叠在-3d B的位置。并用群时延方法对加工出的单个滤波器做了调试,调试结果跟理论仿真基本吻合,验证了全波-电路混合模型的正确性。4.基于对多工器的指标要求越来越高,总是希望各通道滤波器的相邻通道干扰更小、结构更紧凑;本文运用了前人提出的仿生学的概念,根据哺乳动物耳蜗的结构原理来设计多工器,从耳蜗的生理结构出发,一步一步推导出耳蜗结构的等效电路模型,之后具体阐明其电路参数的提取方法后,最后通过使用分布优化方法,设计了一个UHF频段的传输性能很好的二十四通道的耳蜗式多工器。
[Abstract]:With the rapid development of microwave and millimeter wave technology, mobile communication technology is advancing by leaps and bounds, and frequency band resources are becoming more and more crowded. People always want to transmit as much information as possible in the smallest frequency band. Multi-channel couplers are one of the means to make effective use of spectrum resources. They are widely used in FM radio, antenna combination technology and military anti-interference. It uses multiple channels to work in different frequency bands to ensure the isolation of each other, and can share one antenna at the same time. The work of this paper is reflected in the following aspects: 1. Based on the understanding of the research background and requirements of multi-channel couplers, this paper investigates the research status of multi-channel couplers at home and abroad, then makes a comprehensive analysis and research on the demultiplexers, and introduces the general design method of the demultiplexers. 2. Based on the theoretical analysis of the demultiplexer design and the problems to be taken into account in the design, the interaction between the channels to be taken into account in the design of the demultiplexer is analyzed, that is, the elimination of the residual capacitance. At this time, the low-pass prototype with the negative slope reactance characteristics can be selected as the starting point for the design. Based on the broadband equivalent circuit of spiral cavity filter, the full wave circuit hybrid model is used to design the 24 unit with passband connection in UHF band accurately and rapidly. the design of circuit level 24 operator is introduced, and the final structure is obtained by using the distributed optimization method to optimize the circuit in AWR software. In the whole circuit structure, the coupling network adopts the coupling structure of multi-head line type, and each channel filter is connected together by a T-shaped joint. After the final circuit structure is simulated and optimized, the reflection loss of the input port is lower than-20dB, and the transmission characteristic curves of each filter overlap in the position of-3D B. The group delay method is used to debug the single filter, and the debugging results are in good agreement with the theoretical simulation, which verifies the correctness of the full-wave-circuit hybrid model. 4. Based on the higher and higher requirements for the demultiplexer, it is always hoped that the adjacent channel interference of each channel filter will be smaller and the structure will be more compact. In this paper, the concept of bionics is used to design the multiplex according to the structural principle of the mammal cochlea. Starting from the physiological structure of the cochlea, the equivalent circuit model of the cochlear structure is deduced step by step. After illustrating the extraction method of the circuit parameters, a 24-channel cochlear multiplex with good transmission performance in the UHF band is designed by using the distributed optimization method.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN622
本文编号：2510216
[Abstract]:With the rapid development of microwave and millimeter wave technology, mobile communication technology is advancing by leaps and bounds, and frequency band resources are becoming more and more crowded. People always want to transmit as much information as possible in the smallest frequency band. Multi-channel couplers are one of the means to make effective use of spectrum resources. They are widely used in FM radio, antenna combination technology and military anti-interference. It uses multiple channels to work in different frequency bands to ensure the isolation of each other, and can share one antenna at the same time. The work of this paper is reflected in the following aspects: 1. Based on the understanding of the research background and requirements of multi-channel couplers, this paper investigates the research status of multi-channel couplers at home and abroad, then makes a comprehensive analysis and research on the demultiplexers, and introduces the general design method of the demultiplexers. 2. Based on the theoretical analysis of the demultiplexer design and the problems to be taken into account in the design, the interaction between the channels to be taken into account in the design of the demultiplexer is analyzed, that is, the elimination of the residual capacitance. At this time, the low-pass prototype with the negative slope reactance characteristics can be selected as the starting point for the design. Based on the broadband equivalent circuit of spiral cavity filter, the full wave circuit hybrid model is used to design the 24 unit with passband connection in UHF band accurately and rapidly. the design of circuit level 24 operator is introduced, and the final structure is obtained by using the distributed optimization method to optimize the circuit in AWR software. In the whole circuit structure, the coupling network adopts the coupling structure of multi-head line type, and each channel filter is connected together by a T-shaped joint. After the final circuit structure is simulated and optimized, the reflection loss of the input port is lower than-20dB, and the transmission characteristic curves of each filter overlap in the position of-3D B. The group delay method is used to debug the single filter, and the debugging results are in good agreement with the theoretical simulation, which verifies the correctness of the full-wave-circuit hybrid model. 4. Based on the higher and higher requirements for the demultiplexer, it is always hoped that the adjacent channel interference of each channel filter will be smaller and the structure will be more compact. In this paper, the concept of bionics is used to design the multiplex according to the structural principle of the mammal cochlea. Starting from the physiological structure of the cochlea, the equivalent circuit model of the cochlear structure is deduced step by step. After illustrating the extraction method of the circuit parameters, a 24-channel cochlear multiplex with good transmission performance in the UHF band is designed by using the distributed optimization method.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN622
【参考文献】
相关硕士学位论文 前2条
1 陈建忠;微波多工滤波器的研究与设计[D];西安电子科技大学;2010年
2 张婷;宽带微波多工滤波器网络的研究与设计[D];西安电子科技大学;2006年
，本文编号：2510216
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