多路耦合器的設(shè)計與調(diào)試
發(fā)布時間：2019-07-04 20:39
【摘要】：隨著微波、毫米波技術(shù)的蓬勃發(fā)展,移動通信技術(shù)突飛猛進(jìn),頻帶資源也變得日益擁擠,人們總是希望在盡可能小的頻帶內(nèi)傳輸盡可能多的信息。多路耦合器是有效利用頻譜資源的手段之一,其廣泛應(yīng)用于調(diào)頻電臺、天線合路技術(shù)及軍事抗干擾等領(lǐng)域,其采用多個信道工作于不同頻段,保證相互之間的隔離,并能夠同時共用一部天線。本文的工作體現(xiàn)在以下幾個方面:1.從了解多路耦合器的研究背景和需求出發(fā),調(diào)研了國內(nèi)外多路耦合器的研究現(xiàn)狀,繼而對多工器進(jìn)行了全面的分析和研究,并介紹了多工器的一般設(shè)計方法。2.基于多工器設(shè)計的理論分析以及設(shè)計時要考慮到的問題,分析了多工器設(shè)計時要考慮到的通道之間的相互影響,即殘存電納的消除;此時可選擇具有帶內(nèi)負(fù)斜率電抗特性的低通原型為出發(fā)點(diǎn)開始設(shè)計。3.基于螺旋腔體濾波器的寬帶等效電路,采用全波-電路混合模型準(zhǔn)確又快速地設(shè)計了UHF頻段通帶相接的24工器,介紹了電路級24工器的設(shè)計,采用分布優(yōu)化方法在AWR軟件中將電路優(yōu)化后獲得最終的結(jié)構(gòu)。在整個電路結(jié)構(gòu)中,耦合網(wǎng)絡(luò)采用的是多頭線型的耦合結(jié)構(gòu),每個通道濾波器之間都是通過一個T型接頭連接到一起的。最終電路結(jié)構(gòu)仿真優(yōu)化后,實(shí)現(xiàn)了輸入端口的反射損耗均低于-20dB,每個濾波器的傳輸特性曲線交疊在-3d B的位置。并用群時延方法對加工出的單個濾波器做了調(diào)試,調(diào)試結(jié)果跟理論仿真基本吻合,驗(yàn)證了全波-電路混合模型的正確性。4.基于對多工器的指標(biāo)要求越來越高,總是希望各通道濾波器的相鄰?fù)ǖ栏蓴_更小、結(jié)構(gòu)更緊湊;本文運(yùn)用了前人提出的仿生學(xué)的概念,根據(jù)哺乳動物耳蝸的結(jié)構(gòu)原理來設(shè)計多工器,從耳蝸的生理結(jié)構(gòu)出發(fā),一步一步推導(dǎo)出耳蝸結(jié)構(gòu)的等效電路模型,之后具體闡明其電路參數(shù)的提取方法后,最后通過使用分布優(yōu)化方法,設(shè)計了一個UHF頻段的傳輸性能很好的二十四通道的耳蝸式多工器。
[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.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN622
本文編號：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.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN622
【參考文獻(xiàn)】
相關(guān)碩士學(xué)位論文 前2條
1 陳建忠;微波多工濾波器的研究與設(shè)計[D];西安電子科技大學(xué);2010年
2 張婷;寬帶微波多工濾波器網(wǎng)絡(luò)的研究與設(shè)計[D];西安電子科技大學(xué);2006年
，本文編號：2510216
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