本文選題：模式變換 + 校準(zhǔn)系統(tǒng)��； 參考：《電子科技大學(xué)》2015年碩士論文

【摘要】：隨著現(xiàn)代軍事與科學(xué)研究的發(fā)展,對(duì)更高功率、更高頻率以及更高能量的微波源的需求變的日益迫切。回旋行波管作為一種新型高功率微波器件,填補(bǔ)了毫米波及亞毫米波段大功率器件的空白,且由于其高峰值功率、高平均功率、高增益和高效率的特點(diǎn),作為微波通信及電子對(duì)抗、毫米波雷達(dá)等系統(tǒng)的功率源,是其他器件所無法比擬的,因而受到了廣泛的重視。在微波測(cè)量的過程中,模式變換能使微波源的能量進(jìn)行有效地傳輸與變換,具有非常重要的研究價(jià)值和應(yīng)用價(jià)值�；谀Ｊ阶儞Q的重要性,本文對(duì)用于冷測(cè)的Q波段矩形波導(dǎo)TE10-圓波導(dǎo)TE01模式變換器進(jìn)行了深入的理論研究和仿真模擬,總結(jié)了該類模式變換器的設(shè)計(jì)方法,并應(yīng)用于教研室的科研領(lǐng)域中。此外,本文開展了大量的實(shí)驗(yàn)性的工作,以回旋器件中的輸出窗與輸入耦合器為例,對(duì)微波測(cè)量去嵌入技術(shù)進(jìn)行了分類與總結(jié)。本論文的主要工作如下:1.對(duì)高功率微波技術(shù)的發(fā)展與應(yīng)用及回旋管的提出與分類進(jìn)行了系統(tǒng)的概述。對(duì)回旋管器件(輸出窗和輸入耦合器)的重要作用進(jìn)行了簡要闡述。對(duì)低功率冷測(cè)用模式變換器和去嵌入技術(shù)的研究現(xiàn)狀和研究方法進(jìn)行了系統(tǒng)的論述。2.系統(tǒng)的研究了十字交叉型模式變換器的設(shè)計(jì)原則與設(shè)計(jì)規(guī)律。3.從微波測(cè)量理論中的校準(zhǔn)理論入手,引出了微波器件的去嵌入技術(shù)。詳細(xì)說明了矢量網(wǎng)絡(luò)分析儀誤差產(chǎn)生的來源及其校準(zhǔn)步驟,比較分析了不同的去嵌入技術(shù)。對(duì)微波器件的去嵌入技術(shù)進(jìn)行了系統(tǒng)的概述,闡述了對(duì)模式變換器這類波導(dǎo)夾具實(shí)施去嵌入的必要性與重要性。4.對(duì)Q波段矩形波導(dǎo)TE10-圓波導(dǎo)TE01模式變換器進(jìn)行了分段仿真優(yōu)化,并對(duì)其關(guān)鍵幾何尺寸的微小變化對(duì)轉(zhuǎn)換效率的影響進(jìn)行了分析。從等效電路的角度分析了諧振問題,優(yōu)化改進(jìn)了模式變換器的結(jié)構(gòu)。通過不同軟件的仿真驗(yàn)證,得到了一支超寬帶、高轉(zhuǎn)換效率的Q波段十字交叉型模式變換器。5.簡要論述了使用網(wǎng)絡(luò)分析儀的注意事項(xiàng),重點(diǎn)給出了回旋器件冷測(cè)去嵌入實(shí)驗(yàn)相應(yīng)的測(cè)試原理、測(cè)試步驟和測(cè)試結(jié)果,并以輸入耦合器和輸出窗為例進(jìn)行了驗(yàn)證。分別運(yùn)用端口延伸、時(shí)域功能等方式實(shí)施去嵌入,比較去嵌入前后的結(jié)果,并與相應(yīng)的仿真結(jié)果比較,以此驗(yàn)證去嵌入方法的準(zhǔn)確性。
[Abstract]:With the development of modern military and scientific research, the demand for microwave sources with higher power, higher frequency and higher energy becomes more and more urgent.As a new type of high power microwave device, cyclotron fills up the gap of millimeter wave and submillimeter band high power devices, and because of its high peak power, high average power, high gain and high efficiency.As the power source of microwave communication and electronic countermeasure, millimeter wave radar and other systems can not be compared with other devices, so it has received extensive attention.In the process of microwave measurement, mode transformation can make the energy of microwave source transmit and transform effectively, which has very important research value and application value.Based on the importance of mode transformation, a Q-band rectangular waveguide TE10- circular waveguide TE01 mode converter for cold measurement is studied and simulated, and the design method of this kind of converter is summarized.And applied in the research field of the teaching and research department.In addition, a lot of experimental work has been carried out in this paper. Taking the output window and input coupler in gyrotron as examples, the technique of microwave measurement de-embedding is classified and summarized.The main work of this thesis is as follows: 1.The development and application of high power microwave technology and the proposal and classification of gyrotron are summarized systematically.The important role of gyrotron devices (output window and input coupler) is briefly described.The research status and research methods of low power cold test mode converter and de-embedding technology are systematically discussed in this paper.The design principle and design rule of cross mode converter are studied systematically.Based on the calibration theory of microwave measurement theory, the de-embedding technology of microwave device is introduced.The error source and calibration steps of vector network analyzer are explained in detail, and different de-embedding techniques are compared and analyzed.This paper gives a systematic overview of the de-embedding technology of microwave devices, and expounds the necessity and importance of deembedding the waveguide clamps such as mode converters.The Q-band rectangular waveguide TE10- circular waveguide TE01 mode converter is optimized by segmental simulation, and the influence of the small change of its key geometry on the conversion efficiency is analyzed.The resonance problem is analyzed from the point of view of equivalent circuit, and the structure of mode converter is optimized.A Q-band cross mode converter with high conversion efficiency and ultra-wideband (UWB) has been obtained by simulation with different software.This paper briefly discusses the matters needing attention in the use of network analyzer, and puts emphasis on the corresponding test principle, test steps and test results of the cold test de-embedding experiment of the gyroscope. The examples of the input coupler and output window are given for verification.The port extension and time domain function are used to implement de-embedding respectively. The results before and after de-embedding are compared and compared with the corresponding simulation results to verify the accuracy of the de-embedding method.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN124;TN624

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1 牛新建;高功率微波傳輸線及模式變換研究[D];電子科技大學(xué);2003年

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本文編號(hào)：1756437