本文選題：波導(dǎo) + 圓極化器��； 參考：《南京郵電大學(xué)》2017年碩士論文

【摘要】：波導(dǎo)圓極化器是天線饋源系統(tǒng)中的重要組成部分,在反射面天線饋源系統(tǒng)中應(yīng)用最為廣泛。它的功能是實現(xiàn)線極化信號和圓極化信號之間的相互轉(zhuǎn)換,其性能的好壞直接決定著整個饋源系統(tǒng)的優(yōu)劣。本文的主要研究內(nèi)容是隔板型圓極化器,它是一種可以實現(xiàn)左旋和右旋圓極化同時工作的微波器件。主要研究工作如下:1.波導(dǎo)圓極化器的分析和總結(jié)。通過深入學(xué)習(xí)有關(guān)波導(dǎo)圓極化器的文獻,對其進行了歸納和總結(jié),分析了各種類型的圓極化器的優(yōu)勢和缺點,重點分析了隔板型圓極化器。2.傳統(tǒng)隔板型圓極化器的改進設(shè)計。傳統(tǒng)的隔板型圓極化器具有結(jié)構(gòu)緊促、易于加工等特點,但其相對工作帶寬一般只能做到25%左右。本文對傳統(tǒng)的隔板型圓極化器進行深入的研究和分析后,重新優(yōu)化設(shè)計了階梯隔板,最后設(shè)計了一款寬頻帶的改進型隔板圓極化器,其相對工作帶寬達到了37%。3.新型波導(dǎo)圓極化器的研究和設(shè)計。通過深入學(xué)習(xí)和分析波導(dǎo)圓極化器,并結(jié)合正交模耦合器OMT(Ortho-Mode Transducer)方面的一些知識,提出了一種與傳統(tǒng)隔板型圓極化器工作原理不同的新型波導(dǎo)圓極化器。同時,設(shè)計了一款工作在X波導(dǎo)的新型波導(dǎo)圓極化器,并設(shè)計了易于加工測試的實物加工結(jié)構(gòu)。最后,通過對仿真結(jié)果和實物測試結(jié)果進行對比,驗證了該新型波導(dǎo)圓極化器的正確性。雖然本文給出的新型波導(dǎo)圓極化器的相對工作帶寬只有10%,但是相對于傳統(tǒng)的隔板型圓極化器,它的結(jié)構(gòu)設(shè)計及工作原理不同,因此有許多可以被研究和改進的地方。
[Abstract]:The waveguide circular polarizer is an important part of the antenna feed system. It is used most widely in the reflector antenna feed system. Its function is to realize the mutual conversion between the linear polarization signal and the circular polarization signal. The performance of the waveguide circular polarizer directly determines the quality and inferior of the whole feed system. The main research content of this paper is the baffle type round pole. The main research work is as follows: the analysis and summary of the 1. waveguide circular polarizers. Through the in-depth study of the literature about the waveguide circular polarizer, it has been summarized and summarized, the advantages and disadvantages of various types of circular polarizers are analyzed, and the emphasis is given to the analysis of the advantages and disadvantages of the circular polarizers. The improvement design of the traditional partition circular polarizer of the partition circular polarizer.2. is designed. The traditional partition circular polarizer has the characteristics of tight structure and easy processing, but the relative working bandwidth can only be about 25%. After deep research and analysis of the traditional baffle circular polarizer, this paper re optimizes the design of the staircase partition board. Finally, a wide-band improved diaphragm circular polarizer is designed. Its relative working bandwidth reaches the research and design of a new type of 37%.3. waveguide circular polarizer. By studying and analyzing the waveguide circular polarizer and combining some knowledge of the orthogonal mode coupler OMT (Ortho-Mode Transducer), a kind of circular plate circle is proposed. A new waveguide circular polarizer with different polarizers working principle is designed. A new waveguide circular polarizer working in the X waveguide is designed and the machining structure is designed to be easily machined. Finally, the correctness of the new waveguide circular polarizer is verified by comparing the simulation results with the physical test results. The relative working bandwidth of the new waveguide circular polarizer is only 10%, but relative to the traditional diaphragm type circular polarizer, its structure design and working principle are different, so there are many places that can be studied and improved.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN820

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本文編號：2019444