【摘要】：科技在不斷進(jìn)步,通信行業(yè)在不斷發(fā)展,在無線通信頻譜資源日趨緊張的今天,微波濾波器因?yàn)槠渚哂蟹蛛x有用和無用信號(hào)的作用而成為無線通信中的重要系統(tǒng)組成部件,微波濾波器的性能好與壞會(huì)直接對(duì)通信系統(tǒng)的產(chǎn)生影響。微波濾波器在很多通信相關(guān)領(lǐng)域有著廣泛的應(yīng)用,如廣播電視信號(hào)收發(fā)系統(tǒng)、衛(wèi)星通訊收發(fā)系統(tǒng)、手機(jī)基站信號(hào)收發(fā)系統(tǒng),點(diǎn)對(duì)點(diǎn)微波數(shù)據(jù)傳輸系統(tǒng)、軍事通訊雷達(dá)系統(tǒng)等領(lǐng)域,微波濾波器在這些系統(tǒng)應(yīng)用領(lǐng)域的需求也越來越高越來越嚴(yán)。隨著通訊領(lǐng)域飛速發(fā)展,微波濾波器正向著更高的頻率,更小的體積,更高的性能,更低的成本(尤其民用通訊領(lǐng)域)方向發(fā)展。微波濾波器體積的小型化,質(zhì)量的高性能,制造的低成本已成為各國目前的研究熱點(diǎn)。本文毫米波雙工器設(shè)計(jì)目標(biāo)是在38GHz頻段附近通帶500M左右?guī)挼那闆r下,在間隔500MHz左右的頻譜上實(shí)現(xiàn)雙工通帶小于1.5dB的通帶插入損耗,大于65dB的通帶互相抑制,以及大于30dB的遠(yuǎn)端抑制,在此基礎(chǔ)上,考慮到收發(fā)兩個(gè)不同頻段共用一個(gè)腔體公共端從而實(shí)現(xiàn)雙工的功能,為了實(shí)現(xiàn)高性能的收發(fā)之間的帶外抑制,加入了TE102次模式實(shí)現(xiàn)交叉耦合,為了實(shí)現(xiàn)遠(yuǎn)端的帶外抑制功能,濾波器輸入口級(jí)聯(lián)了脊波導(dǎo)低通的濾波器,經(jīng)過大量的軟件優(yōu)化和仿真從而得到高性能38g毫米波波導(dǎo)雙工器。設(shè)計(jì)制作的樣品測(cè)試表明,本文的設(shè)計(jì)與仿真與調(diào)試后的測(cè)試結(jié)果很接近,高性能低成本緊湊體積的設(shè)計(jì),使得該類似設(shè)計(jì)產(chǎn)品在毫米波射頻工程領(lǐng)域具有更高的競爭力。全文共可分為八章,第一章主要介紹課題背景意義與現(xiàn)狀,介紹了常規(guī)濾波器的種類及其應(yīng)用,提出了通訊行業(yè)頻段往毫米波發(fā)展的趨勢(shì),為后續(xù)毫米波濾波器設(shè)計(jì)作鋪墊。第二章介紹微波濾波器的不同頻率段分類理與工程上的應(yīng)用,介紹微波腔體濾波器的應(yīng)用實(shí)現(xiàn)形式。第三,四章重點(diǎn)介紹了腔體濾波器以及波導(dǎo)腔體濾波器指標(biāo)實(shí)現(xiàn)分析和腔體濾波器機(jī)械實(shí)現(xiàn)形式,第五章重點(diǎn)講述了38GHz毫米波波導(dǎo)雙工器設(shè)計(jì)和軟件仿真以及配件的設(shè)計(jì),其中主要應(yīng)用德國MICIAN公司的Uwave軟件進(jìn)行毫米波腔體建模和射頻參數(shù)仿真,得到比較理想的仿真曲線和射頻參數(shù)指標(biāo)。第六章介紹38GHz毫米波雙工器的機(jī)械加工具體實(shí)現(xiàn),最后兩章在前面設(shè)計(jì)仿真思路的基礎(chǔ)上,對(duì)機(jī)械加工制備的樣品進(jìn)行調(diào)試和測(cè)試,結(jié)果表明測(cè)試射頻參數(shù)曲線接近仿真與設(shè)計(jì)現(xiàn)實(shí)指標(biāo)并總結(jié)對(duì)未來的展望與推廣�？傊�,本文重點(diǎn)研究了毫米波腔體濾波器及雙工器的實(shí)現(xiàn)與設(shè)計(jì),實(shí)現(xiàn)了矩形波導(dǎo)高次模在濾波器腔體交叉耦合中的應(yīng)用,實(shí)現(xiàn)了毫米波濾波器高性能小體積的優(yōu)勢(shì)。本文的工作對(duì)類似的毫米波濾波器研制已及產(chǎn)品提高市場(chǎng)競爭力具有十分重要的現(xiàn)實(shí)意義。
[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.
【學(xué)位授予單位】：蘇州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TN631.2

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本文編號(hào)：2423948