本文選題：POI + 合路器�。� 參考：《電子科技大學(xué)》2017年碩士論文

【摘要】：現(xiàn)如今通信技術(shù)的發(fā)展日新月異,華為公司的Polar Code(極化碼)方案也在2016年11月最終戰(zhàn)勝歐美強(qiáng)國(guó),成為5G控制信道eMBB(增強(qiáng)移動(dòng)寬帶)場(chǎng)景編碼最終方案,而4G通信在城市已經(jīng)全面普及開(kāi)來(lái),通信頻段頻率不斷升高細(xì)分,通信制式也逐漸多種多樣,3G的CDMA和4G的TD-LTE。為了實(shí)現(xiàn)各個(gè)通信頻段信號(hào)的上行下行,室內(nèi)通信分布系統(tǒng)變得越來(lái)越復(fù)雜,而很多時(shí)候各個(gè)運(yùn)營(yíng)商又分別建立自己的覆蓋系統(tǒng)造成的重復(fù)建設(shè)加劇了這一現(xiàn)狀。因此多系統(tǒng)合路平臺(tái)(POI)的設(shè)計(jì)和推廣應(yīng)用顯得尤為必要,而其中關(guān)鍵部分多頻合路器的設(shè)計(jì)具有重要意義。多頻合路器的設(shè)計(jì)從上個(gè)世紀(jì)中后葉開(kāi)始就有很多前人的研究,受限于理論和計(jì)算機(jī)技術(shù)的發(fā)展等相關(guān)因素,到近些年才逐漸趨于成熟,能夠采用多通帶濾波器并聯(lián)方式實(shí)現(xiàn)合路以及靈活選擇結(jié)構(gòu)來(lái)達(dá)到設(shè)計(jì)指標(biāo)。本文的主要工作就是設(shè)計(jì)實(shí)現(xiàn)高隔離、低插損和高帶外抑制等一些性能和結(jié)構(gòu)上要求嚴(yán)苛的五通帶合路器。多頻合路器可以分解為幾個(gè)單通帶濾波器結(jié)構(gòu),所以本文首先對(duì)多頻合路器的基礎(chǔ)部分——濾波器進(jìn)行詳細(xì)理論介紹,著重從廣義切比雪夫型濾波器及交叉耦合矩陣方面分析,為后續(xù)的各路復(fù)雜結(jié)構(gòu)濾波器設(shè)計(jì)提供理論支撐,同時(shí)也結(jié)合仿真軟件HFSS討論耦合系數(shù)的計(jì)算公式。然后開(kāi)始從HFSS單雙腔諧振頻率與耦合系數(shù)的仿真展開(kāi),在實(shí)際設(shè)計(jì)中分析濾波器結(jié)構(gòu)對(duì)性能的影響,特別是應(yīng)用較多的CT和CQ交叉耦合及端口耦合結(jié)構(gòu)等,又從仿真設(shè)計(jì)方法運(yùn)用方面主要對(duì)Y矩陣法進(jìn)行討論,此方法在本文設(shè)計(jì)過(guò)程中廣泛運(yùn)用于調(diào)節(jié)諧振與耦合。接著按照我們的軟件仿真設(shè)計(jì)思路從coupleFila確定拓?fù)浣Y(jié)構(gòu)與提取初始耦合矩陣到二維軟件AWR進(jìn)行電路模型仿真,然后到HFSS中建模設(shè)計(jì)出每個(gè)通帶濾波器,最后合路仿真,中間也重點(diǎn)討論到排腔結(jié)構(gòu)和公共腔的引入以減少合路端抽頭數(shù)量,減小合路器體積,簡(jiǎn)化加工,降低各通帶間相互影響。最后加工測(cè)試得到設(shè)計(jì)出的高性能合路器。
[Abstract]:With the rapid development of communication technology, Huawei's Polar Code (polarization Code) scheme finally defeated the European and American powers in November 2016 and became the final scenario coding scheme of the 5G control channel, eMBB (enhanced Mobile Broadband).4G communication has been widely used in cities, the frequency of communication band is increasing and subdivision, and the communication system is becoming more and more diverse, such as CDMA of 3G and TD-LTE of 4G.In order to realize the uplink and downlink of each communication band, the indoor communication distribution system becomes more and more complex.Therefore, the design and popularization of POI) is particularly necessary, and the design of the key part of the multifrequency combiner is of great significance.Since the beginning of the last century, the design of multi-frequency combiner has been studied by many predecessors. Limited by the development of theory and computer technology and other relevant factors, the design of multi-frequency combiner has gradually matured in recent years.The multiband filter can be used in parallel to realize the combination of circuit and flexibly select the structure to achieve the design target.The main work of this paper is to design and implement a five-way band combiner with strict performance and structure requirements, such as high isolation, low insertion loss and high out-of-band suppression.The multifrequency combiner can be decomposed into several single-pass band filter structures, so the basic part of the multiband combiner is introduced in detail in this paper, especially from the aspects of generalized Chebyshev filter and cross-coupling matrix.It provides theoretical support for the subsequent design of complex structure filters, and also discusses the calculation formula of coupling coefficient in combination with the simulation software HFSS.Then the simulation of HFSS single and double cavity resonant frequency and coupling coefficient is carried out, and the influence of filter structure on the performance is analyzed in the practical design, especially in the application of CT and CQ cross-coupling and port coupling structure, etc.The Y matrix method is discussed from the application of simulation design method, which is widely used in regulating resonance and coupling in the design process of this paper.Then according to our software simulation design idea, from determining topology structure and extracting initial coupling matrix of coupleFila to 2D software AWR, circuit model simulation is carried out, and then every passband filter is modeled and designed in HFSS, and finally, combined circuit simulation is carried out.The introduction of cavity structure and common cavity is also discussed in order to reduce the number of taps, reduce the volume of combiner, simplify the processing, and reduce the interaction between each pass and band.Finally, the high performance combiner is designed by processing test.
【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】：2017
【分類(lèi)號(hào)】：TN929.5

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本文編號(hào)：1734978