發(fā)布時間：2019-06-14 00:39

【摘要】：微波濾波器是現(xiàn)代通信系統(tǒng)中的重要組件,隨著信息社會的快速發(fā)展,電子產(chǎn)品集成度越來越高,濾波器的平面化和小型化受到越來越多的關(guān)注,同時,頻譜資源日趨緊張和匱乏的現(xiàn)狀對濾波器的頻率選擇性提出了更高的要求。因此,研究具有高選擇性的小型化平面結(jié)構(gòu)濾波器具有較高的意義和價值。本論文以實現(xiàn)微波濾波器的小型化和高選擇性為目標(biāo),主要開展了以下的研究工作：1.提出了LTCC平面化螺旋形結(jié)構(gòu)諧振器,通過電磁場圖和等效電路模型分析了諧振器的工作原理�；谠撀菪谓Y(jié)構(gòu)諧振器,構(gòu)建了多種混合耦合諧振對,可以用于設(shè)計多種具有不同響應(yīng)特性的二階混合耦合濾波器。2.基于典型的螺旋形結(jié)構(gòu)混合耦合諧振對,提出了三種二階混合耦合濾波器,分別具有雙邊非對稱零點(diǎn)高選擇性帶通響應(yīng)(S1型濾波器)、雙邊對稱零點(diǎn)高選擇性帶通響應(yīng)(S2型濾波器)和單邊雙零點(diǎn)高選擇性帶通響應(yīng)(S3型濾波器)。對混合耦合產(chǎn)生傳輸零點(diǎn)的原理進(jìn)行了分析,給出了集總元件等效電路模型,并采用奇偶模分析法推導(dǎo)出零點(diǎn)頻率的計算公式,可以用于指導(dǎo)電路設(shè)計。三種濾波器均采用LTCC工藝流片,測量結(jié)果和仿真結(jié)果十分吻合,驗證了設(shè)計思路的可行性和準(zhǔn)確性。濾波器的尺寸約為0.05λg×0.03λ,具有明顯的小型化優(yōu)勢。3.基于螺旋形結(jié)構(gòu)混合耦合諧振對的高選擇度特性,提出了高階混合耦合濾波器和混合耦合雙工器的設(shè)計,仿真結(jié)果與預(yù)期相符。本論文提出的LTCC螺旋形結(jié)構(gòu)混合耦合諧振對結(jié)構(gòu)緊湊,易于實現(xiàn)傳輸零點(diǎn)的引入,可以推廣應(yīng)用到更多小型化、高選擇性電路的設(shè)計中。
[Abstract]:Microwave filter is an important component in modern communication system. With the rapid development of information society, the integration of electronic products is getting higher and higher. More and more attention has been paid to the planarization and miniaturization of filter. At the same time, the increasing shortage and scarcity of spectrum resources put forward higher requirements for frequency selectivity of filter. Therefore, it is of great significance and value to study miniaturized planar structure filters with high selectivity. In order to realize the miniaturization and high selectivity of microwave filter, the main research work of this paper is as follows: 1. The LTCC planar spiral structure resonator is proposed. The working principle of the resonator is analyzed by electromagnetic field diagram and equivalent circuit model. Based on the spiral structure resonator, a variety of hybrid coupling resonance pairs are constructed, which can be used to design a variety of second-order hybrid coupling filters with different response characteristics. Based on the typical spiral hybrid coupling resonance pair, three second-order hybrid coupling filters are proposed, which have bilateral asymmetric zero high selective band pass response (S1 filter), bilateral symmetric zero high selective band pass response (S2 filter) and unilateral double zero high selective band pass response (M3 filter). In this paper, the principle of generating transmission zero by hybrid coupling is analyzed, the equivalent circuit model of lumped element is given, and the calculation formula of zero frequency is derived by using odd and even mode analysis, which can be used to guide the circuit design. The three filters all use LTCC process flow sheet, and the measurement results are in good agreement with the simulation results, which verifies the feasibility and accuracy of the design idea. The size of the filter is about 0.05 位 g 脳 0.03 位, which has obvious advantages of miniaturization. Based on the high selectivity of hybrid coupling resonance pair with spiral structure, the design of high order hybrid coupling filter and hybrid coupling duplex is proposed, and the simulation results are in good agreement with the expected results. The hybrid coupling resonance of LTCC spiral structure proposed in this paper is compact in structure and easy to realize the introduction of transmission zeros, which can be extended to the design of more miniaturized and highly selective circuits.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN713

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 歐陽霄;混合電磁耦合濾波器研究[D];華南理工大學(xué);2012年

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本文編號：2498956