發(fā)布時(shí)間：2018-02-02 04:25

  本文關(guān)鍵詞： 電源完整性 信號完整性 電源噪聲 電磁帶隙 缺陷地結(jié)構(gòu)　出處：《哈爾濱工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著時(shí)鐘速率的飛速提高,電源完整性、信號完整性以及電磁干擾等問題已經(jīng)成為制約高速電路系統(tǒng)進(jìn)一步發(fā)展的關(guān)鍵因素,其中電源完整性是所有高速電路不可忽視的問題。傳統(tǒng)的電源噪聲抑制技術(shù)主要采用不同種類的去耦電容,但這些電容已經(jīng)無法抑制頻率越來越高的電源噪聲。電磁帶隙結(jié)構(gòu)(EBG)和缺陷地結(jié)構(gòu)(DGS)等人工電磁材料可以很容易的工作在微波頻段,因而正成為潛在的電源噪聲抑制技術(shù)得到重視和研究。但是EBG和DGS等技術(shù)也存在一些問題,包括結(jié)構(gòu)尺寸較大,容易引起信號完整性問題等。本文對共面型EBG和DGS在電源噪聲抑制技術(shù)中的應(yīng)用進(jìn)行了研究,主要探究了降低EBG下限截止頻率的設(shè)計(jì)方法和改善信號完整性的解決方案。首先,本文從典型EBG和DGS的基本構(gòu)造出發(fā),利用等效電路模型和傳輸線理論分析了他們的傳輸特性。針對EBG,利用等效電路模型和S參數(shù)直接提取得到了其帶隙特性并討論了EBG的結(jié)構(gòu)參數(shù)對帶隙的影響;對于DGS,借助S參數(shù)提取得到了其等效電路模型相關(guān)參數(shù)。等效電路模型的分析,為EBG和DGS的設(shè)計(jì)和改進(jìn)提供了理論依據(jù)和指導(dǎo)。其次,本文從降低下限截止頻率的角度提出了兩種改進(jìn)型的共面型EBG。兩種改進(jìn)型的EBG分別基于傳統(tǒng)的UC-EBG和L-EBG單元,通過加載螺旋線連接橋和延長連接橋路徑實(shí)現(xiàn)小型化。仿真結(jié)果表明兩款EBG的下限截止頻率分別下降了31.3%和46.3%。另外,針對平面型EBG容易引起信號完整性問題的缺點(diǎn),提出了補(bǔ)充局部地軌和互補(bǔ)EBG兩種改善信號傳輸質(zhì)量的解決方案。最后,本文提出并探究了一種應(yīng)用于電源噪聲抑制的矩形螺旋線DGS,仿真和實(shí)驗(yàn)結(jié)果表明,該DGS具有下限截止頻率低、帶寬大且結(jié)構(gòu)簡單等諸多優(yōu)點(diǎn)。同時(shí),該DGS還最大程度地保留了參考平面的完整性,為良好的信號完整性提供保障;文章末尾通過對不同路徑信號線的傳輸特性的討論,給出了一些在加載DGS環(huán)境下的布線建議。
[Abstract]:With the rapid improvement of clock rate, power integrity, signal integrity and electromagnetic interference have become the key factors restricting the further development of high-speed circuit systems. The integrity of power supply is a problem that can not be ignored in all high speed circuits. The traditional power supply noise suppression technology mainly uses different kinds of decoupling capacitors. However, these capacitors can not restrain the increasingly high frequency of power noise. The electromagnetic band gap structure (EBG) and the defective ground structure (DGS) artificial electromagnetic materials can easily work in the microwave frequency. Therefore, it is becoming a potential power source noise suppression technology has been paid attention to and studied. However, there are some problems in EBG and DGS technology, including the larger structure size. This paper studies the application of coplanar EBG and DGS in power noise suppression technology. This paper mainly discusses the design method of reducing the lower limit cutoff frequency of EBG and the solution to improve the signal integrity. Firstly, this paper starts from the basic structure of typical EBG and DGS. Their transmission characteristics are analyzed by using equivalent circuit model and transmission line theory. The band gap characteristics are obtained by using the equivalent circuit model and S parameters, and the influence of the structure parameters of EBG on the band gap is discussed. For DGSs, the relevant parameters of equivalent circuit model are obtained with the help of S parameter extraction. The analysis of equivalent circuit model provides theoretical basis and guidance for the design and improvement of EBG and DGS. Secondly. In this paper, two kinds of improved coplanar EBGs are proposed to reduce the lower cutoff frequency. Two kinds of improved EBG are based on traditional UC-EBG and L-EBG units, respectively. Miniaturization is realized by loading helical connection bridge and extending connection bridge path. The simulation results show that the lower limit cutoff frequency of the two EBG is reduced by 31.3% and 46.3 respectively. In addition. Aiming at the shortcoming that plane EBG is easy to cause signal integrity problem, two solutions to improve the signal transmission quality are proposed, which are complementary local ground orbit and complementary EBG. In this paper, a rectangular spiral DGSs applied to power noise suppression is proposed and explored. The simulation and experimental results show that the DGS has many advantages, such as low cutoff frequency, large bandwidth and simple structure. The DGS also preserves the integrity of the reference plane to the greatest extent and provides a guarantee for the good signal integrity. At the end of the paper, through the discussion of the transmission characteristics of different path signal lines, some routing suggestions under loading DGS environment are given.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN86

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本文編號：1483622