本文選題：同步開關(guān)噪聲 + 電源分配網(wǎng)絡(luò)��； 參考：《西安電子科技大學(xué)》2014年碩士論文

【摘要】：隨著現(xiàn)代電子產(chǎn)品功能不斷強大、復(fù)雜度不斷提升、功耗不斷減小,電子產(chǎn)品工作時鐘頻率將變得更快,供電電壓將變得更小,相應(yīng)的電路設(shè)計所允許的噪聲容限、時序容限也將變得更低。大規(guī)模集成電路內(nèi)部晶體管同時開啟將產(chǎn)生陡變的瞬態(tài)電流,由陡變瞬態(tài)電流引起的同步開關(guān)噪聲將嚴(yán)重影響電源分配網(wǎng)絡(luò)。電源分配網(wǎng)絡(luò)是高速電路設(shè)計的核心,電路中所有器件都將連接到電源分配網(wǎng)絡(luò)。電源分配網(wǎng)絡(luò)設(shè)計的科學(xué)與否,決定整個產(chǎn)品設(shè)計的成敗。同步開關(guān)噪聲抑制作為電源分配網(wǎng)絡(luò)設(shè)計的重要一環(huán),使得在高速電路中抑制同步開關(guān)噪聲變得尤為重要。過去,同步開關(guān)噪聲得到了足夠的重視,研究者提出了多種能抑制同步開關(guān)噪聲傳播的方法,其中大多數(shù)方法在有限的頻帶內(nèi)是有效的。本文的工作致力于研究在電源分配網(wǎng)絡(luò)中如何有效消除同步開關(guān)噪聲的影響。文章在信號完整性理論基礎(chǔ)上,分析電源分配網(wǎng)絡(luò)的噪聲來源,闡述同步開關(guān)噪聲形成機理,并根據(jù)其形成機理提出幾類抑制同步開關(guān)噪聲的傳統(tǒng)電源分配網(wǎng)絡(luò)設(shè)計,例如增加分立去耦電容、采用差分線傳輸信號、分割電源平面等,并分析這些方法的優(yōu)缺點。近年來,出現(xiàn)了一種電磁帶隙結(jié)構(gòu)用于抑制同步開關(guān)噪聲,這種方法相比傳統(tǒng)電源分配網(wǎng)絡(luò)設(shè)計有很大改進。本文重點介紹電磁帶隙結(jié)構(gòu)抑制同步開關(guān)噪聲,從蘑菇型電磁帶隙結(jié)構(gòu)和共面型電磁帶隙結(jié)構(gòu)入手,通過理論推導(dǎo)和軟件仿真闡述電磁帶隙結(jié)構(gòu)抑制同步開關(guān)噪聲的機理。電磁帶隙結(jié)構(gòu)發(fā)展迅速,國內(nèi)外眾多研究者提出多種電磁帶隙結(jié)構(gòu)用于抑制同步開關(guān)噪聲。針對這些電磁帶隙結(jié)構(gòu),本文剖析其中的優(yōu)點和不足,并總結(jié)前人的經(jīng)驗,創(chuàng)新性地提出了一種平面級聯(lián)型電磁帶隙結(jié)構(gòu)。該結(jié)構(gòu)屬于共面型電磁帶隙結(jié)構(gòu),它由兩種不同周期的共面型結(jié)構(gòu)基本單元按照一定的規(guī)則組合而成。由于其級聯(lián)特征,新型平面級聯(lián)電磁帶隙結(jié)構(gòu)能同時繼承這兩種電磁帶隙結(jié)構(gòu)的優(yōu)點,如果將低下截止頻率和超寬帶抑制能力的兩種電磁帶隙結(jié)構(gòu)級聯(lián),便能得到全頻帶抑制帶寬的電磁帶隙結(jié)構(gòu)。文章詳細(xì)的介紹平面級聯(lián)型電磁帶隙結(jié)構(gòu)的實現(xiàn)過程,通過仿真驗證,在-30d B的抑制深度下,采用該結(jié)構(gòu)將具有19.6GHz的抑制帶寬和500MHz的下截止頻率,相比由單一基本單元組成的電磁帶隙結(jié)構(gòu),其抑制效果要好。另外,本文對該結(jié)構(gòu)進行等效電路建模,從LC并聯(lián)諧振電路角度分析該結(jié)構(gòu)的阻帶特性,并闡述該結(jié)構(gòu)所具有的繼承性。最后,對該結(jié)構(gòu)進行時域眼圖分析,在采用差分信令情況下,信號傳輸質(zhì)量可以得到明顯改善。
[Abstract]:With the powerful functions, increasing complexity and decreasing power consumption of modern electronic products, the clock frequency of electronic products will become faster, the power supply voltage will become smaller, and the noise tolerance of the corresponding circuit design will be allowed. Timing tolerances will also become lower. Switching on the internal transistor of large scale integrated circuits at the same time will result in a sudden change of transient current, and the synchronous switching noise caused by the sudden change of transient current will seriously affect the power distribution network. Power distribution network is the core of high-speed circuit design, all devices in the circuit will be connected to the power distribution network. Whether the power distribution network design is scientific or not determines the success or failure of the whole product design. As an important link in the design of power distribution networks, the suppression of synchronous switching noise in high-speed circuits becomes particularly important. In the past, enough attention has been paid to synchronous switching noise. Researchers have proposed a variety of methods to suppress the propagation of synchronous switching noise, most of which are effective in a limited frequency band. This paper focuses on how to effectively eliminate the influence of synchronous switching noise in power distribution networks. Based on the theory of signal integrity, this paper analyzes the noise source of power supply distribution network, expounds the formation mechanism of synchronous switching noise, and puts forward several kinds of traditional power distribution network design for restraining synchronous switching noise according to its formation mechanism. The advantages and disadvantages of these methods are analyzed, such as increasing the discrete decoupling capacitance, using differential line to transmit the signal, dividing the power plane, and analyzing the advantages and disadvantages of these methods. In recent years, an electromagnetic bandgap structure has been developed to suppress the synchronous switching noise. This method is much better than the traditional power distribution network design. This paper focuses on the suppression of synchronous switching noise by electromagnetic band gap structure. Starting with mushroom electromagnetic band gap structure and coplanar electromagnetic band gap structure, the mechanism of electromagnetic band gap structure restraining synchronous switching noise is explained by theoretical derivation and software simulation. With the rapid development of electromagnetic bandgap structures, many researchers at home and abroad have proposed a variety of electromagnetic band gap structures to suppress synchronous switching noise. In this paper, the advantages and disadvantages of these electromagnetic band gap structures are analyzed, and the previous experiences are summarized. A plane cascade electromagnetic band gap structure is proposed in this paper. The structure belongs to the coplanar electromagnetic band gap structure and is composed of two basic elements of coplanar structure with different periods in accordance with certain rules. Because of its cascade characteristics, the new planar cascade electromagnetic band gap structure can inherit the advantages of these two electromagnetic band gap structures at the same time. If two kinds of electromagnetic band gap structures with low cutoff frequency and ultra-wideband suppression ability are cascaded, An electromagnetic bandgap structure with full bandwidth suppression can be obtained. In this paper, the realization process of planar cascaded electromagnetic bandgap structure is introduced in detail. The simulation results show that the structure will have a bandwidth of 19.6GHz and a lower cut-off frequency of 500MHz at the depth of -30dB. Compared with the electromagnetic band gap structure composed of a single basic unit, the suppression effect of the structure is better. In addition, the equivalent circuit of the structure is modeled, the stopband characteristic of the structure is analyzed from the point of view of LC parallel resonant circuit, and the inheritance of the structure is expounded. Finally, the time domain ophthalmogram analysis of the structure shows that the signal transmission quality can be improved obviously by using differential signaling.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN86

【共引文獻】

相關(guān)期刊論文 前10條

1 李殿來;龔欣;王智君;;預(yù)加重在高速電路板中的應(yīng)用[J];電子科技;2014年08期

2 余青旺;張赤斌;王廣平;;高速PCB同步開關(guān)噪聲仿真抑制分析[J];電子器件;2014年04期

3 李海軍;牟俊杰;周迎;陳育良;;直升機發(fā)射控制電路監(jiān)控方法設(shè)計[J];四川兵工學(xué)報;2015年01期

4 沙卓p，

本文編號：1995330