發(fā)布時(shí)間：2018-05-14 08:13

  本文選題：人工表面等離子體激元 + 微帶線　； 參考：《中國科學(xué)技術(shù)大學(xué)》2016年博士論文

【摘要】：表面等離子體激元(Surface Plasmon Polariton, SPP)是一種沿著導(dǎo)體和介質(zhì)交界面?zhèn)鬏敗⒀亟缑娲怪狈较蛏峡焖偎p的電磁波,它在光學(xué)領(lǐng)域具有廣泛的研究和應(yīng)用。而人工表面等離子體激元(Spoof SPP, SSPP)是一種擁有和SPP類似的色散曲線、在金屬周期表面結(jié)構(gòu)上傳輸?shù)谋砻骐姶挪?近年來已經(jīng)在微波或太赫茲等頻段得到實(shí)驗(yàn)驗(yàn)證。在微波頻段,人工表面等離子體激元結(jié)構(gòu)和傳統(tǒng)微波傳輸線有很大不同,它擁有獨(dú)特的色散曲線特性和場分布特性。SSPP結(jié)構(gòu)主要有兩大類,一類是三維SSPP,這種結(jié)構(gòu)的SSPP加工復(fù)雜而又困難,而且,不宜與二維平面微波電路連接：另一類是二維平面SSPP,但現(xiàn)有的二維平面SSPP是單導(dǎo)體形式的,和常用的雙導(dǎo)體形式的微波傳輸線對(duì)接困難,因此,需要研究雙導(dǎo)體形式的二維平面SSPP,以實(shí)現(xiàn)兩者的無縫對(duì)接,本論文針對(duì)微帶型SSPP的理論和應(yīng)用開展研究,滿足了這方面的研究需要,具有重要的理論意義和應(yīng)用價(jià)值。論文的主要研究工作和創(chuàng)新之處如下：1、在對(duì)人工表面等離子體激元(SSPP)的特性和研究狀況進(jìn)行分析和調(diào)研的基礎(chǔ)上,結(jié)合人工表面等離子體激元和傳統(tǒng)微波傳輸結(jié)構(gòu)的特點(diǎn),提出了一種適用于微波頻段的新型SSPP結(jié)構(gòu),即微帶型人工表面等離子體激元結(jié)構(gòu)。首先,分析了新型結(jié)構(gòu)的色散特性,探索了不同尺寸對(duì)色散曲線的影響：其次,通過網(wǎng)絡(luò)分析,計(jì)算新型結(jié)構(gòu)的損耗特性;然后,基于阻抗匹配即是波矢匹配的原理,提出了實(shí)現(xiàn)微帶型SSPP結(jié)構(gòu)和常用微波傳輸線之間連接的模式轉(zhuǎn)換裝置；最后,制作和測試了新型結(jié)構(gòu),實(shí)驗(yàn)驗(yàn)證了新型結(jié)構(gòu)的有效性,在截止頻率以內(nèi),傳輸損耗低于0.5dB。2、針對(duì)新型結(jié)構(gòu),從“路”的角度出發(fā),建立了微帶型人工表面等離子體激元結(jié)構(gòu)的可縮放等效電路模型,提出了一套對(duì)微帶型SSPP結(jié)構(gòu)進(jìn)行建模和參數(shù)提取的方法,色散曲線吻合度良好。3、根據(jù)微帶型人工表面等離子體激元結(jié)構(gòu)具有將場束縛在金屬表面的特性.重點(diǎn)研究了新型SSPP結(jié)構(gòu)在信號(hào)完整性問題上的應(yīng)用。結(jié)果表明,耦合微帶型SSPP結(jié)構(gòu)和差分耦合微帶型SSPP結(jié)構(gòu)具有顯著降低串?dāng)_的能力,為解決串?dāng)_問題,提供了一種新的途徑。4、根據(jù)新型結(jié)構(gòu)的特點(diǎn),研究了微帶型人工表面等離子體激元結(jié)構(gòu)在微波有源元器件上的應(yīng)用。利用微帶型SSPP結(jié)構(gòu),設(shè)計(jì)和制作了一種新型的開關(guān)鍵控(OOK)調(diào)制器,實(shí)驗(yàn)結(jié)果驗(yàn)證了設(shè)計(jì)的有效性。
[Abstract]:Surface plasmon Plasmon Polariton, SPP) is a kind of electromagnetic wave which propagates along the interface between conductor and medium and attenuates perpendicularly along the interface. It has been widely studied and applied in the field of optics. The artificial surface plasmon excitation (SSPP) is a kind of dispersion curve similar to that of SPP. The surface electromagnetic waves propagating on the metal periodic surface structure have been experimentally verified in recent years in the microwave or terahertz frequency bands. In microwave frequency band, the plasmon structure of artificial surface plasma is very different from that of traditional microwave transmission line, and it has unique dispersion curve characteristic and field distribution characteristic. There are two main types of SPP structure. One is three-dimensional SSPP, which is complicated and difficult to process, and it is not suitable to connect with two-dimensional planar microwave circuit. The other is two-dimensional planar SSPP, but the existing two-dimensional planar SSPP is single-conductor. It is difficult to connect with microwave transmission lines in common double conductor form. Therefore, it is necessary to study two dimensional planar SSPPs with double conductors in order to realize the seamless docking between them. In this paper, the theory and application of microstrip SSPP are studied. It meets the needs of this field of research and has important theoretical significance and application value. The main research work and innovation of this paper are as follows: 1. Based on the analysis and investigation of the characteristics and research status of artificial surface plasmon excitation (SSPP), combining the characteristics of artificial surface plasma excitation and traditional microwave transmission structure, A new type of SSPP structure suitable for microwave frequency is proposed, that is, microstrip artificial surface plasmon structure. Firstly, the dispersion characteristic of the new structure is analyzed, and the influence of different dimensions on the dispersion curve is explored. Secondly, the loss characteristic of the new structure is calculated by network analysis, and then, based on the principle of impedance matching, which is the wave vector matching, A mode conversion device to realize the connection between microstrip SSPP structure and microwave transmission line is proposed. Finally, the new structure is fabricated and tested, and the validity of the new structure is verified by experiments, within the cutoff frequency. The transmission loss is less than 0.5 dB.2.The scalable equivalent circuit model of the microstrip artificial surface plasma exciton structure is established from the view of "path" for the new structure. A method for modeling and parameter extraction of microstrip type SSPP structure is presented. The dispersion curve is in good agreement. The plasmon structure of microstrip type artificial surface plasma has the characteristic of binding the field to the metal surface. The application of a new SSPP structure to signal integrity is studied in detail. The results show that the coupled microstrip SSPP structure and the differential coupled microstrip SSPP structure have the ability to reduce crosstalk significantly, and a new way to solve the crosstalk problem is provided, according to the characteristics of the new structure. The application of microstrip artificial surface plasmon structure in microwave active components is studied. A novel open-key-control Ook modulator is designed and fabricated using a microstrip SSPP structure. The experimental results show that the design is effective.
【學(xué)位授予單位】：中國科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類號(hào)】：O441.4

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