本文選題：人工電磁材料 + 零折射率��； 參考：《西安電子科技大學(xué)》2014年碩士論文

【摘要】：人工電磁材料是近些年物理學(xué)、材料學(xué)和電磁學(xué)的重要研究熱點(diǎn)之一。該材料具有一些常規(guī)材料所不具有的特性，這些新穎特性能夠應(yīng)用在許多重要領(lǐng)域，突破傳統(tǒng)瓶頸。本文所研究的零折射率材料作為人工電磁材料的一種，具有零折射率、近零相移等特點(diǎn)，近零折射率材料能夠應(yīng)用在很多新型微波器件和天線中。 論文的主要研究?jī)?nèi)容包括： 首先介紹了人工電磁材料的實(shí)現(xiàn)手段和實(shí)現(xiàn)理論，對(duì)具有負(fù)介電常數(shù)和負(fù)磁導(dǎo)率的人工電磁材料及具有零折射率的材料的特性進(jìn)行了系統(tǒng)分析，對(duì)其所具有的特性及能夠應(yīng)用的領(lǐng)域做了闡述。重點(diǎn)分析了實(shí)現(xiàn)機(jī)理不同的幾種零折射率材料單元，其中有磁諧振單元開(kāi)口諧振環(huán)（SRR）、電諧振單元彎折金屬線、電場(chǎng)耦合諧振單元（ELC）以及基于開(kāi)口諧振環(huán)的互補(bǔ)開(kāi)口諧振環(huán)（CSRR）。 然后對(duì)零折射率材料在提高天線增益和定向性方面進(jìn)行了研究，闡述了零折射率覆層的波束匯聚原理，分析了覆層面積、覆層層數(shù)和覆層與天線間距離對(duì)天線性能的影響，并利用金屬過(guò)孔和彎折線組合有效的降低了零折射率材料的響應(yīng)頻率，對(duì)人工電磁材料的均勻性進(jìn)行了改善，，提出了一種應(yīng)用于圓極化天線的零折射率覆層。 對(duì)F-P諧振理論進(jìn)行研究，分析了F-P諧振理論對(duì)確定覆層天線諧振腔高度的有效性，并以F-P理論為指導(dǎo)，設(shè)計(jì)了一種具有負(fù)反射相位和一定反射幅度的零折射率覆層。
[Abstract]:Artificial electromagnetic materials are one of the important research hotspots in physics, materials and electromagnetics in recent years. This material has some characteristics which are not possessed by conventional materials. These novel properties can be applied in many important fields and break through the traditional bottleneck. As a kind of artificial electromagnetic material, the zero refractive index material studied in this paper has the characteristics of zero refractive index and near zero phase shift. The near-zero refractive index material can be used in many new microwave devices and antennas. The main contents of this thesis are as follows: Firstly, the realization method and realization theory of artificial electromagnetic material are introduced, and the characteristics of artificial electromagnetic material with negative dielectric constant and negative permeability and material with zero refractive index are systematically analyzed. The characteristics and application fields are described. Several kinds of zero refractive index material elements with different mechanisms are analyzed, including magnetic resonance unit open resonant ring (SRR), electric resonance element bending metal wire, electric field coupled resonance unit (ELC) and complementary open resonant ring based on open resonance ring (CSRR). Then the zero-refractive index material in improving antenna gain and directionality is studied. The principle of beam convergence of zero-refractive index coating is described. The effects of the area of the coating, the number of layers and the distance between the coating and antenna on the antenna performance are analyzed. The response frequency of zero refractive index material is effectively reduced by the combination of metal through hole and bending line, and the homogeneity of artificial electromagnetic material is improved. A kind of zero refractive index coating applied to circular polarization antenna is proposed. The F-P resonance theory is studied, and the effectiveness of F-P resonance theory in determining the height of cladding antenna resonator is analyzed. A zero-refractive index coating with negative reflection phase and certain reflection amplitude is designed under the guidance of F-P theory.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：O441.6;TN820

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 徐耿釗,張偉華,朱星;奇妙的左手材料[J];物理;2004年11期

本文編號(hào)：1876437