本文選題：人工磁導(dǎo)體(AMC) + 疊層波導(dǎo)(LWG)　； 參考：《南京理工大學(xué)》2016年博士論文

【摘要】：人工磁導(dǎo)體(Artificial magnetic conductor,AMC)結(jié)構(gòu)作為一種超材料,具有在特定頻率范圍內(nèi)對(duì)平面波呈同相位反射的電磁特性,應(yīng)用于天線設(shè)計(jì)中,可突破傳統(tǒng)天線的結(jié)構(gòu)極限,給無(wú)線通信系統(tǒng)中天線的發(fā)展帶來(lái)了新的設(shè)計(jì)思路。隨著無(wú)線通信技術(shù)的發(fā)展,為了滿足高性能、智能化的毫米波系統(tǒng)與移動(dòng)通信系統(tǒng)的發(fā)展需求,對(duì)天線的性能要求也越來(lái)越高,高效率、多功能成為現(xiàn)代微波毫米波天線的發(fā)展趨勢(shì)。因此,探索新型人工磁導(dǎo)體AMC結(jié)構(gòu),開展AMC結(jié)構(gòu)在提高天線效率和實(shí)現(xiàn)多功能特性等方面的應(yīng)用研究,具有很高的學(xué)術(shù)價(jià)值與應(yīng)用價(jià)值。本論文從現(xiàn)代無(wú)線通信系統(tǒng)對(duì)天線的性能需求出發(fā),針對(duì)現(xiàn)有人工磁導(dǎo)體結(jié)構(gòu)的基本特性及其在天線應(yīng)用研究中存在的局限性,我們開展了深入的研究工作。本論文的創(chuàng)新性工作主要以論文的發(fā)表和專利的申請(qǐng)來(lái)體現(xiàn),主體內(nèi)容可以概括如下:1.基于AMC結(jié)構(gòu)的LTCC毫米波天線陣列的高效率、集成化設(shè)計(jì):結(jié)合LTCC多層工藝,提出基于AMC結(jié)構(gòu)的寬帶、高增益的毫米波微帶天線;針對(duì)不同傳輸線在LTCC中的損耗特性,提出低損耗的雙層一分四LWG功分網(wǎng)絡(luò),并與其他網(wǎng)絡(luò)方案進(jìn)行了性能比較和可行性分析;提出緊湊型LWG與矩形波導(dǎo)的過(guò)渡結(jié)構(gòu)的改進(jìn)設(shè)計(jì),并采用背靠背測(cè)試件驗(yàn)證其傳輸性能;將上述工作相結(jié)合,研制出高效率的Ka波段4×4集成天線陣列,提出兩個(gè)用于改善天線陣列性能的工程改進(jìn)技術(shù)。通過(guò)實(shí)物測(cè)試,證實(shí)了提出的集成天線陣列具有穩(wěn)定良好的輻射性能。該工作為基于LTCC技術(shù)的毫米波系統(tǒng)設(shè)計(jì)提供了較大的參考價(jià)值。這部分研究成果已在IEEE Transactions on Antennas and Propagation 期刊和2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference(CSQRWC),2013 IEEE International Workshop on Electromagnetics(iWEM)等會(huì)議上發(fā)表。2.新型支節(jié)加載AMC結(jié)構(gòu)和非周期排布AMC結(jié)構(gòu)的特性分析及在高性能天線中的應(yīng)用:提出了新型的支節(jié)加載的AMC結(jié)構(gòu),給出了等效電路分析;將其應(yīng)用于微帶天線中,分析了其支節(jié)的非周期排布對(duì)天線性能的影響,通過(guò)合理優(yōu)化加載支節(jié)的非周期排布,改善了 AMC結(jié)構(gòu)表面電流和天線輻射口徑場(chǎng)的分布一致性,使天線的帶寬和增益得到了明顯的提高;在此基礎(chǔ)上,將支節(jié)加載型AMC結(jié)構(gòu)等效為長(zhǎng)方形AMC結(jié)構(gòu),結(jié)合寄生貼片思想,同時(shí)打破AMC結(jié)構(gòu)的尺寸周期性和排布周期性,提出三個(gè)高性能微帶天線的設(shè)計(jì)方案,并通過(guò)實(shí)驗(yàn)驗(yàn)證其高效率和寬帶高效率的輻射特性。這部分工作為實(shí)現(xiàn)高性能天線設(shè)計(jì)提供了更大的發(fā)展空間。這部分研究成果已在IEEE Antennas and Wireless Propagation Letters 期刊和 2015 Asia-Pacific Microwave Conference上發(fā)表,其中以基于支節(jié)加載AMC結(jié)構(gòu)的高增益微帶天線申請(qǐng)了一項(xiàng)發(fā)明專利。3.新型的具有極化扭轉(zhuǎn)功能的AMC結(jié)構(gòu)及其特性分析:首次提出新型的具有極化扭轉(zhuǎn)功能的人工磁導(dǎo)體,分析其實(shí)現(xiàn)極化扭轉(zhuǎn)的機(jī)理,提出較為準(zhǔn)確的等效電路;基于二維的Floquet諧波分析理論研究其表面反射場(chǎng)的分布,推導(dǎo)出二維反射系數(shù)與表面阻抗矩陣的關(guān)系;根據(jù)二維反射系數(shù)的幅度和相位分布,進(jìn)一步分析了極化扭轉(zhuǎn)特性及其影響因素,設(shè)計(jì)了具有較寬極化扭轉(zhuǎn)頻帶且?guī)?nèi)綜合場(chǎng)為圓極化波的AMC結(jié)構(gòu);此外,還對(duì)該結(jié)構(gòu)進(jìn)行了結(jié)構(gòu)演變和性能比較,總結(jié)出極化扭轉(zhuǎn)AMC結(jié)構(gòu)的設(shè)計(jì)思路。這部分工作為AMC結(jié)構(gòu)的理論分析與設(shè)計(jì)提供了很好的理論指導(dǎo)。這部分研究成果已在IEEE Transactions on Antennas and Propagation,IET Electronics Letters 期刊和 2014年European Microwave Conference上發(fā)表,并獲得IEEE天線與電波傳播/微波理論與技術(shù)香港分會(huì)主辦、香港中文大學(xué)承辦的第15屆研究生學(xué)生競(jìng)賽---天線與電波傳播組最佳論文獎(jiǎng)第一名;還以基于人工磁導(dǎo)體的低剖面極化扭轉(zhuǎn)反射板申請(qǐng)了一項(xiàng)發(fā)明專利。4.極化扭轉(zhuǎn)AMC結(jié)構(gòu)在新型的低剖面、寬波束的圓極化天線和極化可重構(gòu)天線上的應(yīng)用:將提出的極化扭轉(zhuǎn)AMC結(jié)構(gòu)應(yīng)用到偶極子天線中,利用其特殊的極化扭轉(zhuǎn)特性,提出兩種新型的低剖面、寬帶、寬波束的圓極化偶極子天線,并對(duì)其進(jìn)行性能比較,發(fā)現(xiàn)基于雙金屬柱極化扭轉(zhuǎn)AMC結(jié)構(gòu)的天線可實(shí)現(xiàn)對(duì)稱性更好、低仰角特性更好的寬波束圓極化輻射特性;在此基礎(chǔ)上,將極化扭轉(zhuǎn)AMC結(jié)構(gòu)與交叉偶極子天線相結(jié)合,提出可實(shí)現(xiàn)右旋圓極化、左旋圓極化和+45°線極化三種極化狀態(tài)的多極化天線;結(jié)合開關(guān)控制的可重構(gòu)網(wǎng)絡(luò),實(shí)現(xiàn)了三種極化快速切換的新型極化可重構(gòu)天線。這部分工作為實(shí)現(xiàn)結(jié)構(gòu)新穎和原理簡(jiǎn)單的可重構(gòu)天線提供了很好的設(shè)計(jì)方案,為現(xiàn)代無(wú)線通信系統(tǒng)的多功能性能需求提供了技術(shù)參考。這部分工作與前面工作結(jié)合,已在IEEE Transactions on Antennas and Propagation 期刊和2015年Asia-Pacific Conference on Antennas and Propagation 上發(fā)表;還有 1 篇已錄用于 IEEE Transactions on Antennas and Propagation。
[Abstract]:As a supermaterial, the Artificial magnetic conductor (AMC) structure has the electromagnetic characteristic of the same phase reflection to the plane wave in a specific frequency range. It can be applied to the antenna design. It can break through the limit of the structure of the traditional antenna and bring a new design idea to the development of the antenna in the wireless communication system. In order to meet the development demand of high performance and intelligent millimeter wave system and mobile communication system, the development of the letter technology is becoming more and more demanding for the performance of the antenna. High efficiency and multifunction become the development trend of modern microwave millimeter wave antenna. Therefore, the structure of the new type of artificial magnetic conductor AMC is explored and the structure of AMC is carried out to improve the efficiency and reality of the antenna. In this paper, we have carried out a deep research work on the basic characteristics of the existing artificial magnetic conductor structure and its limitations in the research of the antenna application. The innovative work is mainly embodied in the publication of the paper and the application of the patent. The main content can be summarized as follows: 1. the high efficiency and integrated design of the LTCC millimeter wave antenna array based on the AMC structure: combining with the LTCC multilayer technology, the broadband, high gain milli wave microstrip antenna based on the AMC structure and the loss of the different transmission lines in the LTCC are proposed. The low loss double decker four LWG power network is proposed and the performance comparison and feasibility analysis are carried out with other network schemes. The improved design of the transition structure of the compact LWG and the rectangular waveguide is proposed, and the back to back test parts are used to verify the transmission performance, and the efficient Ka band 4 x 4 set is developed by combining the above work. Two engineering improvements are proposed to improve the performance of antenna arrays. Through physical testing, it is proved that the proposed integrated antenna array has good radiation performance. This work provides a great reference for the design of the millimeter wave system based on LTCC technology. This part of the research results has been in the IEEE Transactions on. Antennas and Propagation periodicals and 2013 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference. Application: a new type of AMC structure loaded with joint is proposed and the equivalent circuit analysis is given. It is applied to the microstrip antenna. The effect of the non periodic arrangement of the joint on the performance of the antenna is analyzed. The distribution uniformity of the surface current of the AMC structure and the antenna radiant aperture field is improved by optimizing the non periodic arrangement of the load section. The bandwidth and gain of the line are obviously improved. On this basis, the AMC structure is equivalent to a rectangular AMC structure. Combined with the idea of parasitic patch, the size periodicity and the periodicity of the AMC structure are broken at the same time, the design of three high performance microstrip antennas is proposed, and the high efficiency and broadband efficiency are verified by experiments. This part of the work provides a greater development space for high performance antenna design. This part of the research has been published on the IEEE Antennas and Wireless Propagation Letters journal and 2015 Asia-Pacific Microwave Conference, in which a high gain microstrip antenna based on a node loaded AMC structure has been applied for the application of a high gain Microstrip antenna. .3. new type of AMC structure with polarization and torsion function and its characteristics analysis: a new type of artificial magnetic conductor with polarization torsion function is first proposed, the mechanism of polarization torsion is analyzed, and a more accurate equivalent circuit is put forward. Based on the two-dimensional Floquet harmonic analysis theory, the distribution of the surface reflection field is studied and the derivation is derived. The relationship between the two-dimensional reflection coefficient and the surface impedance matrix is obtained. According to the amplitude and phase distribution of the two-dimensional reflection coefficient, the polarization and torsion characteristics and its influencing factors are further analyzed. A AMC structure with a wide polarization torsion band and a circular polarization wave with a comprehensive field in the band is designed. Furthermore, the structure evolution and performance comparison are also carried out. The design idea of the polarized torsional AMC structure is summarized. This part provides a good theoretical guide for the theoretical analysis and design of the AMC structure. The results have been published on the IEEE Transactions on Antennas and Propagation, IET Electronics Letters periodicals and 2014 European. Line and wave propagation / microwave theory and technology Hongkong branch sponsored by the Hongkong branch, the fifteenth graduate student competition held by Chinese University Hong Kong, the first prize for the best paper award for the antenna and wave propagation group, and the application of a low profile polarized torsional reflector based on artificial magnetic conductors to invent a special.4. polarization torsion AMC structure in the new low profile Application of wide beam circular polarized antenna and Polarization Reconfigurable Antenna: the proposed polarization torsional AMC structure is applied to the dipole antenna. Using its special polarization and torsion characteristics, two new type of circular polarized dipole antennas with low profile, wide band and wide beam are proposed, and their performance is compared, and the polarization torsion based on bimetallic columns is found. The antenna with AMC structure can achieve better symmetry and better wide beam circular polarization characteristics with low elevation characteristics. On this basis, the polarization torsional AMC structure is combined with a cross dipole antenna, and a multi polarized antenna with three polarization states, which can realize right circular polarization, left circular polarization and +45 degree line polarization, is proposed. Three new polarization reconfigurable antennas with fast polarization switching are realized. This part provides a good design scheme for the realization of novel and simple reconfigurable antennas. It provides a technical reference for the multi-functional performance requirements of modern wireless communication systems. This part of the work is combined with the previous work and has been in the IEEE T The ransactions on Antennas and Propagation journal and the Asia-Pacific Conference on Antennas and Propagation are published in 2015; and 1 also have been recorded for IEEE.

【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類號(hào)】：TN820

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本文編號(hào)：1845111