發(fā)布時間：2018-11-16 20:30

【摘要】：隨著無線通信技術(shù)的發(fā)展,要求天線的性能更加的優(yōu)異,同時天線的設計難度也不斷加大。光透明薄膜由于同時具有導電特性和光透明特性的獨特優(yōu)勢,因此可以利用它設計光透明天線,這種光透明天線可以為無線通信中的很多天線難題提供有效的解決方案,例如終端天線、車載天線和星載天線等應用當中。 本文首先介紹了光透明薄膜天線的研究意義和研究現(xiàn)狀,說明了光透明天線應用的優(yōu)勢和亟待解決的難題。接著總結(jié)了光透明薄膜材料的基本性質(zhì)和用途。光透明薄膜的電導率相比金屬的更小,因此光透明薄膜天線的輻射效率很低,此外光透明薄膜材料對溫度非常敏感,難于對其進行熱焊接。針對這一問題,本文研究了透明單極子天線和透明微帶天線提高效率的方法,提出了利用高導電率的金屬覆蓋透明單極子天線電流密度大的區(qū)域來提高其增益,以及利用網(wǎng)格狀金屬結(jié)構(gòu)貼片替代透明薄膜材料貼片來提高微帶天線效率的方法,并通過軟件仿真驗證了方法的可行性。隨后研究了光透明天線的饋電方法。 本文還設計了兩款利用銦錫氧化物(Indium Tin Oxide, ITO)導電薄膜制作的光透明微帶天線,并將其應用在射頻識別系統(tǒng)(Radio Frequency Identification, RFID)當中,作為讀寫器天線使用。首先設計了線極化光透明天線,隨后通過改進天線結(jié)構(gòu)實現(xiàn)了圓極化天線特性。通過電磁仿真軟件CST對兩款天線進行了設計和仿真,并制作了天線實物,測試結(jié)果和仿真結(jié)果匹配良好,各項測試指標表明兩款天線均可以應用在超高頻段的RFID系統(tǒng)當中。隨后對天線中的關鍵結(jié)構(gòu)進行了參數(shù)掃描分析,并總結(jié)了光透明微帶天線設計的方法。這部分工作的創(chuàng)新點在于,提出了利用ITO導電薄膜設計光透明微帶天線,并將其應用在RFID智能試衣間系統(tǒng)當中,彌補了光透明微帶天線領域研究的不足。
[Abstract]:With the development of wireless communication technology, antenna performance is required to be more excellent, at the same time, the design of antenna is becoming more and more difficult. Optical transparent film has the unique advantages of both conductive and transparent characteristics, so it can be used to design optical transparent antenna, which can provide an effective solution for many antenna problems in wireless communication. For example, terminal antenna, vehicle antenna and spaceborne antenna and other applications. In this paper, the research significance and current situation of optical transparent thin film antenna are introduced, and the advantages of optical transparent antenna application and the problems to be solved are explained. Then the basic properties and applications of transparent thin films are summarized. The conductivity of transparent thin film is smaller than that of metal, so the radiation efficiency of transparent film antenna is very low. In addition, the material of transparent film is very sensitive to temperature, so it is difficult to heat weld it. In order to solve this problem, the method of improving the efficiency of transparent monopole antenna and transparent microstrip antenna is studied in this paper, and the gain of transparent monopole antenna is improved by using metal with high conductivity to cover the area with high current density of transparent monopole antenna. The method of improving the efficiency of microstrip antenna by replacing transparent thin film patch with grid metal structure patch is also presented, and the feasibility of the method is verified by software simulation. Then the feeding method of optical transparent antenna is studied. In this paper, we also design two transparent microstrip antennas made from indium tin oxide (Indium Tin Oxide, ITO) conductive thin films, and apply them to the (Radio Frequency Identification, RFID) of radio frequency identification system, which can be used as reader antenna. Firstly, the linear polarized transparent antenna is designed, and then the circular polarization antenna is realized by improving the antenna structure. Two antennas are designed and simulated by electromagnetic simulation software CST, and the antenna object is made. The test results match well with the simulation results. The test results show that the two antennas can be used in the UHF RFID system. Then the key structure of the antenna is analyzed and the design method of the transparent microstrip antenna is summarized. The innovation of this work lies in the design of transparent microstrip antenna using ITO conductive film and its application in RFID intelligent fitting room system, which makes up for the lack of research in the field of optical transparent microstrip antenna.
【學位授予單位】：北京郵電大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN820

【共引文獻】

相關博士學位論文 前3條

1 祝元坤;過濾陰極電弧制備銦摻雜氧化鎘透明導電薄膜的性能研究[D];哈爾濱工業(yè)大學;2013年

2 張維;低成本RFID系統(tǒng)的識別與安全關鍵技術(shù)研究[D];華中科技大學;2014年

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相關碩士學位論文 前10條

1 李建穎;基于RFID技術(shù)的供應鏈契約研究[D];北京郵電大學;2013年

2 劉午妹;ZnO納米棒薄膜及其在DSSC中的應用[D];華中師范大學;2013年

3 楊緒輝;面向《編導與制作》課程的RFID輔助教學系統(tǒng)設計與實現(xiàn)[D];河南師范大學;2013年

4 祁文娟;基于物聯(lián)網(wǎng)技術(shù)的智能家電管理模型設計與驗證[D];中國海洋大學;2013年

5 劉美佳;基于專利分析的RFID技術(shù)演化研究[D];北京工業(yè)大學;2013年

6 胡仁杰;Sn、Al共摻雜ZnO薄膜的制備及其性能研究[D];合肥工業(yè)大學;2013年

7 李乾坤;AZO透明導電薄膜的制備及其光學與電學性能研究[D];湘潭大學;2013年

8 畢景輝;基于物聯(lián)網(wǎng)的信息推送系統(tǒng)的研究[D];電子科技大學;2013年

9 汪見晗;RFID系統(tǒng)的距離邊界協(xié)議研究[D];華中師范大學;2014年

10 俞秋生;基于射頻識別技術(shù)的村鎮(zhèn)固廢監(jiān)控系統(tǒng)研究[D];浙江大學;2014年

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本文編號：2336563