【摘要】：隨著現(xiàn)代社會(huì)通信技術(shù)的不斷發(fā)展,電子信息產(chǎn)品的設(shè)備形態(tài)和功能應(yīng)用的不斷演化,以人體為中心的無線通信系統(tǒng)以及物聯(lián)網(wǎng)技術(shù)成為當(dāng)前以及未來一段時(shí)間信息通信技術(shù)的熱點(diǎn)。因此,研制一種新型穿戴式射頻識(shí)別讀卡器天線具有重要的實(shí)際意義。與一般的射頻識(shí)別天線不同,穿戴式射頻識(shí)別天線既要在水平方向能夠讀取近距離環(huán)境中的標(biāo)簽,又能在垂直方向上通過導(dǎo)航或定位系統(tǒng)跟遠(yuǎn)方控制中心實(shí)現(xiàn)通信連接。論文先用V形開口環(huán)與水平振子實(shí)現(xiàn)圓極化性能,然后再與平面磁偶極子天線進(jìn)行組合,使天線在天頂方向具有圓極化輻射特性,方位面具有足夠的增益和較寬的波束,從而能夠同時(shí)滿足穿戴式射頻識(shí)別和通信的功能。論文的主要工作如下:1.首先從基本振子理論出發(fā),建立天線的等效源模型,提出同時(shí)實(shí)現(xiàn)較寬方位面波束、水平覆蓋增益和特定方向上圓極化特性的基本原理。2.在上述理論研究的基礎(chǔ)上,設(shè)計(jì)了一種V形開口環(huán)和水平振子組合天線,并通過引入諧振腔(即平面磁偶極子)使天線在方位面波束得到展寬。利用電磁仿真軟件IE3D建立模型與優(yōu)化,對(duì)該天線的反射系數(shù)、軸比、輻射方向圖和增益效率等參數(shù)進(jìn)行了研究分析,驗(yàn)證了該組合天線既具有一定的定向性,又有一定寬波束。最后根據(jù)軟件中的模型制造出實(shí)物,通過對(duì)比實(shí)物測(cè)量和仿真結(jié)果,驗(yàn)證其可行性。3.在上述天線模型的基礎(chǔ)上,使用電磁仿真軟件CST建立人體模型,將天線和人體模型一起仿真,同樣對(duì)該天線的反射系數(shù)、軸比等參數(shù)進(jìn)行分析,最后通過實(shí)物測(cè)量驗(yàn)證該天線的可穿戴性能。
[Abstract]:With the development of communication technology in modern society, the application of equipment and function of electronic information products is evolving. The wireless communication system centered on human body and the Internet of things technology have become the focus of information and communication technology at present and in the future. Therefore, the development of a new wearable RFID card reader antenna has important practical significance. Unlike conventional RFID antennas, wearable RFID antennas can not only read tags in close range in horizontal direction, but also communicate with remote control center in vertical direction through navigation or positioning system. In this paper, the circular polarization is realized by using V-shaped open loop and horizontal dipole, and then combined with planar magnetic dipole antenna to make the antenna have circular polarization radiation in the zenith direction, and the azimuth mask has enough gain and wide beam. Thus, the wearable radio frequency identification and communication functions can be satisfied at the same time. The main work of this paper is as follows: 1. Based on the basic oscillator theory, the equivalent source model of the antenna is established, and the basic principle of simultaneously realizing the broad azimuth plane beam, the horizontal coverage gain and the circular polarization characteristics in a specific direction is presented. 2. On the basis of the above theoretical research, a V-shaped open loop and horizontal dipole combined antenna is designed, and the antenna beam in azimuth plane is broadened by the introduction of a resonant cavity (i.e. planar magnetic dipole). The electromagnetic simulation software IE3D is used to model and optimize the antenna. The reflection coefficient, axial ratio, radiation pattern and gain efficiency of the antenna are studied and analyzed. The results show that the combined antenna has both directional and wide beam. Finally, according to the model in the software, the physical object is manufactured, and the feasibility is verified by comparing the physical measurement with the simulation results. On the basis of the above antenna model, the human body model is established by using electromagnetic simulation software CST, and the antenna and human body model are simulated together. The reflection coefficient and axial ratio of the antenna are also analyzed. Finally, the wearability of the antenna is verified by physical measurement.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN828

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本文編號(hào)：2320264