本文選題：陷波功能 + 開口諧振環(huán)　； 參考：《廣東工業(yè)大學》2017年碩士論文

【摘要】：隨著高清圖片、視頻、流媒體等大量復雜信息的高速數(shù)據(jù)傳輸成為當今社會的日益迫切的新需求,對無線通信系統(tǒng)的帶寬、傳輸速率等提出了更高的要求。超寬帶通信技術成為無線通信領域中最有競爭力和發(fā)展前景的技術之一,并成功應用于通信傳感、高分辨率雷達、無線定位追蹤、監(jiān)控等領域。美國聯(lián)邦通信委員會于2002年將超寬帶無線通信業(yè)務分配為3.1 GHz-10.6 GHz頻段,超寬帶通信系統(tǒng)成為國內(nèi)外學術界和工商界研究的新熱點。超寬帶天線是超寬帶系統(tǒng)中最重要的組成部分之一,擔負了收發(fā)信號等重要任務。然而隨著各種窄帶通信系統(tǒng)不斷增多,頻譜資源也日益緊張。目前全球微波接入互操作系統(tǒng)和無線局域網(wǎng)等窄帶無線通信系統(tǒng)的工作頻段包含于超寬帶無線通信頻段內(nèi),為了抑制各個通信系統(tǒng)之間的潛在干擾,將這些頻段從超寬帶頻段中隔離出去。因此需要設計出具有阻帶特性即陷波功能的超寬帶天線,使天線在這些窄帶頻段呈現(xiàn)出阻帶或者“鈍化”特性,即無法有效的輻射和接收空間中的電磁波。本文的主要研究和創(chuàng)新工作總結(jié)如下:[1]本文簡述了超寬帶天線的發(fā)展歷史和基本理論以及陷波超寬帶天線的發(fā)展和研究現(xiàn)狀。[2]本文首先設計了第一款平面球拍形單極子雙陷波超寬帶天線,通過分別在球拍形輻射貼片和矩形饋電線上蝕刻倒C形槽和類U形槽,實現(xiàn)兩個陷波頻段(3.3 GHz-3.7 GHz,5.15 GHz-5.825 GHz)。接著,本文設計了第二款平面橢圓縫隙結(jié)構(gòu)的超寬帶天線,為后文的三重陷波天線做技術鋪墊。最后,根據(jù)第一款天線的陷波技術和第二款天線的研究基礎,本文設計了第三款具有三重陷波特性的超寬帶天線,通過在基板底面添加一個不對稱開口的諧振環(huán),以實現(xiàn)該天線在X波段衛(wèi)星通信系統(tǒng)(7.25 GHz-8.4GHz)頻段產(chǎn)生陷波特性。[3]本文作者加工了三款天線,其S_(11)和電壓駐波比表明:設計的天線工作頻段能夠完整覆蓋超寬帶頻段,在需要陷波的窄帶通信頻段具備良好的帶阻、陷波功能,實物測量和軟件仿真的結(jié)果大致統(tǒng)一。天線的2D/3D輻射方向圖表明:兩款陷波天線在超寬帶通信系統(tǒng)的工作頻段內(nèi)具有穩(wěn)定的、統(tǒng)一的輻射特性,在陷波頻段表現(xiàn)出較好的帶阻特性,具有一定的實用價值。
[Abstract]:With the high speed data transmission of high definition picture, video, streaming media and other complex information, it is becoming an urgent new demand for wireless communication system bandwidth, transmission rate and so on. Ultra-wideband (UWB) communication technology has become one of the most competitive and promising technologies in the field of wireless communication, and has been successfully applied in the fields of communication sensing, high-resolution radar, wireless positioning tracking, monitoring and so on. UWB wireless communication service was allocated to 3.1 GHz ~ 10.6 GHz band by the Federal Communications Commission in 2002. UWB communication system has become a new research hotspot in academic and industrial circles at home and abroad. UWB antenna is one of the most important components of UWB system. However, with the increasing number of narrowband communication systems, spectrum resources are becoming increasingly scarce. At present, the working frequency bands of narrowband wireless communication systems such as the global microwave access mutual operating system and wireless local area network are included in the frequency band of ultra-wideband wireless communication. In order to suppress the potential interference between various communication systems, Isolate these bands from the UWB band. Therefore, it is necessary to design an ultra-wideband antenna with stopband characteristic, i.e. notch wave function, so that the antenna presents stopband or "passivation" characteristics in these narrow band bands, that is, the electromagnetic wave in the space of radiation and reception cannot be effectively radiated. The main research and innovation work of this paper are summarized as follows: [1] the development history and basic theory of UWB antenna and the development and research status of notch UWB antenna are briefly described in this paper. [2] the first planar racket shape is designed in this paper. Monopole double notch UWB antenna, Two notch bands (3.3 GHz-3.7 GHz ~ 5.15 GHz ~ 5.825 GHz) are realized by etching inverted C-shaped slot and U-like groove on the racket radiation patch and rectangular feed line, respectively. Then, the second UWB antenna with elliptical slot structure is designed, which lays the groundwork for the triple-notch antenna. Finally, according to the notch technique of the first antenna and the research foundation of the second antenna, the third UWB antenna with triple notch characteristic is designed, by adding an asymmetric resonant ring to the bottom of the substrate. In order to realize the trapping characteristic of the antenna in X-band satellite communication system (7.25GHz-8.4GHz), three antennas have been fabricated in this paper. The S _ (11) and VSWR of the antenna show that the designed antenna can fully cover the UWB band. It has good bandstop, notch function, physical measurement and software simulation results in narrow band communication band where notch wave is needed. The 2D / 3D radiation pattern of the antenna shows that the two notch antennas have stable and uniform radiation characteristics in the operating frequency band of UWB communication system, and show good bandstop characteristics in the notch frequency band, and have certain practical value.
【學位授予單位】：廣東工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN822.8

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