本文選題：強耦合 + 天線陣列　； 參考：《南京理工大學》2017年碩士論文

【摘要】：現(xiàn)代雷達和通信領域?qū)ο到y(tǒng)多功能化的需求日益迫切,而天線作為系統(tǒng)中重要組成部分,必須適應多設備、多頻段、高集成的發(fā)展趨勢,因此關于超寬帶小型化天線及其陣列的研究已成為國內(nèi)外天線領域的重要課題之一。本文針對此課題并結合近年來興起的強耦合超寬帶陣列,以寬頻帶、低剖面的相控陣列天線作為設計目標,討論了強耦合寬帶天線的幾種陣元形式,給出了幾款超寬帶Vivaldi及偶極子相控陣列的設計方案及工程實現(xiàn)。同時,由于傳統(tǒng)天線設計方法存在著設計方法復雜、設計周期長、過分依賴于天線設計者經(jīng)驗等缺陷,本文也探討了一種新的天線設計及優(yōu)化方案。論文的主要工作如下:1.對強耦合超寬帶Vivaldi相控陣天線的研究該部分闡述了超寬帶陣列天線的設計方法,研究了 Vivaldi陣元的結構尺寸對天線陣列的性能影響,并以Vivaldi天線作為陣元設計了一款相控陣列,該陣列工作帶寬超過十倍頻程且擁有良好的掃描性能。此外,該部分也設計了一款低剖面小型化Vivaldi陣列天線以及一款全金屬強耦合Vivaldi陣列天線。2.對強耦合偶極子相控陣天線以及碎片相控陣天線的研究該部分給出了一款工作頻帶為三倍頻程的偶極子相控陣列,并針對該陣列設計了一款小型化共面巴倫。針對傳統(tǒng)天線設計方法的缺陷,本文提出了一種將遺傳算法和電磁仿真軟件結合的天線設計優(yōu)化方法,設計出的強耦合碎片天線可以擁有更加優(yōu)異的性能。利用該方法將前文中的三倍頻程偶極子天線優(yōu)化為擁有五倍頻程工作帶寬的碎片天線,驗證了方法的可行性。
[Abstract]:The demand for multifunctional system in modern radar and communication field is more and more urgent. As an important part of the system, antenna must adapt to the development trend of multi-equipment, multi-frequency band and high integration. Therefore, the research of UWB miniaturized antenna and its array has become one of the most important topics in the field of antenna at home and abroad. Aiming at this topic and combining with the strong coupling UWB array which has emerged in recent years, this paper discusses several kinds of array element forms of strong coupling wideband antenna with wide band and low profile phased array as the design target. The design scheme and engineering implementation of several UWB Vivaldi and dipole phased array are given. At the same time, due to the shortcomings of the traditional antenna design method, such as complex design method, long design period and excessive dependence on the antenna designer's experience, this paper also discusses a new antenna design and optimization scheme. The main work of the thesis is as follows: 1: 1. Study on the strong Coupling Ultra-Wideband Vivaldi phased Array Antenna in this part, the design method of UWB array antenna is expounded, and the influence of the structure size of the Vivaldi array element on the performance of the antenna array is studied, and a phased array is designed using the Vivaldi antenna as the array element. The operating bandwidth of the array exceeds 10 times the frequency range and has good scanning performance. In addition, a miniaturized Vivaldi array antenna with low profile and an all-metal strongly coupled Vivaldi array antenna. The study on the strong Coupling Dipole phased Array Antenna and the fragment phased Array Antenna in this part, a triple-frequency range dipole phased array is presented, and a miniaturized coplanar Barron is designed for the array. Aiming at the defects of the traditional antenna design method, this paper presents an optimized antenna design method combining genetic algorithm and electromagnetic simulation software. The designed strong coupling fragment antenna can have better performance. Using this method, the triple-frequency range dipole antenna is optimized to a fragment antenna with a five-fold frequency path bandwidth, and the feasibility of the method is verified.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN821.8

【參考文獻】

相關期刊論文 前1條

1 馬永杰;云文霞;;遺傳算法研究進展[J];計算機應用研究;2012年04期

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本文編號：1882311