本文選題：波束賦形 + 陣列天線　； 參考：《浙江大學》2014年碩士論文

【摘要】：陣列天線的研究與應用,一直是天線領(lǐng)域的熱點。陣列天線具備了許多單天線無法實現(xiàn)的功能。例如陣列天線可以通過靈活地布陣、控制陣列天線每個單元的相位與幅度關(guān)系,實現(xiàn)對天線波束方向的掃描,或者抑制特定方向上的干擾信號,或?qū)崿F(xiàn)特殊形狀的波束等。在無線通信領(lǐng)域,陣列天線正得到越來越廣泛的應用。 本論文介紹了一種新型的陣列天線波束賦形方法,即通過調(diào)整天線方向圖的零點來實現(xiàn)波束賦形,該方法有別于傳統(tǒng)的控制陣列天線主瓣的波束賦形技術(shù)。本論文首先研究了陣列天線方向圖中的零點對陣列天線整體方向圖形狀的影響。本文從陣列天線的基本公式出發(fā),研究了控制陣列天線零點實現(xiàn)天線波束賦形技術(shù)的物理意義。以陣列天線波束展寬應用為例,在實際應用中,我們需要根據(jù)信號的變化快速地實現(xiàn)陣列天線波束賦形,本論文提出了一種由功率倒置調(diào)零算法演變得到的新型全向波束賦形方法,該算法可以快速擴展陣列天線的波束覆蓋范圍,同時將零點指向特定的無信號傳輸?shù)姆较�。本文通過仿真,驗證了該算法應用在不同陣列天線上的效果,證明該波束賦形方法在不同的陣列天線中,都能快速有效地擴展波束寬度。 本論文比較了陣列天線波束賦形技術(shù)中采用的不同的系統(tǒng)架構(gòu),提出了一種新型的波束賦形系統(tǒng)架構(gòu),該新型系統(tǒng)架構(gòu)大大簡化了傳統(tǒng)陣列天線復雜的電路結(jié)構(gòu)。文章詳細闡述了該新型系統(tǒng)架構(gòu)的基本設計原理,結(jié)合實際應用需要,詳細闡述硬件電路各個模塊的設計思路,最終完成整個電路的設計、制作以及調(diào)試。最后,本論文使用新型的波束賦形系統(tǒng)架構(gòu)驗證了上述陣列天線波束控制方法。實驗測試結(jié)果證明了上述陣列天線波束控制算法能夠快速有效地提高陣列天線的波束覆蓋范圍。
[Abstract]:The research and application of array antenna has been a hot spot in antenna field.The array antenna has many functions which can not be realized by single antenna.For example, the array antenna can control the relationship between the phase and the amplitude of each element of the array antenna flexibly, realize the scanning of the antenna beam direction, or suppress the interference signal in the specific direction, or realize the special shape beam, etc.Array antennas are becoming more and more widely used in the field of wireless communication.In this paper, a new beamforming method of array antenna is introduced, which is different from the traditional beamforming technique which controls the main lobe of array antenna by adjusting the zeros of the antenna pattern.In this paper, the effect of the zeros in the array antenna pattern on the shape of the array antenna pattern is studied.Based on the basic formula of array antenna, the physical significance of controlling array antenna zero to realize antenna beamforming is studied in this paper.Taking the application of array antenna beam broadening as an example, in practical application, we need to quickly realize array antenna beam shaping according to the change of signal.In this paper, a new omnidirectional beamforming method is proposed, which is evolved from the power inversion zeroing algorithm. The algorithm can rapidly extend the beam coverage of the array antenna and point the zero point to a specific direction of unsignaled transmission.The simulation results show that the proposed algorithm is applied to different array antennas. It is proved that the beamforming method can extend the beam width rapidly and effectively in different array antennas.In this paper, the different system architecture used in array antenna beamforming technology is compared, and a new beamforming system architecture is proposed, which greatly simplifies the complex circuit structure of traditional array antenna.In this paper, the basic design principle of the new system architecture is described in detail, and the design ideas of each module of the hardware circuit are described in detail in combination with the practical application needs. Finally, the design, manufacture and debugging of the whole circuit are completed.Finally, the new beamforming system architecture is used to verify the above array antenna beam control method.The experimental results show that the beam control algorithm can improve the coverage of the array antenna quickly and effectively.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN820

【參考文獻】

相關(guān)期刊論文 前2條

1 徐慧;李建新;胡明春;;星載SAR波束展寬研究[J];電子與信息學報;2007年03期

2 高世超;畢紅葵;;一種相控陣天線波束展寬方法研究[J];艦船電子工程;2009年12期

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本文編號：1751516