本文選題：波束賦形 + 陣列天線　； 參考：《浙江大學(xué)》2014年碩士論文

【摘要】：陣列天線的研究與應(yīng)用,一直是天線領(lǐng)域的熱點(diǎn)。陣列天線具備了許多單天線無(wú)法實(shí)現(xiàn)的功能。例如陣列天線可以通過(guò)靈活地布陣、控制陣列天線每個(gè)單元的相位與幅度關(guān)系,實(shí)現(xiàn)對(duì)天線波束方向的掃描,或者抑制特定方向上的干擾信號(hào),或?qū)崿F(xiàn)特殊形狀的波束等。在無(wú)線通信領(lǐng)域,陣列天線正得到越來(lái)越廣泛的應(yīng)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(guò)調(diào)整天線方向圖的零點(diǎn)來(lái)實(shí)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(diǎn)對(duì)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(diǎn)實(shí)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(yīng)用為例,在實(shí)際應(yīng)用中,我們需要根據(jù)信號(hào)的變化快速地實(shí)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(kuò)展陣列天線的波束覆蓋范圍,同時(shí)將零點(diǎn)指向特定的無(wú)信號(hào)傳輸?shù)姆较�。本文通過(guò)仿真,驗(yàn)證了該算法應(yīng)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?cái)U(kuò)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(jiǎn)化了傳統(tǒng)陣列天線復(fù)雜的電路結(jié)構(gòu)。文章詳細(xì)闡述了該新型系統(tǒng)架構(gòu)的基本設(shè)計(jì)原理,結(jié)合實(shí)際應(yīng)用需要,詳細(xì)闡述硬件電路各個(gè)模塊的設(shè)計(jì)思路,最終完成整個(gè)電路的設(shè)計(jì)、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(yàn)證了上述陣列天線波束控制方法。實(shí)驗(yàn)測(cè)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(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN820

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相關(guān)期刊論文 前2條

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本文編號(hào)：1751516