本文關鍵詞：L波段單脈沖天線陣列設計與研究　出處：《合肥工業(yè)大學》2016年碩士論文　論文類型：學位論文

  更多相關文章： L波段 單脈沖 天線陣列 環(huán)形電橋 和差網絡

【摘要】：隨著單脈沖天線各種新技術的涌現(xiàn),單脈沖天線的形式越來越多樣化。因此對于單脈沖天線及其饋電網絡的研究顯得尤為重要。本文根據微帶縫隙耦合天線及天線陣列理論,設計了兩款L波段的單脈沖天線陣列。本文首先采用微帶縫隙耦合天線作為天線單元,組成了4x4的天線陣列,并且根據Gysel功分器拓撲結構改進的新型環(huán)形電橋作為和差網絡。接著設計了一款一維L波段的單脈沖天線陣列,并且為了克服互耦帶來的負面影響,減小各天線單元間的互耦作用,本文對此問題進行了著重研究與分析。在上述工作的基礎上,為了克服一維單脈沖天線的不足,又對饋電網絡進行了改進。利用三分支微帶耦合器和90°移相器構成了一個十字形微帶和差器,以此來做為單脈沖天線陣列的和差網絡。并設計了一款二維L波段的單脈沖天線陣列,該天線陣列能夠同時獲取方位信息和俯仰信息。在HFSS軟件仿真的結果表明,這兩款單脈沖天線的方向圖性能良好,和方向的最大增益均在16dB左右,差方向的最大增益都在13dB以上,零深也都優(yōu)于-30dB,各端口的駐波比在工作頻帶內小于2,天線的各項指標均滿足了設計要求。本文設計的這兩款單脈沖天線的饋電結構與天線貼片置于同一平面中,所以該天線克服了傳統(tǒng)單脈沖天線的體積龐大,支撐結構復雜等缺點,更容易進行系統(tǒng)和天線的集成,適應了現(xiàn)代天線發(fā)展的需要。
[Abstract]:With the single pulse antenna all the emergence of new technology, single pulse antenna form more and more diverse. It is important to study the single pulse antenna and feed network. Based on the coupled microstrip slot antenna and antenna array theory, the two L band monopulse antenna array is designed. This paper adopts microstrip slot antenna coupling as the antenna unit, the antenna array of 4x4 components, and according to the new ring bridge topology Gysel power divider is improved as the sum and difference network. Then the design of single pulse antenna array is a one-dimensional L band, and in order to overcome the negative effects brought by mutual coupling, reducing the effect of mutual coupling between the antenna unit, for the study and analysis of this issue. Based on the above work, in order to overcome the shortcomings of mono pulse antenna, the feed network is improved by three. Microstrip coupler and 90 degrees phase shifter to form a cross shaped microstrip and difference, as a single pulse antenna array and difference network. And the design of the monopulse antenna array is a two-dimensional L band, the antenna array can also obtain azimuth information and elevation information. That in the simulation software of HFSS results the two single pulse antenna with good performance, the maximum gain and direction were about 16dB, the maximum gain difference direction is above 13dB, zero deep are better than those of -30dB, Bobbi in the port in the working frequency band is less than 2, the index of the antenna can meet the design requirements in this paper. The design of the two monopulse antenna feed structure and the patch of the antenna on the same plane, so the antenna overcomes the traditional monopulse antenna size, complexity of the supporting structure, more easily integrated system and antenna, It adapts to the needs of modern antenna development.

【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TN820.15

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