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  本文選題：微帶天線 + CSRR�。� 參考：《山東科技大學》2017年碩士論文

【摘要】：左手材料由于同時具有負介電常數和負磁導率而表現出奇異的電磁特性,自從被人工合成研制成功后,左手材料成為物理與電磁學界的主要研究對象。左手材料的主要實現形式有:開口諧振環(huán)(Split Ring Resonator,SRR)、互補開口諧振環(huán)(Complementary Split Ring Resonator, CSRR)�；谒鼈兊钠矫娼Y構,單元尺寸小,易于通過微帶技術實現等優(yōu)點,SRR和CSRR受到廣泛的關注,并應用于天線及濾波器等微波器件中。現在,微型化的微波器件成為不懈的追求。由于互補開口諧振環(huán)結構更加容易制造,因此,其在實際應用中更受追捧�；贑SRR結構的電磁性能,本文主要研究微帶天線陣間的互耦,并在天線陣中加載CSRR來抑制耦合。此外,通過該結構設計了一款低通濾波器,取得了小型化、高性能的效果。本文的主要工作包括:(1)闡述了左手材料的基礎知識,并介紹了 CSRR的基本結構組成,詳細分析了該結構的電磁性能,介紹了 FEM和MOM兩種數值分析方法,并結合Matlab編程驗證了其可行性、實用性。(2)首先設計了一個7.55GHz的微帶貼片天線陣,簡單介紹了微帶天線陣之間的相互耦合形成過程。然后,利用CSRR結構與缺陷地結構相結合,加載到微帶貼片天線陣間。通過改變天線陣接地板上的電場分布,實現了抑制天線陣互耦效應的效果。在諧振中心頻率處,S12可達-47.6dB,取得了很好的抑制效果。該結構加工方便,而且不影響介質板大小,有益于天線的小型化。(3)簡單介紹了濾波器的基礎性能后,根據CSRRDGS結構,設計了一款低通濾波器。設計并分析了 CSRRDGS結構和等效電路,基于HFSS軟件仿真了不同參數對該結構的影響。將對稱性的開路枝節(jié),加載到微帶線兩端。CSRRDGS結構的阻帶帶寬,得到了一定程度的拓展。在此基礎上,設計了級聯不同CSRRDGS個數的低通濾波器,并取得了良好的效果。
[Abstract]:Left-handed materials exhibit singular electromagnetic properties due to their negative permittivity and negative permeability. Since they were synthesized and developed, left-handed materials have become the main research objects in physics and electromagnetics. The main realization forms of Left-handed materials are as follows: split Ring resonator and complementary Split Ring Resonator, Split Ring Resonator,. Because of their planar structure, small unit size and easy to be realized by microstrip technology, SRR and CSRR have attracted wide attention, and have been applied to microwave devices such as antennas and filters. Now, miniaturized microwave devices have become the unremitting pursuit. Because the structure of complementary open resonant ring is easier to manufacture, it is more popular in practical application. Based on the electromagnetic performance of CSRR structure, the mutual coupling between microstrip antenna arrays is studied in this paper, and CSRR is loaded into the antenna array to suppress the coupling. In addition, a low-pass filter is designed through this structure, which achieves miniaturization and high performance. In this paper, the basic knowledge of left-handed materials is introduced, the basic structure of CSRR is introduced, the electromagnetic properties of the structure are analyzed in detail, and two numerical analysis methods, FEM and MOM, are introduced. A microstrip antenna array of 7.55GHz is designed, and the mutual coupling process between microstrip antenna array is briefly introduced. Then, the CSRR structure is combined with the defective ground structure and loaded into the microstrip patch antenna array. By changing the distribution of electric field on the floor of antenna array, the effect of restraining the coupling effect of antenna array is realized. At the resonant center frequency, the S12 can reach -47.6dB, and the inhibition effect is very good. The structure is easy to process and does not affect the size of the dielectric plate. It is beneficial to the miniaturization of the antenna. After introducing the basic performance of the filter, a low-pass filter is designed according to the CSRRDGS structure. The CSRRDGS structure and equivalent circuit are designed and analyzed. The influence of different parameters on the structure is simulated based on HFSS software. The symmetrical open-circuit section is loaded into the stopband bandwidth of the CSRRDGS structure at both ends of the microstrip line, which is extended to a certain extent. On this basis, the low pass filter with different number of cascaded CSRRDGS is designed, and good results are obtained.
【學位授予單位】：山東科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN822;TN713

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本文編號：1929492