【摘要】：隨著科技的進(jìn)步,微波器件正朝著高性能、多用途和小型化的方向發(fā)展。濾波器作為無線系統(tǒng)中的主要器件,發(fā)揮著重要作用,它們的性能好壞與尺寸大小將對整個系統(tǒng)產(chǎn)生重要的影響,濾波器小型化因此成為當(dāng)前微波無源器件領(lǐng)域的研究熱點。論文工作基于上述背景,以基片集成波導(dǎo)(SIW)技術(shù)為研究基礎(chǔ),以濾波器結(jié)構(gòu)的小型化為研究方向,依次研究了雙模諧振、微擾結(jié)構(gòu)以及微帶開口諧振環(huán)對基片集成波導(dǎo)/半模基片集成波導(dǎo)腔體諧振特性的影響,設(shè)計出一系列基片集成波導(dǎo)腔體濾波器;在此基礎(chǔ)之上,進(jìn)一步研究了相關(guān)濾波結(jié)構(gòu)在濾波天線方面的應(yīng)用。主要研究內(nèi)容包括以下幾點:1、基片集成波導(dǎo)腔體濾波器設(shè)計。針對不同形狀的基片集成波導(dǎo)腔體:矩形腔、圓形腔、三角形腔和混合形腔,分別進(jìn)行了研究。在此基礎(chǔ)之上,設(shè)計了這基于這種四種形狀的基片集成波導(dǎo)腔體濾波器。2、基于半�；刹▽�(dǎo)(HMSIW)技術(shù),設(shè)計了半模基片集成波導(dǎo)濾波器。在性能不變的前提下,所設(shè)計的濾波器與基片集成波導(dǎo)濾波器相比,尺寸減少一半。3、基于雙模諧振諧振腔技術(shù),設(shè)計了基片集成波導(dǎo)雙模濾波器。在雙模諧振條件下,以單個腔體實現(xiàn)了以往多個主模諧振腔體的濾波效果。在此基礎(chǔ)之上,還通過添加微擾柱進(jìn)行額外的擾動,提高了濾波器性能。4、利用縫隙結(jié)構(gòu)的微擾作用,通過在濾波器表面分別蝕刻交叉縫隙、T形縫隙、H形縫隙,改變了表面電流流向,降低了諧振頻率,減小了濾波器尺寸。5、基于復(fù)合開口諧振環(huán)(CSRR)技術(shù),設(shè)計了基片集成波導(dǎo)CSRR濾波器,在低于SIW的截止頻率處產(chǎn)生了新的通帶,降低了諧振頻率,減小了濾波器尺寸。6、將濾波器與天線進(jìn)行集成設(shè)計,設(shè)計了多款基于基片集成波導(dǎo)結(jié)構(gòu)的濾波天線。所設(shè)計的天線同時具有濾波與輻射的特性,除具有較好的增益與方向性之外,還具有較高的帶外抑制能力。
[Abstract]:With the development of science and technology, microwave devices are developing towards high performance, multi-purpose and miniaturization. As the main devices in wireless systems, filters play an important role. Their performance and size will have an important impact on the whole system. Therefore, the miniaturization of filters has become a hot topic in the field of microwave passive devices. Based on the above background, based on the substrate integrated waveguide (SIW) technology and the miniaturization of the filter structure, the two-mode resonance is studied in turn. A series of substrates integrated waveguide cavity filters are designed because of the influence of the perturbation structure and the microstrip open resonant ring on the resonant characteristics of the substrate integrated waveguide / half mode integrated waveguide cavity. On this basis, the application of correlation filter structure in filtering antenna is further studied. The main contents are as follows: 1. Substrate integrated waveguide cavity filter design. The integrated waveguide cavities with different shapes, including rectangular cavity, circular cavity, triangular cavity and mixed cavity, are studied respectively. On the basis of this, we design the integrated waveguide cavity filter based on the four shapes. 2. Based on the half-mode substrate integrated waveguide (HMSIW) technology, the half-mode substrate integrated waveguide filter is designed. On the premise of constant performance, the size of the designed filter is reduced by half compared with the substrate integrated waveguide filter. 3. Based on the dual-mode resonator technology, the substrates integrated waveguide dual-mode filter is designed. Under the condition of double mode resonance, the filtering effect of previous main mode resonators is realized with a single cavity. On this basis, the performance of the filter is improved by adding the perturbation column to the filter. 4. By etching the cross slot, T-shaped slot, H-shaped slot on the surface of the filter respectively, the perturbation effect of the gap structure is used. The surface current flow is changed, the resonant frequency is reduced, and the filter size is reduced. 5. Based on the compound open resonant ring (CSRR) technology, a substrate integrated waveguide CSRR filter is designed, which produces a new passband at the cut-off frequency below the SIW. The resonant frequency is reduced and the size of the filter is reduced. 6. The filter and antenna are integrated to design several filter antennas based on substrate integrated waveguide structure. The designed antenna has the characteristics of both filtering and radiation. Besides the good gain and directivity, the antenna also has a high out-of-band suppression capability.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN713;TN92
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本文編號：2366356