本文關(guān)鍵詞：微型巴倫濾波器的研究　出處：《南京理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 巴倫濾波器 低溫共燒陶瓷(LTCC) 微型化 多層耦合短路帶狀線

【摘要】：現(xiàn)代無線網(wǎng)絡(luò)和通信技術(shù)飛速發(fā)展,各種網(wǎng)絡(luò)設(shè)備和電子產(chǎn)品都能通過無線方式接入網(wǎng)絡(luò)進(jìn)行通信,這一切得以實現(xiàn)都必須依賴至關(guān)重要的射頻微波模塊和射頻元器件。常用的軍用無線系統(tǒng)和裝備如雷達(dá)、衛(wèi)星通信、衛(wèi)星導(dǎo)航、遙感遙測、遙控等以及民用領(lǐng)域的各種無線電子產(chǎn)品如智能手機(jī)、平板電腦、可穿戴設(shè)備、智能家電、儀器、醫(yī)療設(shè)備、汽車電子設(shè)備等,都不斷的向著小型化、多功能、高性能方向發(fā)展。為了實現(xiàn)各種無線系統(tǒng)和電子產(chǎn)品的小型化,占用較大體積的微波射頻元器件也需要實現(xiàn)小型化。本文對微型巴倫濾波器進(jìn)行了研究。傳統(tǒng)的巴倫濾波器的設(shè)計方法是分別對巴倫和濾波器進(jìn)行設(shè)計,然后通過匹配網(wǎng)絡(luò)把巴倫和濾波器連接起來組合成一個元件。本文采用了多層耦合短路帶狀線結(jié)構(gòu)形成諧振級,這種諧振級尺寸小,而且能夠同時實現(xiàn)巴倫和濾波器功能,避免了分別獨立設(shè)計巴倫和濾波器的復(fù)雜過程。此外這種諧振級可以很方便地實現(xiàn)多級級聯(lián),在多級巴倫濾波器的設(shè)計中還可以通過引入交叉耦合產(chǎn)生傳輸零點提高邊帶陡峭度和阻帶抑制度,因此,與傳統(tǒng)方法設(shè)計的巴倫濾波器相比這種巴倫濾波器可以獲得更好的濾波特性。文中使用LTCC (Low Temperature Co-fired Ceramic,低溫共燒陶瓷)技術(shù)設(shè)計了六款巴倫濾波器,六款巴倫濾波器的尺寸小、結(jié)構(gòu)簡單、且都具有很好的相位平衡度和幅度平衡度,濾波性能優(yōu)良。文中所用的將多種微波分離元器件一體化的設(shè)計方法對其他射頻分離無源器件的小型化集成設(shè)計具有一定的參考價值。六款巴倫濾波器的主要技術(shù)參數(shù)如下：L波段單級巴倫濾波器利用了加載電容的方法來提高濾波特性,尺寸小于1.1mm×2.1mm×1.1mm,通帶為1.6GHz-1.9GHz,相位不平衡度小于±20；S波段二級巴倫濾波器的尺寸小于2.1 mm×1.6mm×1.2mm,通帶為3.15GHz-3.75GHz,相位不平衡度小于±2°；S波段三級巴倫濾波器尺寸小于2.1mm×2.5mm×1.2mm,通帶為3.9GHz-4.3GHz,相位不平衡度小于±30；C波段四級巴倫濾波器的尺寸小于2.6mm×2.9mm×1.2mm,通帶為4.8GHz-5.2GHz,相位不平衡度小于±40：S波段五級巴倫濾波器的尺寸小于2.1mm×3.8mm×1.2mm,通帶為2.1GHz-2.3GHz,相位不平衡度小于±3°；S波段六級巴倫濾波器的尺寸小于4.3mm×.9mm×1.6mm,通帶為2.7GHz-2.9GHz,相位不平衡度小于±4°；四級、五級、六級結(jié)構(gòu)的巴倫濾波器由于采用了更多的級數(shù)同時又引入交叉耦合產(chǎn)生了傳輸零點,因此具有更加陡峭的邊帶和更高的阻帶抑制特性。六款巴倫濾波器最終的仿真結(jié)果都優(yōu)于設(shè)計指標(biāo)要求,都具有小型化、高性能、高可靠性的特點。
[Abstract]:The rapid development of modern network and wireless communication technology, various network equipment and electronic products can communicate through the wireless access network, this realized it must depend on the critical RF module and RF components. Military radio systems commonly used and equipment such as radar, satellite communications, satellite navigation, remote sensing, remote control, etc. The civilian areas of various wireless electronic products such as intelligent mobile phone, tablet computer, wearable devices, intelligent home appliances, instrumentation, medical equipment, automotive electronic equipment, continue towards miniaturization, multi-function, high performance direction. In order to realize the miniaturization of wireless systems and electronic products, occupy a larger volume of RF and microwave components the need to achieve miniaturization. This paper made a research on micro balun filter. The design method of the traditional balun filter is respectively for balun and filter The design of filter, and then through the network, balun and filter are connected into a combination of components. This paper adopts multilayer coupled stripline resonator stage structure forming circuit, the resonant level of small size, but also can realize balun and filter function, avoids the complex process of designed balun and filter. In addition, the resonant level can easily achieve the cascaded multilevel filter design in the balun can also produce transmission zeros to improve the edge with sharp and stopband suppression, therefore, through the introduction of cross coupled balun filter design and traditional methods can achieve better filtering property than the balun filter using LTCC. In this paper (Low Temperature Co-fired Ceramic, LTCC) technology to design six balun filter, six balun filter has the advantages of simple structure, small size, and With phase equilibrium degree and amplitude of good balance, excellent filtering performance. Has a certain reference value for the miniaturization of integrated design method of various microwave separation components integration in terms of the separation of other RF passive devices. The main technical parameters are as follows: six a balun filter L band single balun using the method of filter capacitors loading to improve the filtering characteristics, size less than 1.1mm * 2.1mm * 1.1mm, band 1.6GHz-1.9GHz, phase unbalance is less than 20; two S band balun filter size less than 2.1 mm * 1.6mm * 1.2mm, band 3.15GHz-3.75GHz, phase unbalance is less than 2 degrees; S band three balun filter size is less than 2.1mm * 2.5mm * 1.2mm, band 3.9GHz-4.3GHz, phase unbalance is less than 30; four C band balun filter size less than 2.6mm * 2.9mm * 1.2mm, pass band 4.8 GHz-5.2GHz, phase unbalance is less than five 40:S band balun filter size less than 2.1mm * 3.8mm * 1.2mm, band 2.1GHz-2.3GHz, phase unbalance is less than 3 degrees; six S band balun filter size less than 4.3mm *.9mm * 1.6mm, band 2.7GHz-2.9GHz, phase imbalance of less than plus or minus 4 degrees; four level, five level, six level structure of the balun filter because of the use of more series is also introduced to generate cross coupling transmission zeros, so it has more steep sideband and higher stopband characteristics. Six balun filter the final simulation results are better than the design requirements. It has the advantages of small volume, high performance, high reliability.

【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN713

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 相晉;四端口巴倫與平衡濾波器的研究及其小型化建模[D];西安電子科技大學(xué);2013年

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本文編號：1397135