發(fā)布時(shí)間：2018-01-26 09:36

  本文關(guān)鍵詞： 三階阻抗諧振器 馬刺線 展邊矩形環(huán) 帶外抑制 功分器　出處：《西安電子科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著微波通信技術(shù)的的飛速發(fā)展,功率分配器作為關(guān)鍵器件之一廣泛應(yīng)用于無線通信及衛(wèi)星導(dǎo)航系統(tǒng)的天線饋電網(wǎng)絡(luò)與射頻通道中,如天線陣列、功率放大器、移相器以及調(diào)制解調(diào)器等。由于頻率資源日益緊張,對(duì)于多頻功率分配器的需求也隨之增加,其多功能化及集成化已成為當(dāng)前國際該領(lǐng)域的研究熱點(diǎn)。本文研究雙頻和多頻功分器的設(shè)計(jì),基于階梯阻抗諧振器等微帶結(jié)構(gòu),提出了多種雙頻功分器、小型化三頻功分器、改進(jìn)型三頻功分器的設(shè)計(jì)方法。具體工作的主要內(nèi)容如下:首先,本文通過對(duì)國內(nèi)外的大量相關(guān)文獻(xiàn)進(jìn)行整理和分析,總結(jié)了多頻功分器的研究現(xiàn)狀和熱點(diǎn)。然后介紹了功分器的相關(guān)指標(biāo)、設(shè)計(jì)方法和諧振器理論�；赪ilkinson功分器,采用兩階阻抗變換器加載并聯(lián)短路枝節(jié)替代四分之一波長變換器,通過奇-偶模方法和傳輸線理論推導(dǎo)出雙頻功分器的設(shè)計(jì)公式,實(shí)現(xiàn)了工作在0.95GHz和2.2GHz的緊湊型雙頻功分器。然后采用全波仿真軟件進(jìn)行了仿真分析,驗(yàn)證了設(shè)計(jì)方法的準(zhǔn)確性,最后制作電路板并且測(cè)試了該雙頻功分器,最終實(shí)測(cè)結(jié)果與仿真結(jié)果一致,符合設(shè)計(jì)要求。其次,為了滿足多頻微波器件的需求,本文研究了三頻功分器的設(shè)計(jì)。采用三個(gè)相同的三階階梯阻抗諧振器,通過縫隙耦合,實(shí)現(xiàn)了三頻功分器的設(shè)計(jì)。通過折疊微帶線使得整個(gè)功分器的尺寸變小,并且該功分器具有濾波特性。在仿真的基礎(chǔ)上進(jìn)行實(shí)物加工測(cè)試,最終實(shí)測(cè)結(jié)果與仿真結(jié)果基本一致,驗(yàn)證了結(jié)果。最后,基于上述小型化三頻功分器,在諧振器上加載馬刺線結(jié)構(gòu)以及在地板上加載展邊矩形環(huán)缺陷地結(jié)構(gòu),通過調(diào)節(jié)馬刺線和展邊矩形環(huán)的尺寸,實(shí)現(xiàn)了具有良好帶外抑制的三頻功分器。對(duì)實(shí)物進(jìn)行加工測(cè)試,通過仿真和實(shí)測(cè),驗(yàn)證了設(shè)計(jì)方法的有效性和準(zhǔn)確性。
[Abstract]:With the rapid development of microwave communication technology, power divider, as one of the key devices, is widely used in antenna feed network and RF channel of wireless communication and satellite navigation system, such as antenna array, power amplifier. Due to the increasing shortage of frequency resources, the demand for multi-frequency power divider is also increasing. In this paper, the design of dual-frequency and multi-frequency power dividers is studied. Based on the microstrip structure such as step impedance resonator, a variety of dual-frequency power dividers are proposed. The design method of miniaturized three-frequency power divider and improved three-frequency power divider. The main contents of the specific work are as follows: first, this paper collates and analyzes a large number of related literature at home and abroad. This paper summarizes the research status and hot spots of multi-frequency power divider, and then introduces the related indexes, design method and resonator theory of the power divider, based on Wilkinson power divider. The design formula of dual-frequency power divider is derived by using the odd-even mode method and transmission line theory to replace 1/4 wavelength converter with two-order impedance converter loaded parallel short circuit branch. The compact dual-frequency power divider working at 0.95GHz and 2.2GHz is realized. Then the simulation analysis is carried out using full-wave simulation software to verify the accuracy of the design method. Finally, the circuit board is fabricated and the dual-frequency power divider is tested. The measured results are consistent with the simulation results, which meet the design requirements. Secondly, in order to meet the needs of multi-frequency microwave devices. In this paper, the design of three-frequency power divider is studied. Using three identical third-order step impedance resonators, the design of three-frequency power divider is realized by slot coupling. The size of the whole power divider is reduced by folding microstrip line. And the power divider has filtering characteristics. On the basis of simulation, physical processing tests are carried out. The final measured results are basically consistent with the simulation results, and the results are verified. Finally, based on the miniaturization of the three-frequency power divider mentioned above. The Spurs line structure is loaded on the resonator and the defect ground structure is loaded on the floor by adjusting the size of the spurs line and the extended rectangular ring. A tri-frequency power divider with good out-of-band suppression is realized. The validity and accuracy of the design method are verified by simulation and measurement.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN626

【參考文獻(xiàn)】

中國博士學(xué)位論文全文數(shù)據(jù)庫 前1條

1 李久超;多性能微波功率分配器及高性能功率放大器的研究[D];北京郵電大學(xué);2014年

中國碩士學(xué)位論文全文數(shù)據(jù)庫 前2條

1 劉衛(wèi)強(qiáng);超寬帶與三頻功率分配器的設(shè)計(jì)[D];西安電子科技大學(xué);2013年

2 李巧;雙頻帶與寬帶功率分配器設(shè)計(jì)[D];西安電子科技大學(xué);2011年

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本文編號(hào)：1465287