本文選題：可重構(gòu)濾波器　切入點(diǎn)：變?nèi)荻䴓O管　出處：《電子科技大學(xué)》2017年碩士論文

【摘要】：近年來,通訊技術(shù)發(fā)展迅猛,需要支持多個(gè)網(wǎng)絡(luò)協(xié)議的通信應(yīng)用越來越多。可重構(gòu)濾波器作為可重構(gòu)射頻前端的重要組成部分,在保證濾波器通帶選擇的同時(shí),還要滿足各類可重構(gòu)功能。因此,調(diào)諧速度快、調(diào)諧模式多、體積小集成度高成本低、損耗小和高可靠性的可重構(gòu)濾波器成為研究熱點(diǎn)。本文采用以調(diào)節(jié)方式便捷的變?nèi)荻䴓O管和PIN二極管作為可重構(gòu)元件,通過研究加載方式和分析可重構(gòu)原理,在傳輸線末端以及諧振器之間引入可重構(gòu)元件,利用奇偶模分析法和電磁仿真軟件進(jìn)行計(jì)算和驗(yàn)證,最終設(shè)計(jì)了三款不同功能的可重構(gòu)濾波器:1.基于對(duì)E型雙模諧振器進(jìn)行的奇偶模分析,通過在枝節(jié)處引入變?nèi)荻䴓O管,設(shè)計(jì)出雙通帶頻率可重構(gòu)的帶通濾波器。變?nèi)荻䴓O管影響了偶模的諧振頻率,通過選用變?nèi)荼却蟮亩䴓O管以及合適的饋電方式,實(shí)現(xiàn)了第二通帶中心頻率寬幅度變化;當(dāng)兩個(gè)通帶的中心頻率重合時(shí),可以實(shí)現(xiàn)單雙通帶切換的功能,并且保證兩個(gè)通帶的絕對(duì)帶寬不變。2.經(jīng)過對(duì)多模諧振器的研究,在E型雙模諧振器上加載開路枝節(jié)形成三模諧振器,設(shè)計(jì)了一款寬帶帶通濾波器,通帶內(nèi)群延時(shí)較平坦,通帶選擇性較好。緊接著分析了該三模諧振器的諧振特性,獲得了三個(gè)極點(diǎn)的變化規(guī)律,上下兩個(gè)開路枝節(jié)長(zhǎng)度分別控制高低頻極點(diǎn)的位置,中間傳輸線的長(zhǎng)度控制中間極點(diǎn)的位置。進(jìn)而通過在傳輸線兩端以及開路枝節(jié)末端引入變?nèi)荻䴓O管,設(shè)計(jì)了一款中心頻率不變,絕對(duì)帶寬可重構(gòu)的帶通濾波器。3.在前兩個(gè)可重構(gòu)濾波器設(shè)計(jì)的基礎(chǔ)上,最后完成了三個(gè)三節(jié)SIR單元通過變?nèi)荻䴓O管相互耦合,實(shí)現(xiàn)中心頻率和帶寬獨(dú)立可重構(gòu)的帶通濾波器。采用PIN二極管作為射頻開關(guān),通過四選一通路,選擇不同阻抗和電長(zhǎng)度的接地傳輸線,完成中心頻率可重構(gòu);在其中一路通路下,調(diào)節(jié)用于諧振器之間耦合的變?nèi)荻䴓O管,改變耦合系數(shù),完成帶寬可重構(gòu)。三款可重構(gòu)濾波器都經(jīng)過分析、討論和驗(yàn)證,實(shí)測(cè)結(jié)果的可調(diào)范圍較寬且易于調(diào)控,同時(shí)實(shí)現(xiàn)了小型化和高穩(wěn)定性。
[Abstract]:In recent years, the rapid development of communication technology, more and more communication applications need to support multiple network protocols. The reconfigurable filter is an important part of the reconfigurable RF front-end, the filter passband choice at the same time, but also to meet all types of reconfigurable function. Therefore, the tuning speed, tuning mode, small volume integration high cost, low loss and high reliability of the reconfigurable filter has become a research hotspot. This paper used to adjust the convenient way of varactor diodes and PIN diodes as reconfigurable components, through the research and analysis of reconfigurable loading principle, between the end of the transmission line resonator and the reconfigurable components, calculation and verification and analysis the electromagnetic simulation software using the parity mode, the final design of three different functions of the reconfigurable filter: 1. parity on E dual-mode resonator based on analysis by The introduction of the variode in detail, design a dual band Frequency Reconfigurable bandpass filter. The varactor affects the resonant frequency even mode, by using varactor diodes and the appropriate ratio of the feed mode, to achieve the second passband center frequency range change; when the two passband center the frequency of overlap, can achieve single Shuangtong with switching function, and ensure the two passband constant absolute bandwidth.2. based on multimode resonators, the E dual-mode resonator loaded on open stub form the third mock exam resonator, a wide band bandpass filter, the passband group delay is relatively flat,. With good selectivity. Followed by analysis of the resonant characteristics of the third mock exam resonators, obtained the variation of the three poles, two upper and lower open stub length respectively control the high and low frequency pole position, controlling the length of transmission line in the middle Between the pole position. Then through the transmission line at both ends and open stub end into the varactor diode, design a center frequency constant absolute bandwidth of reconfigurable bandpass filter in.3. two based reconstruction filter design, and finally completed the three three SIR unit by varactor diode coupling and realize the independent reconfigurable bandpass filter with center frequency and bandwidth. Using PIN diode as the RF switch, a path selection by four different impedance and electrical length of the grounding line, complete the center frequency reconfigurable; in one channel, is used to adjust the coupling between the variable capacitance diode resonator, coupling complete bandwidth coefficient, reconfigurable. Three reconfigurable filter are analyzed, discussed and verified, the measured results of the wide adjustable range and easy to control, and to achieve the miniaturization and high stability.

【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN713

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 王才敏;張文梅;;可重構(gòu)振蕩器與雙頻濾波器的協(xié)同設(shè)計(jì)[J];電子技術(shù)應(yīng)用;2010年11期

相關(guān)博士學(xué)位論文 前2條

1 吳小虎;高性能多頻及寬帶濾波器的研究[D];華南理工大學(xué);2013年

2 尉旭波;高性能小型化混合耦合濾波器設(shè)計(jì)與實(shí)現(xiàn)[D];電子科技大學(xué);2012年

相關(guān)碩士學(xué)位論文 前2條

1 楊一飛;DGS技術(shù)在微帶濾波器中的應(yīng)用[D];南京理工大學(xué);2008年

2 丁家峰;PIN二極管的物理機(jī)制、仿真模型及其應(yīng)用研究[D];中南大學(xué);2001年

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本文編號(hào)：1682502