本文關鍵詞： 介質振蕩器 串聯(lián)反饋型DRO 并聯(lián)反饋型DRO 推-推型DRO 類推-推型DRO 功分器　出處：《南京理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：微波振蕩器是微波射頻系統(tǒng)中的重要部件,利用介質諧振器(DR)的介質振蕩器(DRO)具有頻率穩(wěn)定度高、相位噪聲低、體積小、成本低等優(yōu)點。本文在推-推(Push-Push)型介質振蕩器的研究基礎上提出用基頻反相輸出二倍頻同相輸出雙頻功分器合成兩路并聯(lián)反饋型DRO輸出信號,同樣是用工作在基波頻率的電路輸出了二倍頻信號,在保證信號質量的前提下大大降低了成本。電路中的振蕩單元是并聯(lián)反饋型DRO,這決定了該振蕩器具有調試簡單,輸出功率高的特點。本文主要工作和成果如下：(1)分析研究了串聯(lián)反饋型DRO、并聯(lián)反饋型DRO和推-推型DRO的設計原理,并在ADS中對電路進行了諧波平衡仿真,仿真結果良好；(2)分析了推-推型DRO的二次諧波輸出功率偏小的原因,提出了將雙頻復數(shù)阻抗匹配應用于介質振蕩器以實現(xiàn)二次諧波輸出功率增強的想法,最后在ADS中做了實驗驗證,結果顯示二次諧波輸出功率增強近7 dB；(3)提出了一種基頻反相輸出二倍頻同相輸出的對稱輸出結構的雙頻功分器。給出了功分器的設計公式和設計步驟,在ADS和HFSS中分別對其進行原理仿真和版圖仿真,實測結果顯示在基頻處輸出端口相位相差179.1°,在二倍頻處輸出端口相位相差1.75°。在推-推型DRO的基礎上提出了類推-推型DRO,對類推-推型DRO進行了實物制作、調試和測試,該DRO輸出K波段信號頻率為19.50125 GHz,功率接近O dBm,相位噪聲性能為-68.48 dBc@10kHz,-95.13 dBc@100kHz。
[Abstract]:Microwave oscillator is an important part in microwave radio frequency system. The dielectric oscillator with DRD) has high frequency stability, low phase noise and small volume. The advantages of low cost are as follows: Push-Push-Push-Push-Push-Push-Push-Push-push. Based on the research of the dielectric oscillator, two parallel feedback DRO output signals are synthesized by using the basic frequency inverse-phase output double frequency in-phase output dual-frequency power divider. The frequency doubling signal is also output by the circuit which works at the fundamental frequency, and the cost is greatly reduced on the premise of guaranteeing the signal quality. The oscillating unit in the circuit is a parallel feedback type DRO. This determines that the oscillator has the characteristics of simple debugging and high output power. The main work and results of this paper are as follows: 1) the series feedback DRO is analyzed and studied. The design principle of parallel feedback type DRO and push-push type DRO is presented. The harmonic balance simulation of the circuit in ADS is carried out, and the simulation results are good. Second harmonic output power of push-push DRO is analyzed, and the idea of applying dual frequency complex impedance matching to dielectric oscillator to enhance the output power of second harmonic is put forward. Finally, the experimental results in ADS show that the output power of the second harmonic is enhanced nearly 7 dB; In this paper, a symmetrical dual-frequency power divider with the symmetrical output structure of inverse-phase output is presented, and the design formula and design steps of the power divider are given. The principle simulation and layout simulation are carried out in ADS and HFSS respectively. The measured results show that the phase difference of output port at the fundamental frequency is 179.1 擄. The phase difference of output port is 1.75 擄at the second harmonic frequency. On the basis of the push-push DRO, the analogies-analogy drop is put forward, and the analog-to-analogy DRO is made, debugged and tested. The DRO output K-band signal frequency is 19.50125 GHz, the power is close to O-dBm, and the phase noise performance is -68.48 dBc@10kHz. -95.13 dBc@ 100kHz.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN752

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相關碩士學位論文 前2條

1 李禧律;11GHz介質振蕩器設計[D];南京郵電大學;2012年

2 趙爍礫;基于取樣鎖相及DRVCO技術的X波段微波頻率源的研究[D];南京理工大學;2013年

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本文編號：1480802