【摘要】：電子系統(tǒng)的更新速度日新月異，在航空、航天領(lǐng)域的應(yīng)用也越來越多，電路的輻射加固技術(shù)變得更加重要。電子系統(tǒng)中的核心部分時鐘發(fā)生器電路的輻射效應(yīng)研究和輻射加固技術(shù)也越來越得到人們的關(guān)注。時鐘發(fā)生器作為系統(tǒng)的核心部分，它的不可預(yù)計的頻率波動和相位偏差，都將導(dǎo)致系統(tǒng)的穩(wěn)定性和可靠性受到影響。鎖相環(huán)電路的主要功能是消除時鐘延遲、產(chǎn)生特定頻率的高頻時鐘，因此被確認為航空電子系統(tǒng)中對輻射最為敏感的電路之一。 本文采用0.18μm工藝對電荷泵鎖相環(huán)電路進行設(shè)計和加固，并對整體結(jié)構(gòu)進行了驗證和加固性能的對比。本文首先對電荷泵鎖相環(huán)電路的整體結(jié)構(gòu)進行了分析，分別設(shè)計了電荷泵鎖相環(huán)的子模塊電路，進而對各個子模塊進行了SET敏感性分析，尤其針對壓控振蕩器模塊不同入射能量、不同入射結(jié)點和不同入射時間進行了定量的仿真分析。 然后，，本文對設(shè)計完成的電荷泵鎖相環(huán)電路進行了加固設(shè)計。鑒頻鑒相器電路部分使用了三模冗余技術(shù)進行加固；在分析了兩種電荷泵模塊的基礎(chǔ)上，選擇電壓型電荷泵作為本文的加固方案；壓控振蕩器部分進行了冗余偏置電路和增加環(huán)形振蕩器級數(shù)的加固設(shè)計。加固后整體電路仿真驗證結(jié)果功能正確，得到了中心頻率為1GHz，壓控振蕩器的增益為1.2GHz/V，頻帶范圍為0.4-1.5GHz的抗輻射鎖相環(huán)電路。對比了加固前后的性能參數(shù)，加固后的電路使最大相位偏移降低了57.254%，壓控振蕩器輸入電壓波動降低了60.093%，恢復(fù)時間降低了37.826%。最后對加固后的電荷泵鎖相環(huán)電路進行了版圖設(shè)計，版圖后仿真結(jié)果與前仿真相同，中心頻率為0.95GHz，壓控振蕩器的增益為1.0GHz/V，頻帶范圍為0.5-1.4GHz。
[Abstract]:The updating speed of electronic system is changing with each passing day, and it is more and more applied in aviation and spaceflight field. The radiation strengthening technology of electric circuit becomes more and more important. More and more attention has been paid to the radiation effect of clock generator circuit and radiation reinforcement technology in electronic system. As the core part of the system, the unanticipated frequency fluctuation and phase deviation of the clock generator will affect the stability and reliability of the system. The main function of PLL circuit is to eliminate clock delay and produce high frequency clock at specific frequency, so it is recognized as one of the most radiation-sensitive circuits in avionics. In this paper, the circuit of charge pump phase-locked loop is designed and strengthened by 0.18 渭 m process, and the whole structure is verified and strengthened. In this paper, the whole structure of the charge pump phase-locked loop circuit is analyzed, and the sub-module circuit of the charge pump phase-locked loop is designed, and the sensitivity of each sub-module is analyzed by SET. In particular, quantitative simulation analysis is carried out for different incident energy, different incident node and different incident time of VCO module. Then, the design of the charge pump PLL circuit is designed. Based on the analysis of two charge pump modules, the voltage type charge pump is selected as the reinforcement scheme. In the part of VCO, the redundant bias circuit and the reinforcement of ring oscillator series are designed. The simulation results show that the circuit has a central frequency of 1 GHz, a VCO gain of 1.2 GHz / V and an anti-radiation phase-locked loop in the frequency range of 0.4-1.5GHz. Compared with the performance parameters before and after reinforcement, the circuit reduces the maximum phase shift by 57.254, the voltage controlled oscillator input voltage fluctuation by 60.093, and the recovery time by 37.826. Finally, the layout of the circuit is designed. The simulation results are the same as those before the simulation. The center frequency is 0.95GHz, the gain of VCO is 1.0GHz / V, and the frequency band range is 0.5-1.4GHz.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN911.8

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