锁相环辐射加固设计研究
发布时间：2018-10-16 16:12
【摘要】：电子系统的更新速度日新月异，在航空、航天领域的应用也越来越多，电路的辐射加固技术变得更加重要。电子系统中的核心部分时钟发生器电路的辐射效应研究和辐射加固技术也越来越得到人们的关注。时钟发生器作为系统的核心部分，它的不可预计的频率波动和相位偏差，都将导致系统的稳定性和可靠性受到影响。锁相环电路的主要功能是消除时钟延迟、产生特定频率的高频时钟，因此被确认为航空电子系统中对辐射最为敏感的电路之一。 本文采用0.18μm工艺对电荷泵锁相环电路进行设计和加固，并对整体结构进行了验证和加固性能的对比。本文首先对电荷泵锁相环电路的整体结构进行了分析，分别设计了电荷泵锁相环的子模块电路，进而对各个子模块进行了SET敏感性分析，尤其针对压控振荡器模块不同入射能量、不同入射结点和不同入射时间进行了定量的仿真分析。 然后，，本文对设计完成的电荷泵锁相环电路进行了加固设计。鉴频鉴相器电路部分使用了三模冗余技术进行加固；在分析了两种电荷泵模块的基础上，选择电压型电荷泵作为本文的加固方案；压控振荡器部分进行了冗余偏置电路和增加环形振荡器级数的加固设计。加固后整体电路仿真验证结果功能正确，得到了中心频率为1GHz，压控振荡器的增益为1.2GHz/V，频带范围为0.4-1.5GHz的抗辐射锁相环电路。对比了加固前后的性能参数，加固后的电路使最大相位偏移降低了57.254%，压控振荡器输入电压波动降低了60.093%，恢复时间降低了37.826%。最后对加固后的电荷泵锁相环电路进行了版图设计，版图后仿真结果与前仿真相同，中心频率为0.95GHz，压控振荡器的增益为1.0GHz/V，频带范围为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.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN911.8
本文编号：2274922
[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.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN911.8
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