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基于抗辐照技术的DDS电路设计与实现

更新时间:2020-10-27 21:34:28 大小:1M 上传用户:zhengdai查看TA发布的资源 标签:dds电路 下载积分:2分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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直接数字频率合成器(DDS)作为关键器件被广泛应用在航空航天领域中。芯片在广阔的宇宙空间中易受到高能辐射粒子的影响,其中单粒子翻转(SEU)效应是一种十分常见的辐射效应,将导致电路功能异常甚至失效,这就要求DDS芯片能有非常强的抗辐照性能。提出一种基于三模冗余结构并具有自纠错功能的寄存器,将其应用在DDS的电路设计中,并将芯片的数字电路部分插入三模冗余结构,利用冗余结构去除掉故障电路对整个DDS芯片功能的影响,使得DDS芯片的抗辐照能力得到有效提升。

Direct digital frequency synthesizer(DDS)is widely used as a key component in the aerospace industry.The chip is susceptible to high-energy radiation particles in a wide space.The single event upset(SEU)effect is a very common radiation effect,which will lead to abnormal or even failure of the circuit.This requires DDS chip to have very strong anti-irradiation properties.A register based on three-mode redundant structure and self-correcting function is proposed,which is applied to the circuit design of DDS,and the digital circuit part of the chip is inserted into the three-mode redundant structure,and the redundant structure is used to remove the fault.The influence of the circuit on the function of the entire DDS chip makes the anti-irradiation capability of the DDS chip effectively improved.

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