基于反熔丝FPGA的波控单元设计  

Design of a beam-steering unit based on antifuse FPGAs

作　　者：肖文光[1,2] 陈之涛[1] XIAO Wenguang;CHEN Zhitao(No.38 Research Institute, China Electronic Technology Group Corporation, Hefei 230088, China;Key Laboratory of Aperture Array and Space Application, Hefei 230088, China)

机构地区：[1]中国电子科技集团公司第38研究所,合肥230088 [2]孔径阵列与空间探测重点实验室,合肥230088

出　　处：《空军预警学院学报》2017年第4期266-269,共4页Journal of Air Force Early Warning Academy

摘　　要：针对数字电路在空间环境中受宇宙射线、单粒子效应影响较大的特点,给出了一种基于反熔丝现场可编程门阵列(FPGA)的星载波控单元设计方案.该方案以反熔丝FPGA芯片A54SX32A为核心,串行方式控制抗辐照RS422接口芯片完成与数管平台波控码的接收和发送,并行方式控制8位总线驱动器完成对8路移相单元波控码的刷新.测试结果表明,在10 MHz测试频率下RS422传输延迟远小于码元周期,接收端信号波形上升沿和下降沿时间均在10ns以内,达到了设计要求.Aiming at the digital circuit significantly affected by cosmic rays and single-event effect in space environment,this paper proposes a design scheme of spaceborne beam-steering unit based on antifuse FPGAs.In the proposed scheme with the antifuse A54SX32A as the core,serial mode is used to control anti-irradiation RS422interface chip to complete the code transceiver between data management platform and beam-steering unit,and then parallel mode is used to control the8-bit bus driver to complete the code refresh of eight phase shift units.The test result shows that the RS422transmission delay is much less than the code element period at10MHz frequency,and that the rising and falling time of the receiver signal is kept within10ns,meeting the design requirements.

关 键 词：反熔丝FPGA 波控单元 RS422接口 抗辐照 

分 类 号：TN952[电子电信—信号与信息处理]