摘要
针对目前导航系统的小型化需求,研制了一种基于SiP技术的导航微系统电路。该微系统电路能实现射频基带一体化,内部集成了低噪声信号放大器、GNSS射频基带芯片、数字选择器、过流锁定保护芯片以及无源器件。采用高导热率氧化铝陶瓷管壳实现了良好的散热,利用双腔结构有效减小了模块的尺寸(仅为26mm×26mm),其面积缩小至原先板卡的26%。对模块进行仿真,其满足设计要求。测试结果表明,该电路能够实现GPS和BD的双模导航,定位精度达到10m,测速精度达到0.2m/s,实现了系统小型化的需求。
Aiming at the miniaturization demands of current navigation systems,a navigation microsystem circuit based on SiP technology is designed.The microsystem circuit can achieve RF baseband integration,and is internally integrated with low noise signal amplifier,GNSS RF baseband chip,channel selector,overcurrent locking protection chip and passive components.High thermal conductivity alumina ceramic shell is used to achieve great heat dissipation,the size of SiP is effectively reduced by using the double cavity structure,the size is only 26mm×26mm,and its area is reduced to 26%of the original board card.The module is simulated to meet the design requirements.The test results show that the circuit can achieve GPS and BD dual-mode navigation,positioning accuracy reaches 10m,speed measurement accuracy reaches 0.2m/s,it can meet the requirements of system miniaturization.
作者
许文运
何劲驰
孙晓冬
杨兵
王皓
XU Wen-yun;HE Jin-chi;SUN Xiao-dong;YANG Bing;WANG Hao(No.58 Research Institute,China Electronics Technology Group Corporation,Wuxi 214026;Wuxi Kalman Navigation Technology Co.,Ltd,Wuxi 214026)
出处
《导航与控制》
2023年第4期99-105,共7页
Navigation and Control
关键词
导航定位
高集成
系统级封装
射频基带
双腔结构
navigation and positioning
high integration
system in package(SiP)
RF baseband
double cavity structure
作者简介
许文运,性别:男,学历:硕士,专业:测试计量技术及仪器,职称:工程师,研究方向:微系统。
