Space time clock:An on-chip clock with 10^(-12) instability

作     者：Zhendong XU Yingchun ZHANG Pengfei LI Yongsheng WANG Limin DONG Guodong XU Zhendong XU;Yingchun ZHANG;Pengfei LI;Yongsheng WANG;Limin DONG;Guodong XU

作者机构：School of AstronauticsHarbin Institute of TechnologyHarbin 150001China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2022年第35卷第10期

页      面：247-253页

核心收录：

学科分类：08[工学] 081105[工学-导航、制导与控制] 0811[工学-控制科学与工程] 

基　　金：National Natural Science Foundation of China(No.11973021) Harbin Institute of Technology,Research Centre of Satellite Technology and Department of Microelectronics Science and Technology supported by the ASRTU satellite project 

主　　题：Communication Embedded processor Instability Positioning navigation and timing Space time clock 

摘      要：High precision and stable clock is extremely important in communication and *** miniaturization of the clocks is considered to be the trend to satisfy the demand for5G and the next generation *** on the concept of meter bar and the principle of the constancy of light velocity,we designed a micro clock,Space Time Clock(STC),with the size smaller than 1 mm×1 mm and the power dissipation less than 2 m *** in integrated circuit of 0.18μm technology,the instability of STC is assessed to be 2.23×10^(-12)and the trend of the instability is reversely proportional toτ.With the potential ability to reach the level of 10instability on chip in the future,the period of the STC’s signal is locked on the delay time defined by the meter bar which keeps the time reference *** of its superior performance,the STC is more suitable for mobile communication,PNT(Positioning,Navigation and Timing),embedded processor and deep space application,and becomes the main payload of the ASRTU satellite scheduled to launch next year and investigate in space environment.