宇航用小型化超稳晶振(USO)设计与实现

Development of Miniaturized Ultra-stable Oscillator for Aerospace Application

在分析高稳定晶体振荡器(OCXO)工作原理的基础上,提出了一种改善晶体振荡器相位噪声的方法。通过低噪声主振电路设计、高精度控温电路设计及机电一体化设计等措施,设计研制了一种宇航用小型化超稳定晶体振荡器(USO),尺寸为99mm×88mm×55mm。经测试,产品短期频率稳定度为2.11×10-13/1s、3.28×10-13/10s、8.61×10-13/100s(Allan方差),相位噪声为-129.4dBc/Hz@1Hz和-147.0dBc/Hz@10Hz。

Based on the principle of OCXO,a method to reduce the phase noise is proposed.With the low phase noise oscillation circuit design,high precision temperature control circuit design,and mechanical and electrical integration,we develope a miniaturized ultra-stable oscillator(USO)for aerospace application.The size of the USO is 99mm×88mm×55mm.Through tests of the product,the short-term stabilities of the USO have reached 2.11×10-13/1s,3.28×10-13/10s,and 8.61×10-13/100s,and the phase noise are-129.4dBc/Hz@1Hz and-147.0dBc/Hz@10Hz.