铷原子频标调频电路的研究

STUDY ON THE FREQUENCY MODULATION OF RUBIDIUM ATOM FRENQUENCY STANDARD

分析了影响铷原子频标温度系数的主要因素，指出铷频标的整机温度系数主要取决于调相电路．进而提出了采用数字锁相调频电路代替原调相电路实现对激励信号频率调制的方案，可消除电子线路上的不完善所带给铷频标的温度系数．

First the main factor of influencing rubidium atom frequency standard temperature coefficient was disccussed in the paper.It was pointed out that the whole machine temperature coefficient of rubidium frenquency standard would mainly determine phase modulation electric circuit.On this foundation,the scheme was presented that adopting digit phase locking frequency modulation electric circuit to take the place of origin phase modulation electric circuit in order to stimulate the frequency modulation of signals.Thus it would be eliminats the temperature coefficient caused by electron circuit imperfections.