Title :
A microwave exciter for Cs frequency standards based on a sapphire loaded cavity oscillator
Author :
Koga, Y. ; Ohshima, S. ; McNeilage, C. ; Searls, J.H.
Author_Institution :
Nat. Res. Lab. of Metrol., Ibaraki, Japan
Abstract :
A low noise and highly stable microwave exciter system has been built for Cs atomic frequency standards using a tunable Sapphire Loaded Cavity Oscillator (SLCO). This paper discusses the successful implementation of a control system for locking the SLCO to a long-term reference signal and reports an upper limit of the achieved frequency tracking 6×10-15 at τ=1 sec
Keywords :
atomic clocks; caesium; cavity resonators; frequency stability; frequency standards; phase locked oscillators; sapphire; 1 s; Al2O3; Cs; Cs atomic frequency standards; control system; frequency tracking; long-term reference signal; microwave exciter; sapphire loaded cavity oscillator; tunable sapphire loaded cavity oscillator; Atomic clocks; Bridge circuits; Control systems; Frequency; Microwave oscillators; Phase locked loops; Phase noise; Temperature; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Frequency Control Symposium, 1998. Proceedings of the 1998 IEEE International
Conference_Location :
Pasadena, CA
Print_ISBN :
0-7803-4373-5
DOI :
10.1109/FREQ.1998.717880
