title: A microwave exciter for Cs frequency standards based on a sapphire-loaded cavity oscillator.
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), which works at room temperature. 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 error 6 x 10(-15) at tau = 1 s.
authors.affiliation: National Research Laboratory of Metrology, Tsukuba Ibaraki 305-8563, Japan. koga@nrlm.go.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Koga
authors.forename: C
authors.initials: C
authors.lastname: McNeilage
authors.forename: J H
authors.initials: JH
authors.lastname: Searls
authors.forename: S
authors.initials: S
authors.lastname: Ohshima