The System Design of 100MHz New Frequency Standard with an Excellent Behavior

The purpose of this paper is to analyze a system which uses a passive quartz resonator as its frequency reference , an assemble system design approach has been proposed which uses both phase-lock and frequency-lock techniques to obtain an optimum transferring of frequency stability of the reference signal by selecting the optimal bandwidth. The phase noise of l00MHz assemble system output can be below -120dB Hz near carrier l0Hz, the corresponding frequency stability for sample time over one second can be finally improved to sigmasub yTau23 10exp 13tau 1s. Theoretical analysis and system design on 5MHz frequency-lock loop and l00MHz phase-lock loop have been proposed in this paper, some experimental results have also been given.