Time-domain Measurements of Frequency Stability
The frequency stabilitys definition in time domain is briefly introduced and four measurement methods are discussed in this paper, including direct counters, frequency difference multipliers, heterodyne method and dual mixer time difference method. Some detailed calculations on accuracies are given for a better comparison. Whats more, for making precise measurements, an attempt to combine these four methods with the latest TDC and TAC techniques is made, and a block diagram is presented. Finally, we estimate the accuracies of these combinations: direct counters combined with the dual arctangent technique can reach 4E-12/S, frequency difference multipliers with multi-phase clock TDC 2.5E-13/S. When the multi-phase clock TDC technique applied on heterodyne method and dual mixer time difference method, the measurement accuracy respectively can reach 1.25E-16/S and 2.5E-17/S.
Frequency stability direct counters heterodyne difference frequency multipliers dual mixer time difference
Wang Lijuan Yao Zhendong
Chengdu University of Information Technology,Chengdu 610225 China
国际会议
西安
英文
2007-08-16（万方平台首次上网日期，不代表论文的发表时间）