Precision multi-node microwave frequency dissemination using feed-forward compensation technique

A precise multi-node frequency dissemination scheme for multiple users by feed-forward digital compensation technique is demonstrated. The fractional frequency instabilities of the third-level nodes were measured as 1.79×10<sup>-15</sup>/s (2.61×10<sup>-18</sup>/100s) and 1.45×10<sup>-15</sup>/s (4.58×10<sup>-18</sup>/100s).