High Accuracy Wireless Time-Frequency Transfer For Distributed Phased Array Beamforming

Wirelessly coordinated distributed arrays will have a significant impact in next generation communications and sensing systems in coming years. However, to achieve high modulation bandwidths and carrier frequencies, timing and frequency transfer must be synchronized to small fractions of the modulation and carrier periods respectively. In this work, we demonstrate coordination and beamforming of a wireless distributed antenna array at 1 GHz in a cluttered outdoor environment achieving a coherent gain of 95.4% and beamforming accuracy of 27.6 ps over a 41 m channel.