Vision on phased arrays using meta-surfaces and on the implementation of LO phase shifting based on ILOs

In this talk we will address the application of innovative frequency generation techniques based on large integer frequency multiplication to RF front ends for communication. These techniques allow to generate efficiently many local oscillator signals at mmW and subTHz frequencies from a common, much lower frequency, reference. The properties of the generated signals allow to tackle some of the most constraining requirements for communication requiring phase coherence and precise synchronization between the multiple RF signals such as distributed MIMO, beam forming and channel aggregation multichannel transceivers, and MIMO radar systems. Several examples including high-data rate point to point link transceivers and FMCW radars recently developed at CEA-Leti based on these novel frequency generation techniques will be presented.