Design and optimization of multielement antennas and RF circuits for beamforming with a reduced number of RF Front-ends

This work describes an overview of antennas and RF circuits concepts developed in XLIM laboratory and LabeX Sigma-Lim to offer an interesting trade-off between performances, energy consumption and overall complexity to address the problematic of beamforming in civil and mass-market applications. 5G and its future evolution is a great driver to develop such solutions. A reconfigurable antenna with a reduced number of RF excitations is presented, as well as RF frontend architecture used for a Ka-band demonstration. A main target of the work is to develop a system level simulation chain to optimize the interfaces between the elements of the antenna and front-ends. To this end, a powerful simulation platform, PREMISS, has been used to study and optimize a full-system.