Abstract: An apparatus for processing radio frequency signals, comprising a first phase shifting stage configured to receive an RF signal and to provide n1 many, with n1>=2, phase-shifted portions of the RF signal, and at least a second phase shifting stage configured to receive the n1 many phase-shifted portions of the RF signal and to provide n2 many, with n2>=n1, phase-shifted portions of the RF signal based on the received n1 many phase-shifted portions of the RF signal, wherein a phase shift applied by the second phase shifting stage to the n1 many phase-shifted portions of the RF signal is based on at least one phase shift applied by the first phase shifting stage to the n1 many phase-shifted portions of the RF signal with respect to the RF signal.

Abstract: An array antenna includes a plurality of mechanically separate radiating panels arranged side-by-side, means for applying a shaping to the signals transmitted by the radiating elements of the panels and a device for managing the shaping of the signals, wherein the shaping coefficients correspond to a sum of at least: a shaping coefficient (Wco) making it possible to orient the maximum gain of the antenna in a given direction, and at least the opposite of a shaping coefficient (Wc) making it possible to orient the maximum gain of the antenna in the direction of a side lobe resulting from differences between the radiating panels of the array antenna. The method relates also to the associated transmission/reception method.

Abstract: A process for preparing an algal powder containing a reduced content of proteins, a bioplastic composition formed from such a powder, a process for manufacturing a plastic product obtained from such an algal powder and also the plastic product obtained in this way. Process for preparing an algal powder, especially intended for the manufacture of a plastic product, including the successive steps of: culturing and/or harvesting an algal biomass; reducing by at least 10% the intrinsic amount of proteins of the algae, by weight relative to the weight of proteins of the harvested biomass; drying; and reducing to give powder or granules.

Abstract: A process for preparing an algal powder containing a reduced content of proteins, a bioplastic composition formed from such a powder, a process for manufacturing a plastic product obtained from such an algal powder and also the plastic product obtained in this way. Process for preparing an algal powder, especially intended for the manufacture of a plastic product, including the successive steps of: culturing and/or harvesting an algal biomass; reducing by at least 10% the intrinsic amount of proteins of the algae, by weight relative to the weight of proteins of the harvested biomass; drying; and reducing to give powder or granules.