RBE2
The RBE2 (Radar à Balayage Electronique 2 plans) is a multirole radar developed during the 1990s for the French Dassault Rafale combat aircraft.
While the RBE2 uses a passive electronically scanned array (PESA) the RBE2-AA radar system is an active electronically scanned array (AESA) radar system derived from the Rafale's RBE2 radar. It replaces the mechanically steered array antenna by electronically steering exerted by up to several thousand of transmit-receive modules which enable maximum performance and versatility as well as enhanced reliability. The improved RBE2-AA radar system has been available since 2012 for the Rafale fighters owned by the French Air Force, Navy and export customers.
In April 2002, the French weaponry procurement agency, Délégation Générale pour l'Armement (DGA), awarded Thales a contract to develop an active electronically scanned array (AESA) radar demonstrator based on the RBE2 radar system. The RBE2-AA (active array) variant has been tested on a Mystère 20, a Mirage 2000 testbed aircraft from the Flight Test Center of the DGA and then on a Rafale. While the first tests were made with US-made transmitter-receivers, the current radar features parts manufactured by Thales. The radar uses about 838 GaAs T/R modules.
In July 2004, DGA awarded a 90 million-euro contract for the development of a second active electronically scanned array (AESA) radar demonstrator aimed at fielding this new technology on French Rafales beginning in 2012.