A Fully-Digital Phased Array for Not-Rotating IFF

Recent developments in the field of radar antennas applications led to great interest in fully digital AESA (Active Electronically Scanned Array) architectures for different applications, from telecommunications to automotive and defense. In the latter field, there are several examples on primary radar but not many on secondary radar. In this paper, a fully digital IFF (Identification Friend or Foe) conformal phased array is shown, with a specific focus on the antenna design, the digital architecture and the antenna system architecture.