As part of the European Defense Agency-funded PICTURE project, we have investigated the potential of integrated photonics for radar systems, targeting a photonics-based architecture for electronically scanned active array antenna systems, including multifunctional signal generation and detection. In this context, we have developed integrated photonic transmit and receive modules with up- and down-conversion capability, powered by a mode-locked laser for frequency reference. Key elements such as narrowband optical bandpass filters are evaluated for different technology platforms (silicon-on-insulator and silicon nitride). Perspectives and lessons learned are presented, based on the evaluation of system performance with IF-to-RF and RF-to-IF conversion efficiencies.
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