Abstract
This presentation focuses on the design and characterization process of an active array demonstrator for the mid-frequency range (i.e., 300 MHz-1000 MHz) of the future Square Kilometre Array (SKA) radio telescope. This demonstrator, called FIDA3 (FG-IGN: Fundacion General Instituto Geografico Nacional — Differential Active Antenna Array), is part of the Spanish contribution to the SKA project. The main advantages provided by this design include the use of a dielectric-free structure and the use of a fully-differential receiver in which differential low-noise amplifiers (LNAs) are directly connected to the balanced tapered-slot antennas (TSAs).
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