Nançay radio astronomy station teams are involved in several aspects of the Research and Development (R&D)
for radio astronomy detectors and systems:
i) Microelectronics: Low Noise Amplifiers (LNA), receiver on chip and
system in package. The long-term goal is to provide sub-systems for
the future Square Kilometer Array and its Pathfinders. A beamformer chip has been integrated
in the FP6 SKADS dense aperture array technology demonstrator EMBRACE. Wide band SiGe LNAs are
developed, beamformers with in-chip control are studied and more
complex integrated receivers are designed for the european Aperture Array
Verification Programme demonstrator.
ii) Digital signal processing: EMBRACE beamforming has been implemented
in the digital backend and RFI-mitigation oriented
signal processing has been designed for realtime systems,
including work for FP6 SKADS and FP7 PrepSKA.
iii) A study of Phased Array Feeds has started in 2008, in order to study
the radio electric properties of PAFs at the focus of large F/D
telescopes, such as the Nançay Radio Telescope, as well as to test PAF
systems in collaboration with the SPP/IRFU and LAL/IN2P3 laboratories.