PON Upgrade of the Sardinia radio Telescope
Scientific Research Lines
Technological Research Lines
Job Opportunities
Publications and Internal Reports
Facilities
PROECTS
Visiting Researchers
Seminars at OAC
Administration
SRT Inaugural Ceremony
Technological Research Lines
RFI Monitoring
The fixed RF station
Basically, the fixed stations operating at the SRT can be divided in four main components:
-
Antennas: mainly log periodic dipole arrays (LPDA), optimized Yagis, dual-ridge horns. All of them are placed on top of a tower: they can rotate in azimuth and change linear polarization (or are simply tilted by 45 degrees).
-
Front-end boxes installed immediately below the antennas: they utilize commercial active and passive microwave components for filtering, switching and pre-amplifying the incoming signals. All electrical specifications are selected after a detailed study of their tradeoffs for sensitivity, robustness, and bandwidths.
-
Back-ends: we mainly use spectrum analyzers for the data acquisition and telecommunications receivers and displays for the identification of the interferers. We currently utilize only coaxial cables to feed the back-ends, but we have also plans to substitute them with optical fibers.
-
Control system: a PC, various interface cards, rotor and front-end controllers, and software programs take supervision of the whole system.