Title :
ASKAP photonic requirements
Author_Institution :
ASKAP Signal and Data Transport IPT, Australia Telescope National Facility, Commonwealth Scientific Industrial Research Organisation, Australia
fDate :
Sept. 9 2008-Oct. 3 2008
Abstract :
The Australian Square Kilometre Array Pathfinder project will be a radio astronomy synthesis array covering the frequency range 700MHz - 1800 MHz comprised of at least thirty 12 m diameter parabolic reflector antennas located in the remote radio quiet desert Midwest region of Western Australia. This paper looks at the architectural requirements for such a system and the role of cost effective photonics solutions required to transport signals within each antenna, intra-array and to the outside world. Photonics solutions include RF over fibre, short-haul and long-haul wavelength division multiplexed (WDM) point to point digital links. A key enabling technology for ASKAP is the formation of multiple beams within the primary field of view (FOV) of the antenna using broadband focal plane array (FPA) feed techniques. At present this is in the experimental phase of development.
Keywords :
UHF antennas; antenna arrays; focal planes; microwave photonics; multibeam antennas; radio-over-fibre; radioastronomy; radiotelescopes; reflector antenna feeds; wavelength division multiplexing; ASKAP; Australian Square Kilometre Array Pathfinder project; FPA feed techniques; RF-over-fibre; broadband focal plane array feed; frequency 700 MHz to 1800 MHz; long-haul WDM; multiple beam formation; parabolic reflector antennas; point-to-point digital links; primary antenna field-of-view; radio astronomy synthesis array; short-haul wavelength division multiplexing; size 12 m; Antenna arrays; Antenna feeds; Australia; Broadband antennas; Costs; Frequency synthesizers; Radio astronomy; Radio frequency; Reflector antennas; Wavelength division multiplexing; ASKAP and the KSA;
Conference_Titel :
Microwave photonics, 2008. jointly held with the 2008 asia-pacific microwave photonics conference. mwp/apmp 2008. international topical meeting on
Conference_Location :
Gold Coast, Qld
Print_ISBN :
978-1-4244-2168-8
Electronic_ISBN :
978-1-4244-2169-5
DOI :
10.1109/MWP.2008.4666635
