Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.mrao.cam.ac.uk/projects/aavp/posters/Perini_Planned_research_activities_at_IRA_on_RoF_solutions_for_AAlo.pdf Дата изменения: Tue Dec 7 02:43:34 2010 Дата индексирования: Tue Oct 2 17:51:25 2012 Кодировка: Поисковые слова: дендрохронология

Planned research activities at IRA on RoF solutions for AAlo
Federico Perini1, Jader Monari1, Pierluigi Debernardi
1

2

INAF-IRA (I), 2 IEIIT-CNR (I)

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In the INAF AAlo design the antenna signals are sent to a local processing node (called digital station) through analogue optical links

General link specifications: Frequency band: 70-450MHz Max link length: 500mt SFDR=50dB RIN=107dB/Hz2/3

Ultra low cost and low power consumption devices are required due to the huge amount of antennas and receivers

Several examples of RoF links based on VCSEL devices reported in literature have specifications close to the requested.

Collaboration IRA/INAF - IEIIT-CNR
Pierluigi Debernardi VCSEL designer Circuit level Device Technology level

Device under investigation: 850nm (single and multi mode) 1300nm (single mode) Optical fibre under investigation: multimode (62.5um, OM3 50um) and standard single mode

Possible useful test beds:
BEST-2
16MHz@408MHz DFB 1310nm 9/125 loose fibre cable link length: 200mt AAlo link prototype

BEST Receiver and Back End
er ow lp ota T

BEST-3lo

120-240MHz DFB 1310nm 9/125 loose fibre cable link length: 300mt AAlo link prototype

AAlo with insta me a

links prototypes could be compared proven DFB link technology already lled and working on the antennas by ns of real astronomical observations

Cor rela tion