Hi Rolando, I suspect Dan may have been referring to the PhRInGES system developed for VLBI at the SMA and CARMA; it's a phased array with two iBOBs that sample four inputs each, coherently sum them, and send the sum to a third iBOB over XAUI links for the final sum (total of 8 inputs). There is also an XF "calibration correlator" implemented on a BEE2 board which receives data from the upstream iBOBs to derive the calibrating delays and phases.
The design is quite complex and uses multiple "black boxes" to speed up compile times. The Simulink model files are currently hosted at Github and I believe the latest version of the code is on Dave MacMahon's branch located here: https://github.com/sma-wideband/phringes/tree/davidm/mssge Note: there is some documentation in the "doc" directory. There is also a poster around somewhere I can dig up for you that describes the system using a block diagram. One thing to keep in mind is that since the iBOB is no longer supported you will need to use an older version of Matlab/Xilinx/mlib-devel/etc. I believe the last version we could use was Xilinx 10.x (might have been 11.x but I can't remember for sure at the moment). Additionally, you will need to use the following version of mlib-devel to compile the design: https://github.com/sma-wideband/mlib_devel/tree/vlbi-devel If you have any questions about the system or need more detail please email myself, Jonathan Weintroub, and Dave MacMahon. You should be able to find their emails on the list or I'll be happy to CC them in a response. Best, Rurik On Sat, Apr 19, 2014 at 9:02 PM, Rolando Paz <[email protected]> wrote: > Hi all. > > Can anyone send me a copy of a design that uses multiple IBOB's? > > Dan suggested me some beamformer where multiple ibobs talking to each other > over XAUI links. > > Best Regards > > Rolando Paz > >
