IF board for fpga?

Dear All,
 We have implemented a high speed qpsk demodulator in a FPGA
demodulator board.
Until now we fed the I and Q inputs from another board by wire.
Now we are looking for an IF board that can take a 70 Mhz RF signal
and output the I and Q signals to be fed to our FPGA board.
Can anybody recommend one?
Thanx in advance

On Jun 10, 11:44&#4294967295;am, recoder <kurtulmeh...@gmail.com> wrote:
> Dear All,
> &#4294967295;We have implemented a high speed qpsk demodulator in a FPGA
> demodulator board.
> Until now we fed the I and Q inputs from another board by wire.
> Now we are looking for an IF board that can take a 70 Mhz RF signal
> and output the I and Q signals to be fed to our FPGA board.
> Can anybody recommend one?
> Thanx in advance

Have you looked at Sundance boards?
I did not try them yet but I found them when looking for the same
thing.
It will not be cheap but it's on the shelf (let's hope).

Regards,
Moti

"recoder" <kurtulmehtap@gmail.com> wrote in message 
news:002ad0a8-0cbf-42d3-ab66-40ec0d72b307@x5g2000yqk.googlegroups.com...
> We have implemented a high speed qpsk demodulator in a FPGA
> demodulator board.
> Until now we fed the I and Q inputs from another board by wire.
> Now we are looking for an IF board that can take a 70 Mhz RF signal
> and output the I and Q signals to be fed to our FPGA board.
> Can anybody recommend one?
> Thanx in advance

There are several vendors of ADC+FPGA boards out there with a variety of 
form factors. They primarily target the military and other specialty signal 
processing markets, so they aren't generally cheap ($10k and up). Our 
company has had good results with boards from ICS, Ltd. (now part of GE 
Fanuc) and Pentek. I think Transtech has a family of FPGA boards with a 
variety of daughter cards for I/O and ADC. Depending on your host platform, 
a PCI, PMC, or PCI-Express board may be a good choice. Many of these support 
multiple channels of ~200 MHz ADC's (what you need for 70 MHz RF unless you 
want to deal with balancing quadrature sampling) feeding something like a V4 
or V5 FPGA (significant part of the $$$). I wouldn't recommend rolling your 
own interface board as getting the signal timing on all those ADC bits is a 
bit tricky. That's why we tend to buy boards that have the ADC and FPGA 
integrated together.

-Marty

Moti Litochevski <motilito@gmail.com> wrote in news:4498adf2-c6b8-4d8c-a54a-
946dc779e3c3@f16g2000vbf.googlegroups.com:

> On Jun 10, 11:44&#4294967295;am, recoder <kurtulmeh...@gmail.com> wrote:
>> Dear All,
>> &#4294967295;We have implemented a high speed qpsk demodulator in a FPGA
>> demodulator board.
>> Until now we fed the I and Q inputs from another board by wire.
>> Now we are looking for an IF board that can take a 70 Mhz RF signal
>> and output the I and Q signals to be fed to our FPGA board.
>> Can anybody recommend one?
>> Thanx in advance
> 
> Have you looked at Sundance boards?
> I did not try them yet but I found them when looking for the same
> thing.
> It will not be cheap but it's on the shelf (let's hope).
> 
> Regards,
> Moti

You might take a look at our dspblo a9238 or a9248. These are I & Q boards 
that work with our dspblok 21369+fpga boards. Here is a link:

http://www.danvillesignal.com/dspblok/dspblok-a9238-analog-devices-ad9238-hi-
speed-adc-i/o-board.html

(My newsreader won't let me have enough lines to remove the wrap)

Al Clark
Danville Signal

On Jun 10, 9:44&#4294967295;am, recoder <kurtulmeh...@gmail.com> wrote:
> Dear All,
> &#4294967295;We have implemented a high speed qpsk demodulator in a FPGA
> demodulator board.
> Until now we fed the I and Q inputs from another board by wire.
> Now we are looking for an IF board that can take a 70 Mhz RF signal
> and output the I and Q signals to be fed to our FPGA board.
> Can anybody recommend one?
> Thanx in advance

Have a look at the following hardware that would fit your specs:
- DAQ I/Q data acquisition mezzanine card :
http://www.sundance.com/web/files/productpage.asp?STRFilter=SMT350
- FPGA processing board : http://www.sundance.com/web/files/productpage.asp?STRFilter=SMT900
Note: Other form factors are available depending on your need.

Thank you.

On 10 Jun., 10:44, recoder <kurtulmeh...@gmail.com> wrote:
> Dear All,
> &#4294967295;We have implemented a high speed qpsk demodulator in a FPGA
> demodulator board.
> Until now we fed the I and Q inputs from another board by wire.
> Now we are looking for an IF board that can take a 70 Mhz RF signal
> and output the I and Q signals to be fed to our FPGA board.
> Can anybody recommend one?
> Thanx in advance

We will have a Virtex-5 PCIe boards with a 4 channel 10 Bit ADC
with up to 5 Gsps soon:
http://cronologic.de/products/

Kolaj Sulimma

Kolja <ksulimma@googlemail.com> wrote in news:02857ee3-ab27-4bb9-835e-
01eb0518f323@j14g2000vbp.googlegroups.com:

> On 10 Jun., 10:44, recoder <kurtulmeh...@gmail.com> wrote:
>> Dear All,
>> &#4294967295;We have implemented a high speed qpsk demodulator in a FPGA
>> demodulator board.
>> Until now we fed the I and Q inputs from another board by wire.
>> Now we are looking for an IF board that can take a 70 Mhz RF signal
>> and output the I and Q signals to be fed to our FPGA board.
>> Can anybody recommend one?
>> Thanx in advance
> 
> 
> Kolaj Sulimma
> 

We have a board like this based on either ADI AD9238 or ad9248. It interfaces 
with a ADSP-21369 SHARC and Cyclone III combo

http://www.danvillesignal.com/dspblok/dspblok-a9238-analog-devices-ad9238-hi-
speed-adc-i/o-board.html

Al Clark
Danville Signal