recoder <[email protected]> wrote:

> We are used to process 70 Mhz IF by using ADC boards to interface to
>our fpga boards.
>Now we have to process the following signal:
>720 Mhz IF
>qpsk modulated
> 80 mhz bandwith (3 dB)
>
>Can anybody recommend a board to interface the 720 Mhz IF to a FPGA
>board?

You probably don't want a board. You probably want a
connectorized quadrature mixer, and a connectorized local
oscillator, with the mixer output feeding a dual ADC board.

Seek out an RF engineer to specify, assemble, and test this puppy.

Steve