harware of Labview FPGA and DDS

hi to all

i have to implement a system which can generate single frequencies from 20MHz to 3GHz.
i have to use DDS with labview FPGA. i am searching all over about how to use DDS and FPGA (Labview FPGA).

i came to know that i have to use multiple DDS to do this. but i am confuss about the interface that how the hardware would be connected.


i want help from you guyz...