FPGA FM Modulator with DDS

This is video I'm describing how to use the DDS (Direct Digital Synthesis) as a frequency modulator by changing the phase increment. The video is presenting the principle of DDS and different tradeoffs A Vivado example can be downloaded as an example and the presentation used in video as well. Quality of video is not great I hope the information will compensate for that.
Enjoy!
design files can downloaded from my Blog page
www.adaptivedesign.ie/blog

[@samjef8131]

perfect. thanks a lot

[@benish0r]

Very informative, I learned a lot. Thank you!

[@adaptivedesign8795]

Glad it was helpful!

[@bob_mosavo]

Thanks 👍

[@adaptivedesign8795]

Welcome 👍

[@manuelsanchez1262]

Hello. So would the adder be the equivalent of the "phase_inc" block you have in your other videos? I am trying to piece the whole radio together (i.e., the final block diagram of the radio) but this doesn't exactly go over the phase_inc block. Instead of audio like you do here, we would be passing in the 16bits from the dc_off_remove block to the adder right? Also, on the phase_inc block, you have two clocks, aclk and dds_clk, why is this?

[@justotalkalottashit8392]

I have a custom ka-band direct digital synthesizer from NASA, that i bought at a surplus sale. Wondering what to do with it as it is missing one part, has these 3 brass colored modules inside of it labeled 75mhz and one is missing.

[@adaptivedesign8795]

I seriously don't know what to say...