AFE7070: Frequency Shift modulation

Howard Del Fava1

Prodigy 170 points

Part Number: AFE7070

Sorry for a newbie question:

I want to use an AFE7070 to generate a 4FSK signal.

Can do that by just varying the IQ data? If so, how? If not, how can I?

Thanks

over 4 years ago

0 jim s over 4 years ago

TI__Guru* 91947 points

Howard,

We are looking into this.

Regards,

Jim

0 Yusuf%20Agoro over 4 years ago in reply to jim s

TI__Expert 4880 points

Hey Howard,

Would you plan on using a processor to generate and send the 4FSK sequence to AFE7070, or are you asking if the AFE7070 can perform 4FSK modulation by itself?

Yusuf

0 Howard Del Fava1 over 4 years ago in reply to Yusuf%20Agoro

Prodigy 170 points

I plan to use a microprocessor and send I/Q data over the parallel port

Thanks

0 Yusuf%20Agoro over 4 years ago in reply to Howard Del Fava1

TI__Expert 4880 points

Hey Howard,

To answer your question, yes you can use the AFE7070 to transmit a 4FSK pattern file.

Yusuf

0 Howard Del Fava1 over 4 years ago in reply to Yusuf%20Agoro

Prodigy 170 points

Thanks.

Part 2 of my question was if so, how?

Can you provide an example?

0 Yusuf%20Agoro over 4 years ago in reply to Howard Del Fava1

TI__Expert 4880 points

Howard,

That is a bit beyond the scope of this e2e forum. There are however great resources online that can point you in the right direction. A quick google search led me to the following resources (links posted below). Both give basic overview on 4FSK modulation and how it differs from 2FSK, once you grasp the main concepts you can find other resources that can guide you on how to generate 4FSK pattern files in Matlab. These pattern files can be loaded to the AFE7070 for transmission.

https://www.rfwireless-world.com/Terminology/2FSK-modulation-vs-4FSK-modulation.html

https://www.researchgate.net/publication/321097403_Implementation_of_Digital_Communication_using_Matlab_Graduation_project_for_BSc_degree

If you run into problems or have questions that are specifically related to the AFE7070 please do not hesitate to reach out to us.

Thanks

Yusuf

RF & microwave

RF & microwave forum

AFE7070: Frequency Shift modulation