Part Number:AFE031
Tool/software: Code Composer Studio
Dear colleagues,
I have some questions as follows.
1. I use AFE031 Module V2 and F28379D to send and recieve OFDM signal. I found that the phase of the subcarrier will change and the degree of change is related to the frequency of the subcarrier. Is this because of AFE031 or the external passive 4th order bandpass filter or other component?
2.I tried to send a set of data continuously (Fs = 200KHz). I found that the signal was good when I was observing one set (screenshot 1, M = 500us). But if I lengthen the timeline, I have found that the amplitude of the signal will change for a long time (screenshot 2, M = 10ms). How can I avoid this?
3. In the future, I would like to use cables to send data. Therefore, the coupling transformer need to be selected and I found that Turns Ratio satisfies the equation in the following screenshot . Is there any specific data for the maximum voltage and current output of the PA in the formula?
Best regards,
Hao