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DC component in received signal

Question asked by suranga on Feb 5, 2018
Latest reply on Feb 7, 2018 by suranga



I have modified ad9361-iiostream example so that I could transmit data samples from a file and write received data to another file. I transmit a frame 6 times in a loop and the result I get is attached. My settings are:


frequency- 5 GHz, BW- 20 MHz, sampling rate- 20MSam/s, AGC in fast attack mode.


When I took fft of the first frame received, I noticed a large dc component (figure attached). I know that AD9361 AXI core implements dc correction in receive chain. Is there anyway that I can suppress this dc component?