A customer of mine is evaluating an AD9364 (along with a Xilinx FPGA-Zynq board) for RF receiver. He notices an instability in the AGC for signal out of band.
Here is below the configuration on Rx1
The input signal is a sinewave at 407MHz @ -5dBm
The spectrum is not stable. Below 2 captures of the same configuration.
Can you explain what could be the problem and is there an adjustment to be done in the AGC configration to improve things.