I received a sine wave signal when I transmitted a sine wave signal with the AD9361 evaluation board,
1R1T, FDD mode, 2.5GHz LO.
The amplify of receive signal decrease when I attenuate the gain(Tx attenuation(0x073), MGC(0x109), and programmable Tx/Rx fir gain), but the signal appear obvious distortion.
The amplify of receive signal increase when I raise the gain, the signal is perfect ignored the amplify.
what is that? what is the problem? why the amplify is wrong?can anyone help me？