When I use external LO for ad9361 by receiving , a very high DC Component is found in the receiving data port, and i can't get the correct signal wanted .
The extern LO frequency is 3.6GHz and the power is 2dBm.t When i test the port of RX , i found there is a signal of extern LO and power is -53dBm,I think this is caused by bad isolation between Extern LO port and Rx port . And when i change the RX AGC, the Ampitude of DC is changed too.
So ,is the strong dc component is caused by the extern LO Leakage ? And Can i Sovle the Porblem by DC calibration Funtion ?
Is there a requirement of isolation between extern LO port and RX port for ad9361 working well ?