As descripted In AD9361 Reference Manual UG-570， the Rx differential input impedance varies over frequency. Then what about the Rx single-ended input impedance? Is it relative to differential input impedance ---- for example, 1/2 of differential impedance, ----- or equal to about 50ohm? We need to know how to make RF single-ended input match for a dimension limited and wideband design. Thank you!