AD9364 IC has 3 differential receiver , RXA_P, RXA_N, RXB_P, RXB_N, RXC_P, RXC_N,
and 2 differential receiver , TXA_P, TXA_N, TXB_P, TXB_N.
I would like to construct 2 x 2 MIMO using RXA_P/N , RXB_P/N ,TXA_P/N ,TXB_P/N ,
Is it possible to implement MIMO using one Frequency ?
Also why AD9364 named RF 1 × 1 transceiver ? i think AD9364 RF 2 × 2 transceiver right ?
No, AD9364 has only one dedicated receive channel. All the receive input ports map to a single receive path.
You will have to use an AD9361 to build a 2x2 system.