[lucb1e]

Ah, so if I understand it correctly they (motor and phase array) basically each do one axis?

[geerlingguy]

No, the motor basically aligns the satellite for the optimal phased array 'aim' (and can rotate and tilt the dish).

But after an initial aiming, the motors basically lock in place and the dish stays still. The phased array then tracks individual sats in orbit.