https://www.bcsatellite.net/blog/flat-panel-antennas-state-o...
> "Currently the most popular alternative to Gimbal antennas are Phased Array Antenna flat panel antennas, which are composed of many radiating elements that can be thought of as numerous, tiny, fixed antennas. Each one has a phase shifter which forms beams by shifting the phase of the signal emitted from each of the radiating elements (tiny antennas). This provides a constructive/destructive interference which may be used to steer the beam(s) in a particular direction. This entire process is all electric, so the beam direction can be controlled and pointed instantaneously in any direction. It is able to track the movement of a satellite in the sky, regardless of the movement of the car, boat, airplane, or train."