Future 6G antennas are going to literally slide around on your phone to grab a signal so sharp it shouldn't even be possible.
arXiv · March 16, 2026 · 2603.12817
Why it matters
Engineering usually treats antenna interference as a problem to be avoided, but these 'movable antennas' intentionally exploit it to reach a state called 'superdirectivity.' This allows them to beam data with a level of focus and strength that stationary hardware simply cannot match.
From the abstract
Movable antenna (MA) systems have emerged as a promising technology for future wireless communication systems. The movement of antennas gives rise to mutual coupling (MC) effects, which have been previously ignored and can be exploited to enhance the capacity of multiple-input multiple-output (MIMO) systems. To this end, we first model an MA-enabled point-to-point MIMO communication system with MC effects using a circuit-theoretic framework. The capacity maximization problem is then formulated a