  Antenna technology provides the crucial interface between electronic devices
and electromagnetic waves required for wireless communications. This technology
has operated under largely the same general principles for over a century,
resulting in stagnation of advancements in modern times and fundamentally
limiting the extent to which potential applications of wireless communications
may be realized. Herein we propose a novel concept for antenna operation
employing the nonlinear precession dynamics of subatomic spins. An
electromagnetic wave incident on a precessing spin will serve to modulate the
spin frequency of precession. Antennas operating based on a detection of these
spin dynamics are then able to fully characterize the incident wave while
achieving substantial amplifications, higher sensitivities, and smaller form
factors as compared to conventional antennas. A preliminary experimental
implementation of the proposed concept establishes its feasibility and is
already able to demonstrate significant amplification and size benefits.
