An antenna diversity system pushes one signal through multiple antennas to connect to the target, and may vary several different factors:
- Pattern Diversity uses antennas with different gain: for example, one small omnidirectional antenna for nearby targets and one high-gain parabolic dish with a spotlight-like radiation pattern for distant targets. This is the most common application of these systems in RC.
- Spatial Diversity uses several antennas set some distance apart, which reduces line of sight transmission problems.
- Polarization Diversity uses antennas that are similar, but differently polarized, in order to eliminate the chance for a polarity-related dropout