Particularly controversial are the biophysical mechanisms by which these RF fields may affect biological systems.

The reader generates an RF field will "poll" to find other nearby devices.

The interrogator must be close for RF field to be strong enough to transfer sufficient power to the tag.

At the same time, the much more massive ions move relatively little in response to the RF electric field.

These electrons can then be accelerated by the RF fields and impact with the same or another surface.

Often, an RF electric field is normal to the surface.

The beam is exposed to an RF field at or near the transition.

The beam then passes through a space before it is again exposed to the RF field.

A device deactivates its RF field while it is waiting for data.

Gradients in the RF field rather than the static field.