Near-field

The near-field refers to the region close to an antenna or communication device, typically within a few wavelengths of the transmitted signal. In this zone, electromagnetic fields are complex and behave differently compared to the far-field, allowing for more localized and precise energy transfer. This concept is important in applications like wireless charging, near-field communication (NFC), and certain radar systems, where the close proximity enables specific interactions. Essentially, the near-field is the area where the electromagnetic waves are strongly bound to the source, providing unique opportunities for short-range, efficient communication or energy transfer.