UHF Near-Field RFID Antenna – 400x200mm

A UHF near-field RFID antenna is designed to provide RFID reading and writing within a localized area at close range. It uses near-field electromagnetic coupling to communicate with compatible UHF RFID tags, making it suitable for applications where items need to be identified individually within a defined reading zone. Common applications include item-level inventory, retail product identification, document tracking, and small-item management.

The main difference is how they communicate with RFID tags and how the reading area is designed. Near-field RFID antennas use near-field coupling and are generally suited to close-range identification within a localized area. Far-field RFID antennas rely on radiated electromagnetic waves and are commonly used when tags need to be read over a wider area or at greater distances. The right choice depends on the required reading distance, tag placement, item spacing, and application environment.

The correct frequency version depends on your RFID reader, tags, and installation location. Confirm frequency compatibility and check local regulations before selecting the antenna.

Its rectangular 400 × 200 mm form factor may be suitable for installations where the available mounting space is elongated. Check the antenna’s orientation, required reading zone, and surrounding materials to determine whether it fits your application.

These values describe the antenna’s angular radiation pattern in the horizontal and vertical directions. They help characterize its coverage, but the actual RFID reading area also depends on tag characteristics, reader settings, antenna orientation, and the installation environment.

The front-to-back ratio compares radiation in the antenna’s forward direction with radiation in the opposite direction. A ratio of at least 14 dB indicates stronger forward radiation relative to the rear, which can help when planning antenna placement and managing rearward coverage.