5dBi UHF RFID PCB Antenna

An RFID antenna transmits and receives radio frequency signals between an RFID reader and RFID tags. It enables the reader to communicate with tags and retrieve their stored identification data. In a typical RFID system, the antenna works with the reader, tags, and software to support functions such as inventory tracking, asset identification, and access control. Antenna selection affects the reading area, communication performance, and reliability of the overall RFID system.

Circularly polarized RFID antennas are useful when tag orientations vary or cannot be controlled, while linearly polarized antennas generally perform best when tag and antenna polarization are properly aligned. Circular polarization can help improve the likelihood of detecting tags at different orientations, although actual performance depends on the tag, antenna placement, and RF environment. For outdoor inventory tracking and access control, circular polarization can be a practical choice when items pass through the reading area in different positions.

The APRIA869605CA has a 120° horizontal beamwidth and a 120° vertical beamwidth, providing broad coverage across both planes. This pattern can help cover a wider reading area in applications such as smart retail, asset management, and filing cabinet management, depending on antenna placement.

The APRIA869605CA measures 120 × 120 × 8 mm and uses a PCB-based construction. Its compact, slim profile can help integrate RFID coverage into equipment with limited installation space.

The APRIA869605CA operates across 860–960 MHz and uses an SMA-Female connector. It has a 50 Ω impedance and a VSWR of ≤1.4, helping designers check compatibility with the RFID reader and RF cable.

Antenna polarization affects how efficiently radio waves couple between the antenna and RFID tag. Circular polarization can accommodate different tag orientations, while vertical polarization generally works best when tag alignment matches the antenna’s polarization. The APRIA869605CA’s final polarization should be confirmed because the supplied product information lists both types.