3dB ±1 Circularly Polarized Ceramic Antenna

The 3dBi Circular Polarized Ceramic Antenna is a compact RFID antenna designed for 915MHz and 866.5MHz frequency applications. Featuring a PCB and ceramic construction, this antenna combines a compact form factor with reliable RF performance for RFID readers and other wireless identification devices.

With a ceramic element measuring 25 × 25 × 4 mm and an overall antenna size of 30 × 30 mm, the antenna is suitable for space-constrained equipment and embedded applications. Its circular polarization helps maintain reliable communication between the reader and RFID tags when tag orientation varies.

The antenna provides a typical gain of 3dBi ±1 dBi, an axial ratio of ≤5 dB, and a 50Ω impedance. Various terminals and SMA connectors are available to accommodate different device and installation requirements.

Designed for operation from -25°C to +75°C, this compact ceramic antenna can be used in RFID readers, access control equipment, asset tracking devices, inventory management systems, and other 860–960 MHz wireless applications.

Technical Specifications：

UHF RFID Readers

The antenna can be integrated into compact UHF RFID readers for applications requiring circular polarization and a small antenna footprint.

RFID Access Control

It can be used in RFID access control equipment to support wireless identification of RFID tags and cards.

Asset Tracking

The compact ceramic antenna is suitable for RFID asset tracking devices where available installation space is limited.

Inventory Management

The antenna can be integrated into RFID equipment used for inventory identification and item-level tracking.

Embedded RFID Devices

Its compact 30 × 30mm design makes it suitable for embedded RFID readers and other space-constrained wireless devices.

UHF Wireless Applications

In addition to RFID, the antenna can be considered for compatible UHF wireless devices operating around the specified frequency bands.