The 3 dBi Ultra-Thin Circularly Polarized UHF RFID Antenna is designed for UHF RFID applications where compact size and low-profile installation are important. Operating across the 902–928 MHz frequency range, this antenna provides 3 dBi gain and circular polarization for reliable RFID tag identification across different tag orientations.
With an ultra-thin profile of only 1 mm, the antenna measures 250 × 110 mm and can be integrated into space-constrained RFID equipment, cabinets, counters, portals, and other indoor or embedded installations. Its 50 Ω impedance, SMA female connector, and VSWR of ≤1.5 make it suitable for integration with compatible UHF RFID readers and systems.
Applications
The ultra-thin form factor makes this circularly polarized RFID antenna suitable for applications where installation space is limited or where a discreet antenna design is preferred.
Typical applications include:
- UHF RFID access control
- Inventory identification
- Warehouse and logistics systems
- Retail RFID systems
- Asset tracking
- RFID cabinets and storage systems
- Embedded RFID equipment
- Counter and tabletop RFID applications
- Indoor RFID identification systems
- Custom RFID reader installations
Technical Specifications:
| Electrical Specifications |
| Frequency Range |
902–928 MHz |
| Gain |
3 dBi |
| Polarization |
Circular Polarization |
| Beamwidth |
Horizontal: 110° / Vertical: 55° |
| VSWR |
≤1.5 |
| Front-to-Back Ratio |
≥20 dB |
| Impedance |
50 Ω |
| Maximum Input Power |
50 W |
| Lightning Protection |
DC Ground |
| Connector Type |
SMA Female |
| Mechanical Specifications |
| Antenna Dimensions |
250 × 110 × 1 mm |
| Net Weight |
0.2 kg |
| Gross Weight |
0.5 kg |
| Material |
PCB |
| Color |
Black |
| Operating Temperature |
-40°C to +70°C |
Why Choose an Ultra-Thin RFID Antenna?
Traditional RFID antennas may require additional installation space, which can be difficult to accommodate in compact equipment or embedded systems. An ultra-thin antenna can help simplify integration where available space is limited.
The circularly polarized design is particularly useful for RFID environments where tags may not always maintain the same orientation relative to the antenna. Combined with a 3 dBi gain and 110° horizontal beamwidth, this antenna provides a practical option for short- to medium-range UHF RFID identification applications.
Installation and Integration
The antenna uses a standard 50 Ω RF interface with an SMA female connector. Before installation, confirm that the RFID reader, operating frequency, connector configuration, and RF power settings are compatible with the antenna specifications.
For best results, antenna placement should take into account the installation environment, nearby metal surfaces, tag orientation, reader output power, and surrounding RF interference.
