RFID Antennas are devices that convert the signal from an RFID reader into RF waves detectable by RFID tags. Without RFID antennas, an RFID reader cannot properly transmit signals to tags or receive data, making antennas essential for any RFID project. RFID antennas can be categorized to help you choose the appropriate type for your project, just like RFID tags and readers. Common types include linear RFID antennas, circular RFID antennas, indoor RFID antennas, and outdoor RFID antennas. Close-range or high-density RFID antennas can also be added depending on your project needs.
Ant370 – 9 dBi UHF Circular Antenna SMA Connector PCB
The Ant370 – 9 dBi UHF Circular Antenna SMA Connector PCB is used in industries such as textiles, retail, apparel, asset tracking, personnel tracking, warehousing, logistics, and monitoring of challenging materials and objects.
ANT384 9 dBi UHF Circular RFID Antenna – Specifications
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Frequency Range: 865–868 MHz
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Maximum Read Distance: Up to 8.5 meters with compatible tags and readers
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Connector: N-type female
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Dimensions: 260 × 260 × 30 mm
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Operating Temperature: –40 °C to +85 °C
| Feature |
Description |
| Operating Frequency |
865–868 MHz |
| Maximum Read Distance |
8.5 m |
| Dimensions |
260 × 260 × 30 mm |
| Operating Temperature |
–40 °C to +85 °C |
Blog Overview
RFID antennas are a critical component of any RFID system, serving as the primary means of communication between an RFID reader and an RFID tag. An RFID system consists of a reader, an antenna, and a tag.
The antenna determines the system’s range and accuracy. It emits radio waves that penetrate the RFID tag and retrieve the information stored on it. The antenna then sends this data to the reader, which processes it and forwards it for further analysis.
RFID antennas come in various types, including linear, circular, indoor, and outdoor models. The type used depends on the specific application and environment.
Circular RFID Antennas
Circular antennas are shaped to provide omnidirectional coverage, allowing tags to be read from any orientation. This makes them highly versatile in applications where tags may be positioned differently. Circular antennas are typically compact and lightweight, facilitating easy integration into various RFID systems.
The read range of a circular antenna depends on its size, operating frequency, and potential obstacles that may attenuate or block the radio signal. Circular antennas are commonly used due to their flexibility, small footprint, and ability to handle multi-directional tag placements effectively.