There are different types of RFID antennas. It is part essential in the systems, are the hands and feet of an RFID system. They are responsible for sending and receiving data between RFID tags and readers. Most RFID antennas have a uniform, standard design.
The difference between the antennas lies in their functional qualitys according to different factors:
- Frequency range: Each country has rules about what types of frequencies are legal in radio frequency technologies. UHF RFID antennas generally operate in one of three frequency bands: US/FCC 902–928 MHz Other global bands 860–960 MHz.
- Magnification and opening angle: A narrower radio wave can cover less ground but travel farther, and excellent extension results in a more concentrated wave. An antenna with moderate extension power and a giant beam is ideal if multiple tags are nearby.
- Polarization: Linearly polarized antennas only radiate radio frequency energy in a horizontal or vertical direction. Circularly polarized antennas radiate waves in a spherical pattern. Hand out circular antennas by deploying counter-rotating antennas allows for a larger, more productive reading area.
Other variations in antenna type
- Small and large: Antennas vary in size; a larger antenna will provide a greater effective distance. Due to space limitations, large antennas may not be suitable for specific installation sites. It can be better for aesthetic preferences with your RFID access control systems.
- Internal and external: Some aspects of the system can be waterproof and dust-resistant because RF identification is helpful in virtually any environment. You can use antennas only at specific temperatures. Antenna performance degrades or stops completely when moved outside this range.
- Integrated and non-integrated: You get a more compact and portable system when you use integrated devices. It is also easier to operate and more pleasing than two mobile units. However, external antennas offer a more comprehensive range of design and application options for your RFID access control system.