RFID (Radio Frequency Identification) is an electronic tagging technology that uses radio waves. This technology is based on small devices called tags or labels, which serve as identification means. They can be attached to equipment or people for quick and easy identification, wirelessly, anywhere possible, such as building entrances, offices, hospitals, industrial plants, and more.
Automatic identification is performed by the user passing the tag over the reader device. These tags store information that can be identified or read by a suitable device wirelessly, using built-in radio waves.
Different Technology Methods:
- Passive Tags: These tags have no independent power source and therefore do not transmit at all. They are simply a simple electronic circuit. These tags are activated only when the tag enters an electromagnetic field that can read or identify it by electromagnetic induction.
- Active Tags: These tags have an internal power source, such as a battery, and also contain a transmitter unit that generates a frequency that can be used to transmit frequencies to the reader even without the magnetic induction mechanism transmitted from the tag reader. Active tags typically have a longer range and memory than passive tags, and they also have the ability to store information transmitted from the reader device.
- Semi-Passive Tags: As their name implies, these tags are not fully active and not fully passive. The difference is the smaller battery they have, which allows the tag to be continuously charged, and this tag communicates with the reader device using energy from the electromagnetic field induction.
Frequencies, Ranges, and Chip Types in RFID Technology:
It is impossible to answer the question of what RFID technology is without going into higher resolution and describing the actual ranges, frequencies, and chip types that exist in this technology.
In general, the tag frequencies used in the market today can be divided into 4 categories:
- Low Frequency (LF) Tags: 125KHz
- High Frequency (HF) Tags: 13.56MHz
- Ultra High Frequency (UHF) Tags with ranges between 800 and 960 MHz
- Microwave Frequency Tags reaching 2.4GHz and even higher
It is important to know: Each country and region uses different frequencies, so if you purchased a device/reader abroad, it is not at all certain that it will work properly in Israel or any other country where the frequencies are different from those of the device you purchased.
RFID Tag Read Ranges:
Here too, it is customary to divide the frequency ranges into categories:
- Low Frequency – Provides a read range of up to 30 centimeters
- High Frequency – Provides a read range of up to one meter
- Ultra High Frequency – Provides a read range of between 3 and 12 meters
- The read range of active tags typically reaches up to 100 meters.
There are also two types of chips: Read-only chips and read/write chips.
For more information and details about RFID technology, prices, and more, please feel free to contact us or leave your details and we will be happy to get back to you as soon as possible.
