What are different types of RFID?
Each RFID type can be either active (powered), passive (un-powered) or semi-passive (battery-assisted).
- Low-frequency (LF) RFID tags: 30 KHz to 300 KHz.
- High-frequency (HF) RFID tags: 3 to 30 MHz.
- Ultra-high-frequency (UHF) RFID tags: 300 MHz to 3GHz.
- Active, passive and semi-passive RFID tags.
Is RFID a two way communication?
Radio frequency identification (RFID) has been around for a while. RFID is a one-way process. Information is transmitted from an encoded memory chip (known as a “smart tag”) via an antenna to an RFID reader. There are two types of RFID tags: active and passive.
What kind of protocol is used for UHF RFID?
UHF RFID tags use the ISO 18000 air interface protocol. In Class 1 Gen 2 (ISO 18000-6C) equipment, Pulse Interval Encoding (PIE) is used for communications between reader and tags. PIE describes the way the message is encoded. PIE is similar to Morse code, it uses short and long pauses to represent “0” and “1”.
Which is better HF or UHF RFID tags?
Yes → HF would probably work better because it is less vulnerable to interferences from surroundings. However, there are some manufacturers that have designed UHF tags that will work in these environments as well. No → HF and UHF would both work well. 3) Do you need to store more than ~110 bytes of data on your RFID tags?
What’s the difference between RFID and near field communication?
If you follow developments in the tech industry on a semi-regular basis, you’re likely familiar with the terms near-field communication (NFC) and radio frequency identification (RFID). Recently, you may have seen RFID in the news, or you may have been told that your cell phone is an NFC device.
How is the communication between a RFID reader and a tag made?
An RFID system is composed of a tag reader that is the interrogator and a tag that responds. The communication between a tag and a reader is made through a wireless network called “air interface”. With a sequence of commands sent between the two elements, an RFID reader can identify the Electronic Product Code (EPC) of an RFID tag.