RFID Reader Architectures and Applications

Radio frequency identification, or RFID, is a generic term for technologies that use radio waves to automatically identify people or objects. The purpose of an RFID system is to obtain data programmed in devices, which is then read by an RFID reader and processed for the particular application. The data can provide identification or location information about the product, such as date of purchase or price.

RFID consists of three basic components: A transponder (tag), an interrogator (reader) and an antenna. RFID has a number of standards such as The International Organization for Standardization (ISO), in conjunction with the International Electro-technical Vommission (IEC), Electronic Product Code (EPC) global and the European Telecommunications Standard Institute (ETSI). Moreover, RFID follows some standard frequency ranges that are low frequency (120 to 135 KHz), high frequency (10 to 15 MHz), ultra high frequency (UHF) (850 to 950 MHz) and microwave frequency (2.45 GHz).