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Inductively coupled RFID tags and capacitively coupled RFID tags, namely, they come in two types. RFID tags are intelligent bar codes that can interact with a networked system for tracking every product that has been put in a shopping cart. Also called smart labels, purchases will be made easier when bar codes are replaced by RFID tags. " It is a continuously evolving technology that fundamentally is an automatic identification system that facilitates detection of objects. RFID is an acronym that stands for "radio frequency identification.

But prices range from $2500 to $3000, uHF readers are the costliest, therefore, their prices are also dependent on their ranges. Which are 13.56 MHz and 2.45 GHz, like UHF (ultra high frequency) and HF (high frequency), rFID readers are categorized on the basis of their range. The basic function of an RFID reader is to communicate with an RFID tag by emanating radio waves through its antenna.

Component costs will decrease, as requirement levels increase, also. The cost of UHF readers may go down by the end of 2006 or in 2007 since more and more dealers will invest into this technology, according to a new calculation by a research company, however. Customized components are not available, and third, there is a low quantity in production; second, there is no IC (integrated circuit) integration; first. There are three reasons for these readers being so expensive.

It can be utilized as a reference design and development tool kit. Was introduced by this company, called EMDB408, rFID Demonstration Reader. Which works for 13.56 MHz RFID readers, eM Microelectronic, a new analog front-end IC was launched by Colorado-based company.

And it can be beneficial to the mankind, rFID technology has bright prospects. RFID bands. This particular range includes both the European Union and the U.S. A new antenna from Poynting Antennas was brought for the 860-960 MHz band, also.