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Showing posts with label antena. Show all posts
Showing posts with label antena. Show all posts

Friday, September 25, 2009

What is Radio frequency Idnetification System

Radio Frequency Identification System
Traditionally, radio frequency identification system is made up of coupled inductance circuit and antenna in a transponder or tag, antenna in a receiver, antenna in a reader or interrogator, and data base computer.

Initially, in the manufacture of radio frequency identification microchip, Silicon, 2% by mass added to 0.4% Carbon, is the magnetized and demagnetized steel used in between inductance circuit as information storage. However, the advent of chip-less tags, polymer tags, as well as advances in printing techniques made silicon-less tags. These silent devices are actually the same capable tags that can send to a reader its identity number as well as the identifier number for the material it is attached to. But the so called common sense or brain of the radio frequency identification is in its middleware and backend system called database. It is the middleware that interprets the data read by an interrogator from the tags, and subsequently transmits this to the database for storage.

Radio frequency Idnetification

Effects of Reflection, Diffraction and Refraction on Radio Frequency
The atmospheric environment with which radio frequency waves may be propagated and transmitted presents itself with a variable of impediments. Thus, waves may be reflected, diffracted or refracted depending upon the nature of the barrier, whether it is a conductor, semi-conductor, or non-conductor, and the frequency of the waves.
Radio Frequency Transmission and Reception
Conventionally, radio frequency waves were used as carriers of information depending upon the couplings used to produce specified series of charges acting as codes. These carrier waves may then be intercepted by a receiver in a reader system. The antenna would again vary depending upon the volume of information it is enabled to receive or transmit.

Radio frequency identification commonly known as tags come in a variety of Company tailor-made style with comparable if not as good as features employed in the market. As a tag the transponder is invented with an integrated circuit or IC fixed to a transmitter. This combination is secured in between shield. The set may be contained to a size desired by the consumer. Sometimes it comes in as large as a credit card, and sometimes as small as a fraction of a centimeter.
It is usually the transmitter size, transmission range, and its role in the merchandize that correspondingly determines its dimension.
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