RFID Technology F17.pdf - RFID TECHNOLOGY ECE 546 u2013 RF...

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RFID TECHNOLOGY ECE 546 RF Circuit Design Fall 2017 Charles Harris
R F I D T E C H N O L O G Y P a g e | 1 Abstract Radio Frequency Identification (RFID) technology is widely used in modern day technology all around us. This report will introduce RFID technology, explain how it works, provide benefits and issues with RFID technology, and discuss the future of RFID technology. Introduction James Clerk Maxwell is often considered the Father of modern Electromagnetic Theory. Through mathematical considerations, Maxwell hypothesized on electromagnetic wave propagation and the idea that light was a form of electromagnetic energy. Further, all of the practical applications of electromagnetic theory radio, television, radar, cell phones, and wireless networking owe their existence to the theoretical work of Maxwell. [2] RFID is used today a lot more than one may notice. RFID is a method of identifying and tracking items using small electronic devices containing a small data chip and an antenna. [6] RFID is similar to barcodes or magnetic strips in that they provide a unique identifier for the item that holds the RFID chip, however RFID technology has many superior benefits. RFID technology uses Radio Frequency (RF) waves, which are Electromagnetic waves with frequencies lower than 300 GHz and wavelengths greater than 10
R F I D T E C H N O L O G Y P a g e | 2 cm. RF waves have electric and magnetic components which are perpendicular to each other and are the lowest frequency waves categorized on the Electromagnetic Spectrum. [8] RFID Background The foundation of RFID Technology was established in the U.S. in the 1920s, when the radar was developed. In the 1930s, Britain used a similar technology to RFID, an IFF transponder to distinguish enemy aircraft during WWII. RFID was then invented in the 1940s with the redefinition of the Radar. Then in the 1950s RFID technology was explored in laboratories and designs were developed for long range transponder systems for aircraft. Following, in the 1960s, RFID technology use was expanded from the military and Electronic Article Surveillance (EAS) arose. EAS is a cheap and simple technology consisting of 1-bit tags that allow reader systems to detect the presence or absence of tags. Further, EAS was the most popular use of RFID technology throughout history. In the 1970s, applications were further broadened, and RFID efforts were put into electronic toll collection, animal and vehicle tracking, and factory automation. RFID technology was fully implemented in the 1980s and the U.S. and Europe applied this technology to transportation systems, animal tracking, and business applications. In the 1990s RFID became commonplace and standards began to emerge. From here, RFID Technology developed further, improving the technology and decreasing cost.

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