Abstract
The purpose of this paper is to present an overview of novel design and integration approaches for improved performance “enhanced-cognition” UHF passive and active radio frequency identification (RFID) tags. Antenna design rules are explained for a variety of applications. A strategy that is currently under development for embedding power sources and integration of sensors and integrated circuits (ICs) on low-cost organic substrates, such as liquid crystal polymer (LCP) and paper, enabling the use of inkjet-printing capability for the UHF frequency band, is discussed in the paper. The proposed technologies could potentially revolutionize RFID tags allowing for integrated sensing capabilities for various applications such as security, military, logistics, automotion, and pharmaceutics.
Highlights
Radio frequency identification (RFID) is a compact wireless technology which does not require line of sight (LoS) to communicate with the reader and allows for simultaneous read/write from multiple tags, as well as an easy remote and selective activation of sensor devices based on their unique IDs [1]
Antenna design rules are explained for a variety of applications while addressing a variety of practical UHF radio frequency identification (RFID) issues
The proposed technologies could potentially enable the low-cost implementation of large-scale ad hoc networks that could potentially offer the capabilities of “ubiquitous sensing” and “cognitive intelligence” for a variety of security, military, logistics, automotive, and pharmaceutical applications
Summary
Radio frequency identification (RFID) is a compact wireless technology which does not require line of sight (LoS) to communicate with the reader and allows for simultaneous read/write from multiple tags, as well as an easy remote and selective activation of sensor devices based on their unique IDs [1]. Due to the increasing demand for automatic identification, RFID could potentially find countless applications in different areas including retail level management, item level tracking, access control, animal tracking, vehicle security, and electronic toll collection [2]. At the same time and driven by several “cognitive-intelligence” applications [3] such as item-level tracking of temperature-sensitive products, pharmaceutical logistics, transport and storage of medical products or biosensing applications, a demand for inexpensive, low-power consumption, and durable wireless nodes with sensing capabilities has increased tremendously. The hereby proposed potential ability to print RFID on organic substrates, such as paper, makes them an inexpensive candidate to create miniaturized wireless RFID/sensor modules at a significantly low cost [5]. A brief outline of novel RFID architectures is presented for the purpose of optimized designs, enhancedrange and capabilities, easy fabrication, and low-cost. Antenna design/matching guidelines, and sensors/power source integration are demonstrated, respectively
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