A Metallic Rfid Tag Design for Steel-Bar and Wire-Rod Management Application in the Steel Industry

Abstract

Abstract-In recent years, RFID solutions are finding an increasing number of applications in a wide variety of industries. There are some natural limitations when applying RFID technology in the steel industry, because the tags do not function well in metallic environments. Even though some commercial RFID metal tags are available in the market, they are found to be too expensive by steel companies. This paper proposes a useful and practical RFID tag design for management applications involving steel-bar and wirerod products manufactured by the steel industry. The dual-function metallic RFID tag, comprising of both an RFID code and a barcode, involves technology advancement in RFID design, and named WindowTag (WinTag). The maximum read range of this tag can reach about 5.7 m for the radiated power of 4.0 W EIRP in free space. In the practical application, the maximum read ranges are about 2.3 m and 5.0 m for the worst and best case, respectively. The design methodology as well as simulation and measurement results of the WinTag are presented in this paper. The low profile and low cost features of the WinTag makes the RFID tag well suited for metallic type tag of labeling system that requires integration of RFID technology.

Magnetic Substrate Folded Dipole Antenna for Uhf Rfid Metal Tag

“…The antenna design is modeled and simulated by using the software HFSS. The effect of the geometry of a meander-line antenna on the input impedance was described by Marrocco [14], and the effect of parameters (a, b, c, w, w 1 , w 2 ) were described in detail by Chen et al [2]. The dimensional parameters and a prototype photograph of the magnetic substrate antenna are shown in Fig.…”

“…Much research about metal tag antennas has been reported to solve this problem. The main solutions include inserting a dielectric layer between the antenna pattern and the metal ground or even using special antenna design principles to avoid metal interference [2][3][4][5][6], but their uses are limited by the considerable prices. Recently, a series of novel RFID metal tags are proposed, for instance, tag equipped with Artificial Magnetic Conductor reported by Abu et al [7] and tag equipped with magnetic composite material reported by Kuo et al [8].…”

Analysis of the variability of RSSI values for active RFID-based indoor applications

“…The effect of proximity to metal is frequently reported by researchers. This can cause signal detuning and, thus, can degrade the signal-to-noise ratio for active RFID systems (Chen et al, 2009). Attached materials and obstructions can also contribute to these effects, which reduce read rates and read ranges of RFID systems (Bridelall and Hande, 2010).…”

A Slim Wideband and Conformal Uhf Rfid Tag Antenna Based on U-Shaped Slots for Metallic Objects

“…So, the tag antenna is one of the essential components and plays a key role in the overall RFID system. RFID tags need to be attached to various objects with different shapes and material properties [5,6]. In some practical applications, the tags need to be attached on electrically metallic objects' surface.…”