RFID Tag Antennas Mountable on Metallic Platforms

Yu, Byunggil; Harackiewicz, Frances J.; Lee, Byungje

doi:10.5772/7977

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…Another research analyzes changes in properties and electrical parameters of an UHF passive RFID tag when moving closer to a metal surface [18]. The research proposes special antenna designs for RFID applications over conducting objects.…”

Section: Related Workmentioning

confidence: 99%

A Novel Multivariable Algorithm for Detecting and Tracing Metal Mobile Objects Employing a Simple RFID Setup

Navarro

Vélez

Schettini

et al. 2015

International Journal of Distributed Sensor Networks

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Radio Frequency Identification (RFID) is a solution for automated inventory and object detection applications. However, if RFID tags are attached to metal objects, detection errors may occur due to Foucault currents and interferences caused by multiple simultaneous reflections. Errors may increase if metal objects are moving. The paper presents a novel algorithm using RFID lowlevel reader variables, such as RSSI (Received Signal Strength Indicator), phase angle, and Doppler shift, to detect and trace metal objects. The algorithm was designed to identify if a tag is static or moving and, in the latter case, to compute its speed and direction. The algorithm differs from previous approaches since it uses a simple setup with one commercial portal reader coupled with one single element antenna. Experiments employed one tag located on one metal moving object and 12 static interferer tags, in both outdoor and indoor locations. Results show that the algorithm identifies static tags with no errors. For moving tags, the algorithm shows a maximum 12% error. The algorithm correctly estimates direction and computes object speed. Test conditions emulate fork lift speeds when carrying objects in an industrial warehouse.

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Section: Related Workmentioning

confidence: 99%

A Novel Multivariable Algorithm for Detecting and Tracing Metal Mobile Objects Employing a Simple RFID Setup

Navarro

Vélez

Schettini

et al. 2015

International Journal of Distributed Sensor Networks

View full text Add to dashboard Cite

show abstract

A dual band dual antenna with read range enhancement for UHF RFID tags

Bhaskar

Singh

2019

Int J RF Microw Comput Aided Eng

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This article presents a novel dual antenna structure for dual ultra high frequency bands (f 1 = 866 MHz and f 2 = 915 MHz) for radio frequency identification tags. The proposed structure consists of two dual band antennas, one acting as a receiving antenna and the other as a backscattering antenna at both the frequency bands. The receiving antenna is designed to have input impedance complex conjugate to the impedance of tag IC in order to maximize power transfer between the antenna and the microchip. The backscattered antenna is designed to have real-valued input impedance at both the operating frequency bands to obtain maximum differential radar cross section leading to read range enhancement. The dual band receiving antenna is designed by embedding a pair of thin slits at a radiating edge of inset fed microstrip antenna. The backscattering antenna is comprised of two elements, one is a comb-shaped open ring element, and the other is a meander line structure which is within the open ring element. Compared to conventional antennas, the proposed dual antenna structure provides a read range enhancement due to improved maximum differential RCS. The proposed dual antenna produced 4.3 m and 6.8 m read range at 866 MHz and 915 MHz, respectively. K E Y W O R D S dual antenna, RCS, read range, UHF RFID.

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Passive RFID tags for Metallic Environments Using Phased Array Reader Antennas

Patel

Zawodniok

2019

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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RFID Tag Antennas Mountable on Metallic Platforms

Cited by 5 publications

References 6 publications

A Novel Multivariable Algorithm for Detecting and Tracing Metal Mobile Objects Employing a Simple RFID Setup

A Novel Multivariable Algorithm for Detecting and Tracing Metal Mobile Objects Employing a Simple RFID Setup

A dual band dual antenna with read range enhancement for UHF RFID tags

Passive RFID tags for Metallic Environments Using Phased Array Reader Antennas

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