A text-meandered RFID tag implemented with conductive threads

Nu Pham; Ngoc Chien Dao; Jae Young Chung

doi:10.1002/mop.29956

A text-meandered RFID tag implemented with conductive threads

Nu Pham, Ngoc Chien Dao, Jae Young Chung

Dept. of Electrical and Information Engineering

Seoul National University of Science and Technology (SNUST)

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We present a wearable RFID tag implemented on a fabric, comprising four alphabet texts embroidered by conductive threads. The tag is optimized to provide a conjugate match to the RFID chip impedance at the operation frequency, 910 MHz. Various tags with different stitching patterns and thread diameters are examined in simulation and a number of tags are measured using two-port differential probe suitable for balanced tag structures. The measured results of tag impedance show good agreements to the simulation results with slight errors caused by imperfection in probe calibration.

Original language	English
Pages (from-to)	1978-1984
Number of pages	7
Journal	Microwave and Optical Technology Letters
Volume	58
Issue number	8
DOIs	https://doi.org/10.1002/mop.29956
State	Published - 1 Aug 2016

Keywords

antenna
conductive threads
impedance measurement
RFID
wearable antenna

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10.1002/mop.29956

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abstract = "We present a wearable RFID tag implemented on a fabric, comprising four alphabet texts embroidered by conductive threads. The tag is optimized to provide a conjugate match to the RFID chip impedance at the operation frequency, 910 MHz. Various tags with different stitching patterns and thread diameters are examined in simulation and a number of tags are measured using two-port differential probe suitable for balanced tag structures. The measured results of tag impedance show good agreements to the simulation results with slight errors caused by imperfection in probe calibration.",

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AB - We present a wearable RFID tag implemented on a fabric, comprising four alphabet texts embroidered by conductive threads. The tag is optimized to provide a conjugate match to the RFID chip impedance at the operation frequency, 910 MHz. Various tags with different stitching patterns and thread diameters are examined in simulation and a number of tags are measured using two-port differential probe suitable for balanced tag structures. The measured results of tag impedance show good agreements to the simulation results with slight errors caused by imperfection in probe calibration.

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KW - impedance measurement

KW - RFID

KW - wearable antenna

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A text-meandered RFID tag implemented with conductive threads

Abstract

Keywords

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