Compact metallic RFID tag antennas with a loop-fed method

Peng H. Yang; Yan Li; Lijun Jiang; W. C. Chew; Terry Tao Ye

doi:10.1109/TAP.2011.2165484

Compact metallic RFID tag antennas with a loop-fed method

Peng H. Yang, Yan Li, Lijun Jiang, W. C. Chew, Terry Tao Ye

Electrical and Computer Engineering

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

Abstract

Several compact, low profile and metal-attachable RFID tag antennas with a loop-fed method are proposed for UHF RFID systems. The structure of the proposed antennas comprise of two parts: (1) The radiator part consists of two shorted patches, which can be treated as two quarter-wave patch antennas or a cavity. (2) A small loop printed on the paper serves as the feeding structure. The small loop provides the needed inductance for the tag and is connected to the RFID chip. The input impedance of the antenna can be easily adjusted by changing loop dimensions. The antenna has the compact size of 80 mm × 25 mm × 3.5 mm, and the realized gain about -3.6 dB. The measured results show that these antennas have good performance when attached onto metallic surfaces.

Original language	English (US)
Article number	5991909
Pages (from-to)	4454-4462
Number of pages	9
Journal	IEEE Transactions on Antennas and Propagation
Volume	59
Issue number	12
DOIs	https://doi.org/10.1109/TAP.2011.2165484
State	Published - Dec 2011

Keywords

Compact antenna
RFID tag antenna
feeding network
low profile
metallic surface

ASJC Scopus subject areas

Electrical and Electronic Engineering

Online availability

10.1109/TAP.2011.2165484

Library availability

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title = "Compact metallic RFID tag antennas with a loop-fed method",

abstract = "Several compact, low profile and metal-attachable RFID tag antennas with a loop-fed method are proposed for UHF RFID systems. The structure of the proposed antennas comprise of two parts: (1) The radiator part consists of two shorted patches, which can be treated as two quarter-wave patch antennas or a cavity. (2) A small loop printed on the paper serves as the feeding structure. The small loop provides the needed inductance for the tag and is connected to the RFID chip. The input impedance of the antenna can be easily adjusted by changing loop dimensions. The antenna has the compact size of 80 mm × 25 mm × 3.5 mm, and the realized gain about -3.6 dB. The measured results show that these antennas have good performance when attached onto metallic surfaces.",

keywords = "Compact antenna, RFID tag antenna, feeding network, low profile, metallic surface",

author = "Yang, {Peng H.} and Yan Li and Lijun Jiang and Chew, {W. C.} and Ye, {Terry Tao}",

note = "Funding Information: Manuscript received September 13, 2010; revised May 13, 2011; accepted June 21, 2011. Date of publication August 18, 2011; date of current version December 02, 2011. This work was supported in part by Hong Kong R&D Centre for Logistics and Supply Chain Management Enabling Technologies (LSCM) and in part by Innovation and Technology Fund (ITF, No. ITS/159/09), the government of the Hong Kong SAR.",

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N1 - Funding Information: Manuscript received September 13, 2010; revised May 13, 2011; accepted June 21, 2011. Date of publication August 18, 2011; date of current version December 02, 2011. This work was supported in part by Hong Kong R&D Centre for Logistics and Supply Chain Management Enabling Technologies (LSCM) and in part by Innovation and Technology Fund (ITF, No. ITS/159/09), the government of the Hong Kong SAR.

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N2 - Several compact, low profile and metal-attachable RFID tag antennas with a loop-fed method are proposed for UHF RFID systems. The structure of the proposed antennas comprise of two parts: (1) The radiator part consists of two shorted patches, which can be treated as two quarter-wave patch antennas or a cavity. (2) A small loop printed on the paper serves as the feeding structure. The small loop provides the needed inductance for the tag and is connected to the RFID chip. The input impedance of the antenna can be easily adjusted by changing loop dimensions. The antenna has the compact size of 80 mm × 25 mm × 3.5 mm, and the realized gain about -3.6 dB. The measured results show that these antennas have good performance when attached onto metallic surfaces.

AB - Several compact, low profile and metal-attachable RFID tag antennas with a loop-fed method are proposed for UHF RFID systems. The structure of the proposed antennas comprise of two parts: (1) The radiator part consists of two shorted patches, which can be treated as two quarter-wave patch antennas or a cavity. (2) A small loop printed on the paper serves as the feeding structure. The small loop provides the needed inductance for the tag and is connected to the RFID chip. The input impedance of the antenna can be easily adjusted by changing loop dimensions. The antenna has the compact size of 80 mm × 25 mm × 3.5 mm, and the realized gain about -3.6 dB. The measured results show that these antennas have good performance when attached onto metallic surfaces.

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Compact metallic RFID tag antennas with a loop-fed method

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