Integration of split ring resonators (SRRs) to UHF RFID tag antenna for size reduction

Daud, Nor Hidayah; Ismail, Alyani; Alhawari, Adam R. H.; Sali, Aduwati; Rasid, Mohd Fadlee A.; Jalal, Ali Sadeq Abdulhadi

doi:10.1109/ice2t.2014.7006247

“…Then, the tag identifies the signal and stores the information. Finally, the host realizes the decoded data from readers [4]. In 1948, Stockman articled the first RFID system [2].…”

Section: Introductionmentioning

confidence: 99%

On the Performance of a Microstrip Antenna Based UC-PBG Structures for UHF RFID Readers

Jalal¹,

Jwair²

2018

ETJ

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Microstrip antennas suffer from low gain bandwidth product due to surface wave effects and aperture diffractions that limit their use for longrange communications. On top of that, the difficulty of achieving a pure circularly polarized radiation with high gain due to the feeding structure effects. This paper is subjected to design a gain enhanced circularly polarized patch antenna using Uniplanar Compact-Photonic Band Gap (UC-PBG) structu.res for UHF RFID applications. The patch is structured as truncated corners with cross slots at the centre mounted on an FR-4 epoxy substrate of 1.6mm thickness with an overall area of 188×188mm 2. The UC-PBG is constructed of two layers; each is made of 7×7 unit cells, separated by 20mm mounted from the top of the patch at 30mm height. The unit cell characterizations are evaluated in terms of their S-parameters and dispersion diagram CST-MWS environment. The antenna shows a boresight gain of about 8.2 dBi at 915MHz with a front to back ratio (F/B) of 13dB. The benchmark enhancement in boresight gain after adding the UC-PBG layers is found to be 3.4 dBi with a radiation efficiency of 87%. Finally, an excellent agreement is achieved between the obtained measurements and numerical results.

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“…Then, the tag identifies the signal and stores the information. Finally, the host realizes the decoded data from readers [4]. In 1948, Stockman articled the first RFID system [2].…”

Section: Introductionmentioning

confidence: 99%

Untitled

2018

ETJ

0

View full text Add to dashboard Cite

Microstrip antennas suffer from low gain bandwidth product due to surface wave effects and aperture diffractions that limit their use for longrange communications. On top of that, the difficulty of achieving a pure circularly polarized radiation with high gain due to the feeding structure effects. This paper is subjected to design a gain enhanced circularly polarized patch antenna using Uniplanar Compact-Photonic Band Gap (UC-PBG) structu.res for UHF RFID applications. The patch is structured as truncated corners with cross slots at the centre mounted on an FR-4 epoxy substrate of 1.6mm thickness with an overall area of 188×188mm 2. The UC-PBG is constructed of two layers; each is made of 7×7 unit cells, separated by 20mm mounted from the top of the patch at 30mm height. The unit cell characterizations are evaluated in terms of their S-parameters and dispersion diagram CST-MWS environment. The antenna shows a boresight gain of about 8.2 dBi at 915MHz with a front to back ratio (F/B) of 13dB. The benchmark enhancement in boresight gain after adding the UC-PBG layers is found to be 3.4 dBi with a radiation efficiency of 87%. Finally, an excellent agreement is achieved between the obtained measurements and numerical results.

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“…A meandered dipole RFID tag with capacitive tip loading built-in with the SRR was reported [21]. The paper discussed about an antenna design with a compact size, trouble-free structure and elevated competence.…”

Section: Introductionmentioning

confidence: 99%

SRR Loaded Compact Uhf Rfid Tag for Broadband Operation

Kunju¹,

Abraham²,

Mathew³

2016

PIER C

5

0

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Abstract-An SRR loaded compact RFID tag for broadband operation over the UHF RFID band is presented. The tag antenna structure is composed of a dipole whose arms are symmetrically loaded with square split ring resonators (SRRs) along a short circuited strip between the SRRs. The antenna is made inductive and reduced in overall size by the SRR sections. The measured read range characteristics of the proposed RFID tag with an RFID chip Alien Higgs-3 are presented. The proposed tag operates over the entire UHF RFID band about a maximum read range of 7 meters in the entire elevation angular ranges and over wide azimuthal angular ranges.

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Integration of split ring resonators (SRRs) to UHF RFID tag antenna for size reduction

Cited by 12 publications

References 17 publications

On the Performance of a Microstrip Antenna Based UC-PBG Structures for UHF RFID Readers

On the Performance of a Microstrip Antenna Based UC-PBG Structures for UHF RFID Readers

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SRR Loaded Compact Uhf Rfid Tag for Broadband Operation

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