Planar Compact Square-Ring Tag Antenna With Circular Polarization for UHF RFID Applications

Lu, Jui‐Han; Chang, Bo-Shen

doi:10.1109/tap.2016.2633162

Cited by 37 publications

(50 citation statements)

References 23 publications

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“…The proposed cross dipole antenna has smaller 3 dB axial ratio bandwidth but size of the antenna is also smaller except for References and . The CP tag antennas in References and have smaller dimensions, but they have a smaller read range than the proposed antenna. The proposed antenna exhibits larger gain and longer reading range except for Reference .…”

Section: Resultsmentioning

confidence: 98%

“…Table demonstrates comparison among the proposed antenna and previously reported circularly polarized antennas in terms of the maximum read range, antenna size, 3 dB axial ratio bandwidth, and gain. The read range of the antennas reported in References and are computed with circularly polarized readers having EIRP of 4 W and in Reference , 3.28 W EIRP has been used. The proposed cross dipole antenna has smaller 3 dB axial ratio bandwidth but size of the antenna is also smaller except for References and .…”

Section: Resultsmentioning

confidence: 99%

“…The read range of the antennas reported in References and are computed with circularly polarized readers having EIRP of 4 W and in Reference , 3.28 W EIRP has been used. The proposed cross dipole antenna has smaller 3 dB axial ratio bandwidth but size of the antenna is also smaller except for References and . The CP tag antennas in References and have smaller dimensions, but they have a smaller read range than the proposed antenna.…”

Section: Resultsmentioning

confidence: 99%

“…The meandered‐loop antenna exhibits antenna size miniaturization in comparison to square‐loop antenna. A CP square ring tag with meander strip is proposed for the automatic toll collection system which reported 64% smaller size than the antennas attached to safety glass but it has only 8.3 m read range.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Linearly tapered meander line cross dipole circularly polarized antenna for UHF RFID tag applications

Bhaskar

Singh

2018

Int J RF Microw Comput Aided Eng

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In this article, a circularly polarized antenna for ultra‐high frequency radio frequency identification (RFID) tag is presented. The circular polarization is realized by two orthogonal, unequal length linearly tapered meander line cross dipoles. The meander structure with capacitive tip loading is used for size miniaturization of the antenna. A modified T‐match network is employed to feed the cross dipole structure. The measured 10‐dB return loss bandwidth of the cross dipole antenna is 17 MHz (908‐923 MHz) and the corresponding 3‐dB axial ratio bandwidth is 6 MHz (912‐918 MHz). The overall size of the proposed antenna is 0.17λ0 × 0.17λ0 at 915 MHz. The maximum read range between the reader and the tag with the proposed antenna is 4.7 m larger than the analogous linearly polarized tag antenna due to the reduction in polarization loss between the tag and reader antennas. Thus, a maximum read range of 15.66 m with the gain of 1.28 dBic is achieved at 915 MHz.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Linearly tapered meander line cross dipole circularly polarized antenna for UHF RFID tag applications

Bhaskar

Singh

2018

Int J RF Microw Comput Aided Eng

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“…Figure 8 depicts the plot of the axial ratio (AR) of the proposed tag. It can be observed that an axial ratio bandwidth of 12 MHz (908-920 MHz) has been successfully achieved in the proposed design [20]. Figure 9 shows the simulated and measured radiation pattern along with measured readrange that shows the proposed antenna has very good ciruclarly polarized radiation characteristics [21].…”

Section: Characteristics Of Antennamentioning

confidence: 86%

Localization of Compact Circularly Polarized RFID Tag Using ToA Technique

Khan¹,

Rasheed²,

Aslam³

et al. 2017

RADIOENGINEERING

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Compact meandered RFID tag antenna with high read range for UHF band applications

Bansal

Sharma

Khanna

2019

Int J RF Microw Comput Aided Eng

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In this work, a compact, long read range, and an efficient spiral loop structure coupled tag antenna is proposed for UHF-RFID applications. Meandered line element is inductively coupled to spiral loop for matching its input impedance to Higgs-4 chip. Equivalent circuit of antenna is extracted to analyze its working mechanism in the operating band. Experimental characterization validates the performance of proposed tag antenna in free space and on cardboard sheet in terms of read range, tag sensitivity, and differential radar cross section with an EIRP of 3.28 W. The measured radiation pattern of the tag is found to be omnidirectional in H plane and figure of eight in E plane. The tag's read range is measured on objects like fiber, wood, plastic, and glass in outdoor scenario to study its environment tolerance. The tag antenna has volumetric size of 1736 mm 3 and read range of 13.6 m in US RFID band. K E Y W O R D S inductive loop feed, radar cross section (ΔRCS), read range, tag sensitivity, UHF (ultrahigh frequency) radio frequency identification (RFID) tag antenna

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Planar Compact Square-Ring Tag Antenna With Circular Polarization for UHF RFID Applications

Cited by 37 publications

References 23 publications

Linearly tapered meander line cross dipole circularly polarized antenna for UHF RFID tag applications

Linearly tapered meander line cross dipole circularly polarized antenna for UHF RFID tag applications

Localization of Compact Circularly Polarized RFID Tag Using ToA Technique

Compact meandered RFID tag antenna with high read range for UHF band applications

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