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

Bhaskar, Sudhir; Singh, Amit Kumar

doi:10.1002/mmce.21563

Cited by 11 publications

(11 citation statements)

References 23 publications

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“…The proposed tag has smaller dimensions and higher gain as compared to tags designed in References 3,16,24,29,41, and 42 Also, the proposed tag exhibits higher measured read range than tags in References 3,16,24,and 41‐43 except References 28 and 29. However, the tags reported in References 28 and 29 have slightly larger read range as compared to the proposed tag due to higher EIRP. Even though the tags in References 3,24,41,and 42 cover both UHF‐RFID bands but they have larger volumetric size and smaller read range.…”

Section: Experimental Characterizationmentioning

confidence: 84%

“…The proposed antenna is composed of non‐uniform (NU) meandered monopole and ground, both, printed on same layer of 0.8‐mm‐thick FR4 substrate ( є r = 4.4, tan delta = 0.0245). The meandered approach reduces the size, and non‐uniform length structure improves antenna radiation efficiency 29 . The non‐uniform length does not allow cancelation of currents in adjacent meandered segments flowing in the opposite directions resulting in better radiation.…”

Section: Antenna Design Methodology and Parametric Studymentioning

confidence: 99%

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Linearly tapered meander line broadband monopole tag antenna with T‐match for Ultra High Frequency Radio Frequency Identification applications

Bansal

Sharma

Khanna

2020

Int J RF Microw Comput Aided Eng

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In this paper, a compact, broadband linearly tapered meandered monopole tag antenna for UHF-RFID is designed and optimized using particle swarm optimization (PSO) algorithm. An inductive T-match network is utilized for impedance matching with capacitive Higgs-4 chip. The optimization goal of PSO was conjugate matching and in consequence the maximization of read range. Equivalent circuit of the proposed tag antenna is derived using ADS software to validate its impedance characteristics. The performance of the proposed tag in terms of tag power sensitivity, read range, realized gain, and differential radar cross section has been experimentally characterized. To check the tolerance of the designed tag to various object platforms, its read range performance is also verified on objects like wood, fiber, plastic, and so forth. Furthermore, read pattern of the proposed tag has been measured and found to have figure of eight in E-plane and omnidirectional in H-plane. Experimental results reveal that the proposed tag covers 865-867 MHz (ETSI band, Europe) and 902-928 MHz (FCC band, United States) both major RFID bands with a read range of 10 and 12 m, respectively. The proposed tag has 2060 mm 3 of volumetric size with maximum measured readable distance of 12 m with EIRP of 3.28 W. K E Y W O R D S differential radar cross section (ΔRCS), radio frequency identification (RFID) tag antenna, read range, tag sensitivity, ultra-high frequency (UHF)

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Section: Experimental Characterizationmentioning

confidence: 84%

Section: Antenna Design Methodology and Parametric Studymentioning

confidence: 99%

Linearly tapered meander line broadband monopole tag antenna with T‐match for Ultra High Frequency Radio Frequency Identification applications

Bansal

Sharma

Khanna

2020

Int J RF Microw Comput Aided Eng

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“…In addition to this, we also compared our design with some of the cross dipole based circular polarized (CP) antennas published in [19][20] and [39][40], which usually consist of a single-layer substrate without a ground plane, therefore not suitable for platform tolerant or metal mountable applications. Some other cross-dipole based antennas presented in [21][22][23] are suitable for platform tolerant or metal mountable applications.…”

Section: Read Range Testingmentioning

confidence: 99%

Planar Pyramid Shaped UHF RFID Tag Antenna With Polarisation Diversity for IoT Applications Using Characteristics Mode Analysis

et al. 2020

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This paper presents a novel dual polarised tag antenna design for ultra-high frequency radio frequency identification (UHF RFID) featuring polarisation or frequency band diversity using characteristic mode analysis. The proposed tag design consists of two meandered line bowtie or dipole-like structure (resembles with planar pyramid), shorting stubs, and a ground plane. The initial design comprises of an upper patch wrapped around FR 4 substrate and shorted from all side to ground plane using shorting stubs. After running the characteristic mode analysis of the initial design, the diagonal slots are created to transform the resonant behavior of corresponding characteristic modes towards lower frequency band. However, the characteristics modes of diagonal slots-based structure still shows inductive behavior in US RFID band (902-928 MHz). Therefore, the parallel slots having capacitive performance are etched to realise the resonance behaviour of modes in the required RFID band. The positions and dimensions of parallel slots are optimised further to achieve a better conjugate impedance match with RFID chip. Moreover, the frequency band of one or both meandered line dipole-like structures can be tuned to European UHF RFID band by varying the length of the shorting walls. The RFID chip is directly placed at the current minima to run diversity modes. The overall dimensions of the proposed tag antenna are 50×50×2 mm 3 hence making this dual polarised tag antenna low-cost and easy to fabricate due to the absence of vias, shorting pins, and any matching circuit. Additionally, the proposed tag design offers 3-dB bandwidth ranging from 900 MHz to 940 MHz (40 MHz) together with orientation insensitive 3D read range pattern. The proposed tag design achieved a read range of 5.5 m and 8.5 m on low permittivity dielectric material and 200 × 200 mm 2 metal plate, respectively. INDEX TERMS Radiofrequency identification (RFID), UHF tag antenna design, Impedance matching, Metal mountable tag, polarisation diversity.

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“…A CPW-fed folded-slot monopole antenna for the active RFID tags at 5.8 GHz is presented in [8]. Crossed-dipole compact circularly polarized antennas [9,10] with a modified T -match network are reported with increased read distance. However, the overall size in circularly polarized case is more than linearly polarized antenna at the same operating frequency.…”

Section: Introductionmentioning

confidence: 99%

A Compact Meander Line Uhf Rfid Antenna for Passive Tag Applications

Bhaskar¹,

Singh²

2021

PIER M

Self Cite

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In this article, a meander line dipole antenna for radio frequency identification (RFID) tag is presented. The loaded meander antenna has a simple meander line structure with a spiral inductor at the end for size miniaturization, a T-match structure, and an inductively coupled parasitic element for impedance matching with the tag IC. The antenna is designed to operate in North American UHF RFID frequency band of 915 MHz. The size of the proposed tag antenna is 50 mm × 12 mm and has good impedance matching with Alien Higgs IC chip of 13.5 − j111Ω at the desired frequency band. The proposed tag antenna provides omnidirectional radiation pattern with a maximum read range of 3.5 m at an effective isotropic radiated power of 4 W. Simulation results are in good agreement with measurement results.

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

Cited by 11 publications

References 23 publications

Linearly tapered meander line broadband monopole tag antenna with T‐match for Ultra High Frequency Radio Frequency Identification applications

Linearly tapered meander line broadband monopole tag antenna with T‐match for Ultra High Frequency Radio Frequency Identification applications

Planar Pyramid Shaped UHF RFID Tag Antenna With Polarisation Diversity for IoT Applications Using Characteristics Mode Analysis

A Compact Meander Line Uhf Rfid Antenna for Passive Tag Applications

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