Low-cost scalable UHF RFID reader antenna with no surface dead zones

Parthiban, P.; Seet, Boon‐Chong; Li, Xue Jun

doi:10.1109/apace.2016.7916432

Cited by 5 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is not a true near-field antenna design as opposed to the proposed antenna design. The travelling-wave antenna design in [11] is not miniature, and it is hundred times larger than the proposed design. Moreover, the antenna has very narrow band and has both near-field and far-field components present.…”

Section: Related Workmentioning

confidence: 92%

“…Previous works reported in near-field UHF RFID include low gain patch antenna array designs [4,5], loops and segmented antennas [6][7][8], segmented dipole in [9], meandered lines in [10], and travellingwave in [11]. None of these antenna designs is miniature.…”

Section: Related Workmentioning

confidence: 99%

“…A narrow microstrip line will have more spurious emissions on its surface [11] compared to a wider line. These emissions can be concentrated by arranging the microstrip line in a spiral fashion.…”

Section: Antenna Designmentioning

confidence: 99%

See 2 more Smart Citations

Embeddable Miniature Uhf Rfid Near-Field Antenna for Healthcare Applications

Parthiban¹

2019

PIER M

Self Cite

View full text Add to dashboard Cite

A novel embeddable miniature near-field reader antenna is designed for Ultra-High Frequency (UHF) Radiofrequency Identification (RFID) applications in the healthcare sector. The antenna spans 45 mm(length) × 20 mm(width) × 1.6 mm (thick) in size. The antenna is tuned for UHF RFID region-2 frequencies, 902 to 928 MHz. The antenna's −15 dB return loss bandwidth is 140 MHz. The antenna has very low far-field gain, and thus false reads of undesired tags are eliminated. The antenna can read both near-fields, and far-field tags as its magnetic field distribution on its surface are uniform with no dead zones. This miniature, light weight antenna is easy to embed and suitable for niche applications like surgical instrument tracking, dental instrument inventory, etc. The antenna's immunity towards proximity metal assets makes it more suitable for healthcare applications.

show abstract

Section: Related Workmentioning

confidence: 92%

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

Embeddable Miniature Uhf Rfid Near-Field Antenna for Healthcare Applications

Parthiban¹

2019

PIER M

Self Cite

View full text Add to dashboard Cite

show abstract

“…Research has been performed in designing no surface dead zone antennae. [5] [6] [7] [8] The RFID reader transmits an electromagnetic signal of a full bandwidth less than 1 MHz hopping 75 or more channels 30 seconds by swiftly switching the carrier signals through the available ETSI frequency channels. Another solution is to use a circularly polarized antenna where a spiral beam rotating with time is emitted thus giving advantage for the reader to detect transponders in any orientation.…”

Section: Introductionmentioning

confidence: 99%

A Generalized 90° Out-of-Phase Wilkinson Power Divider for Dual Port UHF CP RFID Antennae with variable Port Distance

Sovis¹,

Jayasooriya²

2020

Preprint

View full text Add to dashboard Cite

In this paper a microstrip Wilkinson power divider with a 90° phase delay at one output port is proposed to obtain circular polarization to feed a dual port RFID antenna. The 90° phase delay was obtained by embedding an extra quarter wavelength at one port of the Wilkinson power divider. The feeding circuit is then mounted on the ground plane of the microstrip antenna feeding the radiating patch directly through the ground plane and dielectric layer thus reducing any fringing effect and resulting a mechanically compact unit. The proposed feeding method offers better expectation of antenna performance with minimal attenuation and coupling losses. The design process generalizes geometric pa- rameters of the Wilkinson power divider for variable port distances. The paper considers both UK and US RFID center frequencies, 870 MHz and 915 MHz respectively. Numeri- cally computed values for geometric design parameters for both frequencies are tabled as future design tools for port distances varying from 18 mm up to 34 mm at 870 MHz and 17 mm up to 32 mm at 915 MHz. Simulation results indicate a return loss (S11) of -20 dB and -26 dB at 870 MHz and 915 MHz operational frequencies respectively at 270° angled quarter wavelength.

show abstract