Wideband Long Range, Radiation Efficient Compact UHF RFID Tag

Choudhary, Abhishek; Sood, Deepak; Tripathi, C. C.

doi:10.1109/lawp.2018.2844249

Cited by 26 publications

(15 citation statements)

References 13 publications

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“…However, even the read-ranges of passive tags published before 2013 are shorter than the proposed Sensors 2019, 19, 5460 3 of 13 one. For a better understanding of existing evidence, we have review the literatures in [23][24][25][26][27][28][29][30][31], and in Table 1. All the above papers are designed to have long read-range, as we can see in the following table.…”

Section: Review On Long-range Uhf Rfid Tag Antennamentioning

confidence: 99%

Longest-Range UHF RFID Sensor Tag Antenna for IoT Applied for Metal and Non-Metal Objects

Byondi

Chung

2019

Sensors

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This paper presents a passive cavity type Ultra High Frequency (UHF) Radio Frequency Identification (RFID) tag antenna having the longest read-range, and compares it with existing long-range UHF RFID tag antenna. The study also demonstrates mathematically and experimentally that our proposed longest-range UHF RFID cavity type tag antenna has a longer read-range than existing passive tag antennas. Our tag antenna was designed with 140 × 60 × 10 mm 3 size, and reached 26 m measured read-range and 36.3 m mathematically calculated read-range. This UHF tag antenna can be applied to metal and non-metal objects. By adding a further sensing capability, it can have a great benefit for the Internet of Things (IoT) and wireless sensor networks (WSN).Keywords: RFID tag antenna; long range RFID tag; cavity antenna; RFID metal tag; RFID sensors; Internet of things; wireless sensor network; RFID-based IoT; RFID based WSN; smart RFID IntroductionRFID uses electromagnetic fields to identify automatically and to track tags attached on any object. It's used for applications like animal tagging, asset tracking, electronic passports, smartcards, store security, logistic and etc. [1]. The tags store object information electronically. There are passive and active RFID tags. There are LF (low frequency), HF (high frequency) and UHF RFID tag antennas [2] based on the frequency bands. Passive tags have no battery and collect energy from nearby RFID readers by interrogating radio waves, whereas active tags have a battery and can be detected over 100 m.According to applications and design technology, there are many articles published about UHF active tags. The read-range of the active tag is above 1 km with tag sensitivity under −80 dBm in 5.8 GHz and 433MHz bands [3][4][5]. On the other hand, a general passive UHF tags have about 10-20 m read-range based on the sensitivity of the tag chip and the types of antennas.Our passive UHF RFID tags have longer read-range than other designs. There will be benefits of tag with longer read-range since it can be incorporate with the sensing and communicating capabilities.Article [6] describes many novel applications of RFID sensors, novel antennas for metallic surface, 3D antennas, multi-band antennas, omnidirectional, and directional antennas in UHF, HF, or microwaves (MW) frequency bands. The sizes and read-range are also compared with different RFID Chips, and the longest read-range in the article is 14.6 m for the metal mountable antenna. Our passive UHF RFID tag had 26 m read-range using Higgs 4 RFID Chip manufactured by Alien Tech. Higgs 4 has sensitivity of −20.5 dBm.The more sensitivity of RFID tag chip has longer read-range with the same antenna. Different manufactures and different RFID chips have different level of sensitivities. The chip with the better sensitivity allows the tag to be read from farther range. If tag with longer read-range is integrated with sensors, it can have the following advantages: wireless powered identification in non-line-of-sight way, wide coverage and mobility RF...

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Section: Review On Long-range Uhf Rfid Tag Antennamentioning

confidence: 99%

Longest-Range UHF RFID Sensor Tag Antenna for IoT Applied for Metal and Non-Metal Objects

Byondi

Chung

2019

Sensors

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“…The overall performance of the proposed optimized tag antenna is evaluated in terms of gain and radiation efficiency. Figure A shows the simulated results of the gain of the antenna which displays its maximum value of 2.62 dB at the desired resonant frequency showing a significant improvement compared to . Moreover, radiation efficiency graph shown in Figure B depicts that proposed antenna has more than 85% efficiency in whole of the operating band and 99% efficiency at the resonant frequency of 915 MHz.…”

Section: Simulation Resultsmentioning

confidence: 93%

“…Further experimental analysis of the designed tag in terms of read range and tag sensitivity is carried out in Section 6 and finally the conclusions are made in Section 7. It is seen that proposed tag antenna has a better gain and smaller size with as compared to the other reported tags for UHF RFID applications …”

Section: Introductionmentioning

confidence: 86%

“…Read range is defined as the minimum distance ( R max ) at which tag is able to power up the chip and respond the reader in the required band, and is calculated using Friis transmission equation as:

R_{\max} = \frac{λ}{4 π} {(\frac{P_{EIRP} G_{r} τ}{P_{italicic}})}^{1 / 2} = \frac{λ}{4 π} {(\frac{P_{EIRP}}{P_{tag}})}^{1 / 2},

where effective isotropic radiated power, P EIRP = P tx · G tx , with P tx as the transmitted power and G tx as gain of the reader, τ is the power transmission coefficient as defined in Equation , G r is the gain of the designed tag antenna as defined in Equation , P ic = −20 dBm is the minimum threshold power of the chip to get turned on, known as chip sensitivity, and λ is the free space wavelength at operating frequency. In order to demonstrate the tag performance optimally, P EIRP of 3.28 W is focused towards the tag as specified by European telecommunication standard Institute (ETSI) …”

Section: Experimental Setup and Analysismentioning

confidence: 99%

“…To acquire high read range, tag antenna must possess high radiation efficiency. In addition to it, read range can be enhanced by achieving proper impedance matching between the tag antenna and tag IC (microchip) …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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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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Wideband Long Range, Radiation Efficient Compact UHF RFID Tag

Cited by 26 publications

References 13 publications

Longest-Range UHF RFID Sensor Tag Antenna for IoT Applied for Metal and Non-Metal Objects

Longest-Range UHF RFID Sensor Tag Antenna for IoT Applied for Metal and Non-Metal Objects

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

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

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