Compact design of UHF RFID and NFC antennas for mobile phones

Paredes, Ferran; Cairó, Ignasi; Zuffanelli, Simone; Zamora, Gerard; Bonache, Jordi; Martín, Ferran

doi:10.1049/iet-map.2016.0794

Cited by 5 publications

(10 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…e initial d out of the square spiral structure is 50 mm, which is the width of typical key card. Figure 2 illustrates the inductive reactance of the square spiral structure under variable numbers of turns (n) and d out , i.e., (4,80), (5,64), (6,55), (7,50), (8,48), (9, 47), (10,46), and (11,46), with the resulting inductive reactance of 228.96 Ω -238.17 Ω. Ideally, the inductive reactance of the square spiral structure should be 234.73 Ω (L � 2,755 nH).…”

Section: Antenna Configuration and Designmentioning

confidence: 99%

“…e target of greater performance with compact dimension is desirable. e RFID near-field and far-field antennas operating in dual HF band and UHF band have been presented in [3][4][5][6][7]. To conserve the antenna size, the HF-RFID and UHF-RFID tag antennas were designed in proximity with good isolation [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…e RFID near-field and far-field antennas operating in dual HF band and UHF band have been presented in [3][4][5][6][7]. To conserve the antenna size, the HF-RFID and UHF-RFID tag antennas were designed in proximity with good isolation [3][4][5]. Alternatively, the design of the dualband RFID tag antennas is to accommodate the UHF-RFID tag antenna into the HF-RFID tag antenna because the typical HF-RFID tag antenna is relatively larger due to lower frequency operation [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Alternatively, the design of the dualband RFID tag antennas is to accommodate the UHF-RFID tag antenna into the HF-RFID tag antenna because the typical HF-RFID tag antenna is relatively larger due to lower frequency operation [6,7]. Specifically, the near-field RFID capability is realized by using planar coil structures, and the far-field UHF-RFID capability is achieved using Hilbert curve [3], C-shaped radiator [4], bent rectangular patch [5], meander line [6], and S-dipole [7]. ese antennas [4][5][6][7] can be communicated with the RFID reader antenna using magnetic coupling in HF band and electromagnetic radiation in UHF band.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Near-Field HF-RFID and CMA-Based Circularly Polarized Far-Field UHF-RFID Integrated Tag Antenna

Sakonkanapong

Phongcharoenpanich

2020

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

This research proposes an integrated high-frequency (HF) and ultrahigh-frequency (UHF) passive radio frequency identification (RFID) tag antenna for near-field (13.56 MHz) and far-field (920–925 MHz) communication. This tag antenna is advantageous for the applications with lossy material in the near-field communication and mitigates polarization loss in the far-field communications. The HF-RFID tag antenna is of square spiral structure, and the circularly polarized UHF-RFID structure consists of a square loop radiator with cascading loop feeding and shorted stub. The structure of HF-RFID tag antenna situated inside the circularly polarized UHF-RFID tag can avoid the significant effect of the near-field magnetic coupling from the square loop. The UHF-RFID tag antenna is realized by using characteristic mode analysis for wideband circular polarization. The HF-RFID structure is conjugate-matched with NXP NT3H2111 chip, and the UHF-RFID structure is conjugate-matched with NXP G2X chip. Simulations were carried out, and an antenna prototype was fabricated. The experimental results reveal that the radiation pattern of UHF-RFID tag antenna is bidirectional with a gain of 0.31 dBic. The impedance bandwidth covers the frequency range of 903–944 MHz, and the axial ratio in boresight direction at 922.5 MHz is 1.67 dB, with the axial ratio bandwidth over 863–938 MHz. The maximum near-field and far-field reading ranges are 4.9 cm and 8.7 m. The proposed integrated dual-band passive tag antenna is operationally ideal for HF-RFID and UHF-RFID applications.

show abstract

Section: Antenna Configuration and Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Near-Field HF-RFID and CMA-Based Circularly Polarized Far-Field UHF-RFID Integrated Tag Antenna

Sakonkanapong

Phongcharoenpanich

2020

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

show abstract

“…Sistemas de comunicação de campo próximo (NFC -Near-Field Communication) operam na faixa de frequência de 13,56 MHz e possuem taxa de transmissão de dados de 106 a 424 kbit/s, de acordo com a ISO15693 [1]. Além de possuir uma relação complementar à tecnologia RFID (Radio-Frequency Identification), a tecnologia NFC é capaz de viabilizar a comunicação com dispositivos que usam redes sem fio Bluetooth e Wi-Fi [2] [3]. Entretanto, pode-se dizer que as principais características desses sistemas são os altos níveis de segurança e qualidade sem um processo de emparelhamento, devido a uma limitação da distância de no máximo 10 cm [4].…”

Section: Introductionunclassified

Antena "N" de alto desempenho para aplicações NFC

Filgueiras¹,

Sêda²,

Santos³

et al. 2019

Anais De XXXVII Simpósio Brasileiro De Telecomunicações E Processamento De Sinais

View full text Add to dashboard Cite

Resumo-O trabalho apresenta o desenvolvimento de uma antena "N" para aplicações NFC em 13,56 MHz. O projeto da antena baseou-se em uma distribuição de campo magnético uniforme ao longo da estrutura, a fim de aumentar o acoplamento entre antena e tag do sistema NFC. Comparou-se a antena "N" com modelo comercial e resultados experimentais demonstraram desempenho superior. Apresenta-se resultados numéricos e experimentais com ótima concordância e melhora de 21,8 dB no acoplamento.

show abstract

IoT-Linked Integrated NFC and Dual Band UHF/2.45 GHz RFID Reader Antenna Scheme

Romputtal

Phongcharoenpanich

2019

IEEE Access

View full text Add to dashboard Cite

This research proposes a system board of integrated antenna scheme of near-field communication (NFC) and dual band ultra-high frequency (UHF, 920-925 MHz)/2.45 GHz radio frequency identification (RFID) reader antennas for Internet of Things (IoT) applications. The integrated antenna scheme is capable of simultaneous execution of NFC and UHF RFID functions whereby the NFC and UHF RFID modules, which are serially connected to a microcontroller with Wi-Fi module (NodeMCU), read the universal identification (UID) of NFC and UHF RFID tags. The data are then forwarded to a cloud server via Internet of Things (IoT) and are viewable on smartphones using Blynk mobile application via IoT. To realize the optimal antenna design, simulations were carried out using CST Studio Suite. Prototype antennas were subsequently fabricated and integrated into the system board for IoT-linked near-and farfield communication. The simulation and measured results are in good agreement. The NFC reader antenna resonates at 13.56 MHz, and the dual band UHF/2.45 GHz RFID reader antenna achieves the 920-925 MHz and microwave (MW) bands with high isolation. The novelty of the proposed integrated NFC and UHF RFID antenna scheme lies in the use of cloud technology to store real-time and archival data, in place of traditional servers. The integrated antenna scheme could achieve the NFC, UHF, and MW frequency bands, rendering it ideal for IoT applications.INDEX TERMS Near field communication (NFC), radio frequency identification (RFID), NFC antenna, ultra-high frequency (UHF) reader antenna, dual band antenna, Internet of Things (IoT).

show abstract

Compact design of UHF RFID and NFC antennas for mobile phones

Cited by 5 publications

References 17 publications

Near-Field HF-RFID and CMA-Based Circularly Polarized Far-Field UHF-RFID Integrated Tag Antenna

Near-Field HF-RFID and CMA-Based Circularly Polarized Far-Field UHF-RFID Integrated Tag Antenna

Antena "N" de alto desempenho para aplicações NFC

IoT-Linked Integrated NFC and Dual Band UHF/2.45 GHz RFID Reader Antenna Scheme

Contact Info

Product

Resources

About