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

Romputtal, Adisak; Phongcharoenpanich, Chuwong

doi:10.1109/access.2019.2958257

Cited by 41 publications

(30 citation statements)

References 37 publications

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“…The antenna has a very low profile with multiple bands. Although, it has the narrow operating bandwidth, outnumbers 6,9,13,20 at the first resonating band. Further, compared to the other antennas except, 22,28 the proposed antenna has a very low metallic foot-print on the substrate as shown in column VI which is needed for the flexible conformal antenna design.…”

Section: State Of the Art Comparisonmentioning

confidence: 99%

“…For the IoT infrastructure, an antenna designed on a 160 Â 100 Â 1.6 mm 3 FR-4 substrate meets the near-field communication (NFC) and the radio frequency identification (RFID) operational requirements over 0.88 to 0.96 GHz and 2.28 to 2.57 GHz bands. 9 The necessities to design the flexible antennas for the IoT applications have also been experienced in Refs. 10-12.…”

Section: Introductionmentioning

confidence: 99%

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Nearly omni‐directional compressed multiband flexible and conformal dipole antenna

Singh

Jha

Sharma

2021

Int J RF Mic Comp-Aid Eng

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A physically compressed, multiband dipole antenna on a partially optically transparent Acrylic sheet flexible substrate material is designed. The multiband operation is achieved by exploiting the higher-order resonating modes.Due to the use of the flexible substrate, and the less metallic footprint of the radiator, the antenna is flexible and conformal with the nearly omnidirectional radiation characteristic in one of the principal plane. With an S 11 = À10 dB impedance matching criterion, the antenna has a measured 0.76 to 0.85 GHz, 2.39 to 2.50 GHz, 2.83 to 2.88 GHz, and 6.09 to 6.5 GHz operating bandwidth.It also has a wide À6 dB measured impedance bandwidth from 0.74 to 0.87 GHz, 2.12 to 2.19 GHz, 2.32 to 2.52 GHz, 2.70 to 3.0 GHz, and 5.9 to 6.7 GHz. The specific absorption ratio (SAR) of the conformal antenna has been studied for the collar garment applications. The planar and conformal antennas have been fabricated and investigated for the nearly-omnidirectional radiation pattern. The simulated and measured radiation pattern shows the nearly omnidirectional pattern for a different radius of curvature. The simulated and measured results are in agreement with each other with a few exceptions. The antenna is suitable for the internet of things (IoT), body area networking (BAN), wireless fidelity (Wi-Fi), and smart city applications.

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Section: State Of the Art Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nearly omni‐directional compressed multiband flexible and conformal dipole antenna

Singh

Jha

Sharma

2021

Int J RF Mic Comp-Aid Eng

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“…Near-field HF and far-field UHF functionalities have previously been integrated in a single device for Radio Frequency Identification (RFID) applications [14]- [17]. Using dual-mode near/far-field antennas, IoT devices can be powered using magnetic resonance (MR) power transfer as well as farfield radiative WPT.…”

Section: Introductionmentioning

confidence: 99%

Broadband Compact Substrate-Independent Textile Wearable Antenna for Simultaneous Near- and Far-Field Wireless Power Transmission

Wagih

Komolafe

Weddell

et al. 2022

IEEE Open J. Antennas Propag.

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Despite an increasing interest in wearable wireless power transmission (WPT), until now, wearable antennas have been unable to simultaneously harvest from near-field resonant and far-field radiative WPT. Here, a dual-port antenna is proposed, integrating an inductive coil with a broadband monopole for near-and far-field wearable WPT. The coil acts simultaneously as a High Frequency (HF) near-field power receiver and an Ultra-High Frequency (UHF) resonator, enabling the miniaturization of the enclosed broadband monopole, both fabricated using all-textile conductors. On-body, the antenna maintains a 10 dB return loss over a measured 135% fractional bandwidth while maintaining compactness (0.312×0.312λ 2 ). The antenna is substrate-independent and is demonstrated on two textile substrates with different dielectric properties and thicknesses. In far-field mode, the rectenna maintains over 40% efficiency from sub-1 µW/cm 2 power densities. In the near-field, a WPT efficiency up to 80% can be achieved. The simulated Specific Absorption Rate (SAR) shows up to 40 and 20 dBm power reception for HF and UHF operation, respectively, without exceeding the 1.7 W/kg limit. The far-field wearable rectenna is demonstrated powering a Bluetooth Low Energy node using a BQ25504 DC-DC converter from a best-in-class low power density of 0.88 and 0.55 µW/cm 2 on-body and in-space, respectively.

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“…As technology rapidly grows, modern wireless systems (IoT devices) exhibit various functions and require operation at more than one frequency without increasing the antenna size [7][8][9][10]. In the literature, different shapes of the single-band and multi-band monopole antennas have been developed, such as H-shaped [11], circular-shaped [12], U-shaped open stub [13], M-shaped open stub [14], L-shape with coupled branch strip [9], L-shaped stub folded into U-shaped [4], D-shaped [15], U-shaped with rectangular patch inside [16], square spiral loop [17], tapered rectangular patch antenna [5], and symmetric bow-tie circular patch antenna [18]. Dual-band or multi-band operations can be obtained by etching some slots either in the radiating elements [3,[18][19][20][21][22], in the ground plane of the antennas [23][24][25][26], or both [9,27,28].…”

Section: Introductionmentioning

confidence: 99%

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

et al. 2021

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This paper presents novel low-cost single- and dual-band microstrip patch antennas. The proposed antennas are realized on a square microstrip patch etched symmetrically with four slots. The antenna is designed to have low cost and reduced size to use in Internet of things (IoT) applications. The antennas provide a reconfigurable architecture that allows operation in different wireless communication bands. The proposed structure can be adjusted to operate either in single band or in dual-band operation. Two prototypes are implemented and evaluated. The first structure works at a single resonance frequency (f1 = 2.4 GHz); however, the second configuration works at two resonance frequencies (f1 = 2.4 GHz and f2 = 2.8 GHz) within the same size. These antennas use a low-cost FR-4 dielectric substrate. The 2.4 GHz is allotted for the industrial, scientific, and medical (ISM) band, and the 2.8 GHz is allocated to verify the concept and can be adjusted to meet the user’s requirements. The measurement of the fabricated antennas closely matches the simulated results.

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

Cited by 41 publications

References 37 publications

Nearly omni‐directional compressed multiband flexible and conformal dipole antenna

Nearly omni‐directional compressed multiband flexible and conformal dipole antenna

Broadband Compact Substrate-Independent Textile Wearable Antenna for Simultaneous Near- and Far-Field Wireless Power Transmission

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

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