Robustly Operating: Passive Near-Field Communication Systems in Metal Environments

Grosinger, Jasmin

doi:10.1109/mmm.2022.3233508

Cited by 5 publications

(2 citation statements)

References 38 publications

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“…Additionally, the misalignment of RX and TX has to be investigated. Coil misalignment leads to a change in the coupling coefficient [26], which can be easily modeled by the presented solution [4]. However, misalignments will also lead to a change in capacitive coupling between the close-by coils.…”

Section: Discussionmentioning

confidence: 99%

“…For wireless charging, handheld devices typically use specific wireless power transfer (WPT) standards, e.g., the Qi standard [3], which transmit energy via magnetic resonant coupled devices at roughly 100 kHz. Mobile payments are typically realized via near-field communication (NFC), which transmits data via magnetic resonant coupled devices at 13.56 MHz [4]. WPT and NFC systems integrated into chargers (transmitter, TX) and handheld devices (receiver, RX) might impair each other's functionalities when coexisting or interoperating [5].…”

Section: Introductionmentioning

confidence: 99%

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Communication Quality Analysis for WPT and NFC Systems via Broadband Equivalent Circuit Models

Fischbacher,

Lopera,

Pommerenke

et al. 2024

Antennas Wirel. Propag. Lett.

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This letter presents a novel full-system communication quality analysis of a wireless power transfer (WPT) and nearfield communication (NFC) system. The analysis is conducted via a thoroughly verified broadband equivalent circuit (EC) model of a WPT and NFC system prototype. Such an EC model can accelerate the iterative system design process for systems with interoperating or coexisting WPT and NFC interfaces. The EC model is verified by measurements of a prototype. EC model and measurements agree excellently by comparing impedance parameters, single-sided frequency spectra, and the signal constellation diagram of the NFC tag-to-reader communication signal. The NFC communication quality analysis shows a severe impairment of the NFC tag-to-reader communication by the WPT system.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%