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Cited 5 time in webofscience Cited 6 time in scopus
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dc.contributor.authorJeon C.-
dc.contributor.authorKoo J.-
dc.contributor.authorLee K.-
dc.contributor.authorLee M.-
dc.contributor.authorKim S.-
dc.contributor.authorShin S.-
dc.contributor.authorHahn S.K.-
dc.contributor.authorSim J.-
dc.date.available2020-02-27T00:52:56Z-
dc.date.created2020-01-21-
dc.date.issued2020-04-
dc.identifier.issn0018-9200-
dc.identifier.urihttps://oasis.postech.ac.kr/handle/2014.oak/101239-
dc.description.abstractThis article presents a controller IC for smart contact lens (SCL). For wireless telemetry, we propose a transmitter supporting dual-mode operations with a single external loop antenna. In the wireless-powered backscattering load-shift keying (LSK) mode, the transmitter is configured to use the antenna as an ${L}$ for magnetic resonance coupling. The transmitter switches its configuration to be an active LC oscillator circuit in the RF-radiated transmission mode. To suppress the average power consumption, a 0.2% duty cycling is applied with a controlled timing schedule while minimizing static power consumption in the sleep mode. To reduce the effect of instantaneous discharging, the period of data transmission is shortened by transmitting data with a higher rate. The designed IC is fabricated using 0.18- $\mu \text{m}$ CMOS. For in vitro verifications in both modes, an SCL is implemented by integrating the IC, a glucose sensor, a thin-film battery, a loop antenna, and a supply-regulating capacitor. The IC achieves a power consumption of 143 nW with an input dynamic range of 89 dB.-
dc.languageEnglish-
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC-
dc.titleA Smart Contact Lens Controller IC Supporting Dual-Mode Telemetry With Wireless-Powered Backscattering LSK and EM-Radiated RF Transmission Using a Single-Loop Antenna-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.bibliographicCitationIEEE JOURNAL OF SOLID-STATE CIRCUITS, v.55, no.4, pp.856 - 867-
dc.identifier.wosid000522446300003-
dc.citation.endPage867-
dc.citation.number4-
dc.citation.startPage856-
dc.citation.titleIEEE JOURNAL OF SOLID-STATE CIRCUITS-
dc.citation.volume55-
dc.contributor.affiliatedAuthorJeon C.-
dc.contributor.affiliatedAuthorKoo J.-
dc.contributor.affiliatedAuthorLee K.-
dc.contributor.affiliatedAuthorLee M.-
dc.contributor.affiliatedAuthorKim S.-
dc.contributor.affiliatedAuthorHahn S.K.-
dc.contributor.affiliatedAuthorSim J.-
dc.identifier.scopusid2-s2.0-85077273174-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.type.docTypeArticle-
dc.subject.keywordPlusBackscattering-
dc.subject.keywordPlusBiomedical engineering-
dc.subject.keywordPlusContact lenses-
dc.subject.keywordPlusElectric power utilization-
dc.subject.keywordPlusGlucose sensors-
dc.subject.keywordPlusIntegrated circuits-
dc.subject.keywordPlusLoop antennas-
dc.subject.keywordPlusMagnetic resonance-
dc.subject.keywordPlusOscillators (electronic)-
dc.subject.keywordPlusTelemetering equipment-
dc.subject.keywordPlusTiming circuits-
dc.subject.keywordPlusWireless telemetry-
dc.subject.keywordPlusLens antennas-
dc.subject.keywordPlusTransmitters-
dc.subject.keywordPlusBiomedical diagnosis-
dc.subject.keywordPlusDual-mode operation-
dc.subject.keywordPlusMagnetic resonance couplings-
dc.subject.keywordPlussmart contact lens (SCL)-
dc.subject.keywordPlusStatic power consumption-
dc.subject.keywordPlusUltra low power-
dc.subject.keywordPlusWireless sensor-
dc.subject.keywordAuthorBiomedical diagnosis-
dc.subject.keywordAuthorminiaturized healthcare-
dc.subject.keywordAuthorsmart contact lens (SCL)-
dc.subject.keywordAuthorultra-low-power telemetry-
dc.subject.keywordAuthorwireless sensor.-

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한세광HAHN, SEI KWANG
Dept of Materials Science & Enginrg
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