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dc.contributor.authorWang, Shih-Hsingen_US
dc.contributor.authorHung, Chung-Chihen_US
dc.date.accessioned2020-02-02T23:54:35Z-
dc.date.available2020-02-02T23:54:35Z-
dc.date.issued2019-12-01en_US
dc.identifier.issn1932-4545en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TBCAS.2019.2941090en_US
dc.identifier.urihttp://hdl.handle.net/11536/153544-
dc.description.abstractFor implantable frequency synthesizers, realizing ultra-low voltage (ULV) and low power in addition to meeting PLL targets, fast lock and low phase noise, poses a difficult challenge. This paper presents techniques to achieve PLL targets as well as ULV and low power in the same chip through the use of a regular CMOS technology node. A curvature-PFD technique achieves both faster locking and lower jitter compared with conventional techniques. A two-step switching technique substantially reduces the power consumption in current mirrors and reduce noise when switching from a charge pump. Leakage analysis and subthreshold-leakage-reduction technique reduce reference spur and jitter to the voltage-controlled oscillator (VCO). A dither technique randomizes and averages reference spurs. The proposed chip was implemented in 90-nm CMOS technology; the 0.35-V medical-band frequency synthesizer consumes 238-W power while generating output clock of 401.8 to 431.31-MHz and exhibiting a phase noise of -105.7 dBc/Hz at 1-MHz frequency offset with 20 s locking time.en_US
dc.language.isoen_USen_US
dc.subjectFrequency synthesizersen_US
dc.subjectPhase locked loopsen_US
dc.subjectJitteren_US
dc.subjectVoltage-controlled oscillatorsen_US
dc.subjectPhase noiseen_US
dc.subjectBandwidthen_US
dc.subjectPower demanden_US
dc.subjectImplantable applicationsen_US
dc.subjectlow poweren_US
dc.subjectMedRadioen_US
dc.subjectPLLen_US
dc.subjectultra-low-power electronicsen_US
dc.subjectultra low voltageen_US
dc.titleA 0.35-V 240-W Fast-Lock and Low-Phase-Noise Frequency Synthesizer for Implantable Biomedical Applicationsen_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TBCAS.2019.2941090en_US
dc.identifier.journalIEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMSen_US
dc.citation.volume13en_US
dc.citation.issue6en_US
dc.citation.spage1759en_US
dc.citation.epage1770en_US
dc.contributor.department電機資訊學士班zh_TW
dc.contributor.departmentUndergraduate Honors Program of Electrical Engineering and Computer Scienceen_US
dc.identifier.wosnumberWOS:000507321400060en_US
dc.citation.woscount0en_US
Appears in Collections:Articles