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Ultra Low Power Frequency Synthesizer

Authors: Nielsen, Cole;

Ultra Low Power Frequency Synthesizer

Abstract

En strøm- og jitter FOM state of art integer-N all digital faselåst loop (ADPLL) frekvenssynteser implementert i en kommersielt tilgjengelig 22nm FD-SOI-prosess blir presentert i denne artikkelen. Oppnådd var et strømforbruk på 95 μW med 12 oscillatorfaser ved 816 MHz, et jitter FOM på -225 dB og et aktivt område på 0,00365 mm^2. Dette ble oppnådd gjennom vekt på kraftreduserende arkitektoniske valg for anvendelse på WUR-er (wake up receivers), ved bruk av lav kompleksitet, skjevhet og referansefrie kretsløp. Inkludert er en ny, pseudodifferensiell spenningsstyrt ringoscillator som bruker FD-SOI-bakgater for å implementere både frekvensjustering og differensialatferd. Denne spenningsstyrte oscillatoren oppnår høyfrekvensjusteringsforsterkningslinearitet med inngangsområde for skinne til skinne, mens den ikke bruker noen statisk strømforsyning. Den foreslåtte oscillatoren muliggjør 2.448 GHz IQ-prøvetaking gjennom oversampling ved 1/3 subharmonien (816 MHz). Kapasitive DAC-er brukes til å gi oscillatoren digital kontroll med minimum effektuttrekking. En lav-kompleksitets bang-bangfasedetektor (BBPD) og et helt digitalt proporsjonalt-integrert (PI) løkkefilter med delingsfri drift implementerer de gjenværende delene av PLL. Videre introduseres en matematisk modell angående den nye oscillatoren, en teori for fasestøyoptimalisering presenteres for PI-loop-filter-design i BBPD-PLL-er, og teori om bestemmelse av DAC-oppløsning er også skissert. Til slutt etableres en teoretisk grense for oppnåelig PLL FOM-jitter i den foreslåtte designen.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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Green