Contribution à l'étude des architectures de radiocommunications à références d'horloges hautes fréquences : application des résonateurs BAW à la génération de fréquence de référence dans les systèmes de communication mobile

Abstract : This thesis deals with the gigahertz range reference frequency generation. In a first part, this document presents the design of a 500 MHz oscillator in a 65 nm CMOS process using a 2 GHz Bulk Acoustic Wave resonator. A digital frequency control is implemented using a switched capacitor bank in parallel to the resonator. The tuning range is up to 500 kHz with a minimum step of 200 Hz. The oscillator core uses a differential topology and is designed for low phase noise (-128 dBc/Hz at 100 kHz offset) at low power consumption (0.9 mW). It is followed by a low noise divider which provides a 500 MHz output with a phase noise of -139 dBc/Hz at 100 kHz offset from the carrier. In a second part, we consider a method for the calibration of a BAW based frequency reference. In fact, the frequency variations of a BAW oscillator against process, supply, temperature and aging effects make difficult its use as a frequency reference. We propose here a method based on Kalman filtering to identify with high precision a behavioral model of this BAW reference, thus enabling its use in an open loop frequency tuning. A precision of 0.4 ppm is achieved
Document type :
Theses
Other. Université Paris-Est, 2011. French. <NNT : 2011PEST1025>


https://tel.archives-ouvertes.fr/tel-00674583
Contributor : ABES STAR <>
Submitted on : Monday, February 27, 2012 - 4:27:40 PM
Last modification on : Saturday, July 5, 2014 - 3:13:27 AM

File

TH2011PEST1025_complete.pdf
fileSource_public_star

Identifiers

  • HAL Id : tel-00674583, version 1

Collections

Citation

Pierre Guillot. Contribution à l'étude des architectures de radiocommunications à références d'horloges hautes fréquences : application des résonateurs BAW à la génération de fréquence de référence dans les systèmes de communication mobile. Other. Université Paris-Est, 2011. French. <NNT : 2011PEST1025>. <tel-00674583>

Export

Share

Metrics

Consultation de
la notice

187

Téléchargement du document

77