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Memorias de investigación
Research Publications in journals:
Thermodynamical Phase Noise in Oscillators Based on L-C Resonators
Year:2012
Research Areas
  • Electronics engineering
Information
Abstract
Using a new Admittance-based model for electrical noise able to handle Fluctuations and Dissipations of electrical en-ergy, we explain the phase noise of oscillators that use feedback around L-C resonators. We show that Fluctuations produce the Line Broadening of their output spectrum around its mean frequency f0 and that the Pedestal of phase noise far from f0 comes from Dissipations modified by the feedback electronics. The charge noise power 4FkT/R C2/s that disturbs the otherwise periodic fluctuation of charge these oscillators aim to sustain in their L-C-R resonator, is what creates their phase noise proportional to Leeson?s noise figure F and to the charge noise power 4kT/R C2/s of their ca-pacitance C that today?s modelling would consider as the current noise density in A2/Hz of their resistance R. Linked with this (A2/Hz?C2/s) equivalence, R becomes a random series in time of discrete chances to Dissipate energy in Thermal Equilibrium (TE) giving a similar series of discrete Conversions of electrical energy into heat when the reso-nator is out of TE due to the Signal power it handles. Therefore, phase noise reflects the way oscillators sense thermal exchanges of energy with their environment.
International
Si
JCR
No
Title
Scientific Research Publishing. Circuits and Systems
ISBN
2153-1285
Impact factor JCR
0
Impact info
Volume
3
10.4236/cs.2012.31009
Journal number
From page
61
To page
71
Month
ENERO
Ranking
Participants
  • Autor: Javier Malo Gomez (UPM)
  • Autor: Jose Ignacio Izpura Torres (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Microsistemas y Materiales Electrónicos
  • Centro o Instituto I+D+i: Centro de Materiales y Dispositivos Avanzados para Tecnologías de Información y Comunicaciones
  • Departamento: Sistemas Electrónicos y de Control
  • Departamento: Infraestructura, Sistemas Aeroespaciales y Aeropuertos
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