Memorias de investigación
Artículos en revistas:
Thermodynamical Phase Noise in Oscillators Based on L-C Resonators
Año:2012
Áreas de investigación
  • Industria electrónica
Datos
Descripción
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.
Internacional
Si
JCR del ISI
No
Título de la revista
Scientific Research Publishing. Circuits and Systems
ISSN
2153-1285
Factor de impacto JCR
0
Información de impacto
Volumen
3
DOI
10.4236/cs.2012.31009
Número de revista
Desde la página
61
Hasta la página
71
Mes
ENERO
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • 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