Thermodynamical Phase Noise in Oscillators Based on L-C Resonators (Foundations)

Izpura Torres, José Ignacio y Malo Gomez, Javier (2012). Thermodynamical Phase Noise in Oscillators Based on L-C Resonators (Foundations). "Circuits and Systems", v. 3 (n. 1); pp. 48-60. ISSN 2153-1285. https://doi.org/10.4236/cs.2012.31008.

Descripción

Título: Thermodynamical Phase Noise in Oscillators Based on L-C Resonators (Foundations)
Autor/es:
  • Izpura Torres, José Ignacio
  • Malo Gomez, Javier
Tipo de Documento: Artículo
Título de Revista/Publicación: Circuits and Systems
Fecha: Enero 2012
Volumen: 3
Materias:
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Ingeniería Electrónica
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Using a new Admittance-based model for electrical noise able to handle Fluctuations and Dissipations of electrical energy, 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 capacitance 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 resonator 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

Más información

ID de Registro: 10852
Identificador DC: http://oa.upm.es/10852/
Identificador OAI: oai:oa.upm.es:10852
Identificador DOI: 10.4236/cs.2012.31008
URL Oficial: http://www.scirp.org/journal/PaperInformation.aspx?paperID=16624
Depositado por: Memoria Investigacion
Depositado el: 16 May 2012 08:45
Ultima Modificación: 20 Abr 2016 19:03
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