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Piecewise semi-analytical formulation for the analysis of coupled-oscillator systems

Abstract: A new simulation technique to obtain the synchronized steady-state solutions existing in coupled oscillator systems is presented. The technique departs from a semi-analytical formulation presented in previous works. It extends the model of the admittance function describing each individual oscillator to a piecewise linear one. This provides a global formulation of the coupled system, considering the whole characteristic of each voltage-controlled oscillator (VCO) in the array. In comparison with the previous local formulation, the new formulation significantly improves the accuracy in the prediction of the system synchronization ranges. The technique has been tested by comparison with computationally demanding circuit-level harmonic balance simulations in an array of Van der Pol-type oscillators and then applied to a coupled system of FET-based oscillators at 5 GHz, with a very good agreement with measurements.

 Autoría: Umpierrez P., Araña V., Sancho S.,

 Fuente: IEEE Transactions on Microwave Theory and Techniques, 2019, 67(6), 2259-2269

 Editorial: Institute of Electrical and Electronics Engineers Inc.

 Fecha de publicación: 01/06/2019

 Nº de páginas: 11

 Tipo de publicación: Artículo de Revista

 DOI: 10.1109/TMTT.2019.2912366

 ISSN: 0018-9480,1557-9670

 Proyecto español: TEC2014-60283-C3-(1/2)-R ; TEC2017-88242-C3-(1/2)-R

 Url de la publicación: https://doi.org/10.1109/TMTT.2019.2912366