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Simulation method for complex multivalued curves in injection-locked oscillators

Abstract: A new methodology is presented for the efficient harmonic-balance simulation of injection-locked oscillators with complex multivalued and disconnected curves. It is illustrated through its application to high-order subharmonically injection-locked oscillators. A graphical technique is applied to analyze the oscillator-phase sensitivity with respect to the input signal, required for the injection-locked operation. The intricate synchronized-solution curves are obtained with the new method, which enables a global exploration of all the coexistent periodic solutions. These solutions can belong to different curve sections, in a multivalued response, or to disconnected synchronization curves. The method is based on the calculation of a series of phase-dependent outer-tier admittance functions, which provide the oscillator response to the injection signal. Coexistent solutions are simultaneously obtained through a contour-plot intersection, without the need for continuation techniques. The method is illustrated through application to an oscillator synchronized to low-frequency sinusoidal signal by means of a nonlinear-transmission line. The analysis and design techniques have been successfully validated through comparison with independent simulations and measurements.

 Autoría: Hernández S., Pontón M., Suárez A.,

 Fuente: IEEE Transactions on Microwave Theory and Techniques, 2017, 65(11), 4046-4062

 Editorial: Institute of Electrical and Electronics Engineers Inc.

 Fecha de publicación: 01/11/2017

 Nº de páginas: 17

 Tipo de publicación: Artículo de Revista

 DOI: 10.1109/TMTT.2017.2703648

 ISSN: 0018-9480,1557-9670

 Proyecto español: TEC2014-60283-C3-1-R

 Url de la publicación: https://doi.org/10.1109/TMTT.2017.2703648