@conference{10902/10112, year = {2014}, url = {http://hdl.handle.net/10902/10112}, abstract = {A two-level simulation methodology for coupled-oscillator systems is presented. The inner level corresponds to the harmonic-balance analysis of the elementary oscillator in free-running regime, so as to obtain a one-port reduced-order model. The outer level corresponds to the analysis of the coupled system, deriving a formulation that explicitly relates the oscillation-frequency deviation and the amplitude and phase distributions to magnitudes characterizing the coupling network and oscillator elements. A stability analysis based on this formulation is also carried out obtaining a mathematical condition that determines the stable phase-shift interval. The formulation provides valuable insight into the system behavior and allows the derivation of realistic criteria for an optimum coupled-system performance. The two-level analysis has been extended to injection-locked systems, which enables an investigation of the impact of the number of oscillator elements and relative position of the injection signal on the locking bandwidth.}, organization = {This work was supported by the Spanish Ministry of Economy and Competitiveness under Contract TEC2011-29264-C03-01.}, publisher = {IEEE}, publisher = {International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave and Terahertz Applications (NEMO), Pavia, Italy, 2014, 94-97}, title = {Coupled-oscillator systems: efficient simulation with harmonic-balance based oscillator models}, author = {Suárez Rodríguez, Almudena and Ramírez Terán, Franco Ariel and Sancho Lucio, Sergio Miguel}, }