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New nonlinear design tools for self-oscillating mixers

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3 Author(s)
S. ver Hoeye ; Dept. Ingenieria de Commun., Cantabria Univ., Santander, Spain ; L. Zurdo ; A. Suarez

New nonlinear design tools for self-oscillating mixers are presented here, with the aim to increase the designer's control over their behavior. The new tools enable fixing the self-oscillation frequency and selecting the optimum self-oscillation amplitude for maximum conversion gain. They can also be applied for the optimized design of harmonic self-oscillating mixers. Using bifurcation-theory concepts, it has been possible to increase the input-power range with self-oscillating-mixer operation. A self-oscillating mixer with 5.5 GHz input frequency has been designed and simulated obtaining very good agreement with the experimental results.

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:11 ,  Issue: 8 )