Oscillation modes in free-running oscillators loaded with multi-resonant networks

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URI: http://hdl.handle.net/10902/11547
ISBN: 978-1-5090-0699-1
ISBN: 978-1-5090-0698-4
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Autoría
Ramírez Terán, Franco ArielAutoridad Unican; Suárez Rodríguez, AlmudenaAutoridad Unican; Sancho Lucio, Sergio MiguelAutoridad Unican
Fecha
2016
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© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Publicado en
IEEE MTT-S International Microwave Symposium (IMS), San Francisco, 2016, 1327-1330
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IEEE
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Palabras clave
Oscillation modes
Stability
Bifurcation
Resumen/Abstract
An in-depth investigation of oscillation modes in free-running oscillators loaded with multi-resonance networks is presented. It focuses on the mechanisms leading to the coexistence of stable oscillation modes, which may give rise to uncertainty in the physical behaviour. The multiple periodic and quasi-periodic solutions are detected and related to the stability properties of the dc solution and each of the periodic modes. Two different types of Hopf-bifurcation loci enable a global understanding of the circuit operation. The investigation is initially carried out with an analytical formulation and then extended to harmonic-balance simulations. The results have been experimentally validated through their application to a HEMT-based cross-coupled oscillator, at 0.65 and 2.4 GHz.
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