Nonlinear analysis of an injection-locked oscillator coupled to an external resonator

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URI: http://hdl.handle.net/10902/25462
ISSN: 1531-1309
ISSN: 1558-1764
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Autoría
Ardila Acuña, Víctor ÁngelAutoridad Unican; Ramírez Terán, Franco ArielAutoridad Unican; Suárez Rodríguez, AlmudenaAutoridad Unican
Fecha
2022-06
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Publicado en
IEEE Microwave and Wireless Components Letters, 2022, 32(6), 740-743
Editorial
Institute of Electrical and Electronics Engineers Inc.
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Palabras clave
Bifurcation
Inductive coupling
Injection locking
Oscillator
Resumen/Abstract
This work investigates an injection-locked power oscillator inductively coupled to an external resonator for wireless power transfer. The system allows a high transfer efficiency, while ensuring a constant oscillation frequency versus the coupling factor, unlike free-running implementations. An analytical formulation provides insight into the impact of the coupling factor on the locked-operation ranges. Two types of qualitative behavior, delimited by a codimension-two bifurcation, are distinguished. The investigation is extended to a Class-E oscillator at 13.56 MHz, analyzed with a new harmonic balance (HB) method that provides the family of locked-solution curves in a single simulation. Very good agreement is obtained with the measurement results.
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