Wide range fully integrated VCO with new cells-based varactor

M Marrero-Martin, B Gonzalez, J Garcia… - … Journal of Electronics, 2012 - Taylor & Francis
This article presents a wide range inductance–capacitance voltage controlled oscillator
(VCO) with a unit cells-based varactor. The unit cell represents the minimum possible …

Coupled varactor based on PN junction and accumulation MOS for RF applications

J García, M Marrero-Martín, B González… - Proceedings of the …, 2011 - ieeexplore.ieee.org
In this work varactors based on pn-junction have been connected in parallel with
accumulation mode MOS ones, in order to increase the final capacitance without losing the …

Effect of separation and depth of N+ diffusions in the quality factor and tuning range of PN varactors

M Marrero-Martín, T Szydzik, J Garcia… - VLSI Circuits and …, 2011 - spiedigitallibrary.org
Variable capacitors, the varactors, are key components in many types of radiofrequency
circuits and thus high quality varactors are essential to achieve high quality factors in these …

Circuit models for PN integrated varactors

M Marrero-Martín, J García, B González… - Proceedings of the …, 2011 - ieeexplore.ieee.org
This paper compares different circuit models describing the performance of integrated
varactors, which are designed, manufactured, measured and simulated with a 0.35 μm …

Aportaciones al diseño de varactores integrados en tecnologías de bajo coste para aplicaciones en radiofrecuencia

ML Marrero Martín - 2012 - accedacris.ulpgc.es
Esta tesis se centra en la búsqueda de nuevas estructuras para varactores de unión PN,
que mejoren el factor de calidad y el rango de sintonización de los existentes en las …