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Morata M.,Escuela Universitaria Salesiana de Sarria | Gil I.,Polytechnic University of Catalonia | Fernandez-Garcia R.,Polytechnic University of Catalonia
Progress in Electromagnetics Research Symposium | Year: 2012

This paper presents a novel approach to design a parametric RF stop band pass filter based on Low Temperature Co-fired Ceramic (LTCC) Technology. The LTCC technology enables to miniaturize and development compact structures using not only the standard xy-planar circuit dimensions but also the z-height dimension. The proposed filters topologies are based on a stripline loaded with one or several complementary rings resonator (CSRRs). Specifically, a parametric study z-location of the stripline respect to the CSRRs is carried out in order to determine the optimum configurations operating in the Ku-band. Source


Morata M.,Escuela Universitaria Salesiana de Sarria | Gil I.,Polytechnic University of Catalonia | Fernandez-Garcia R.,Polytechnic University of Catalonia
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields | Year: 2011

This work describes progress toward designing and modeling reconfigurable band-pass filters based on RF microelectromechanical systems (RF-MEMS) metamaterials. A device consisting of a coplanar waveguide structure that combines complementary split ring resonators (CSRRs) and RF-MEMS varactor bridges, operating at K and Ka-band, is proposed. Several layouts have been designed and electromagnetically (EM) simulated. A full equivalent-circuit model for the description of the proposed structure, including transmission lines, RF-MEMS, subwavelength resonators and coupling parameters, is provided. A high degree of accuracy between EM simulations behavior and electrical model has been obtained. © 2011 John Wiley & Sons, Ltd. Source


Ruiz J.M.,Escuela Universitaria Salesiana de Sarria | Gil I.,Polytechnic University of Catalonia | Morata M.,Escuela Universitaria Salesiana de Sarria
Progress in Electromagnetics Research Symposium | Year: 2015

In this paper the electromagnetic emission of sub-wavelength EMI filter based on SRR and CSRR resonator has been analysed by means of near E and H fields simulation with the FDTD SEMCAD® software. The target bands are 900MHz (RFID UHF), 1.8GHz (GSM) and 2.4 GHz (ISM, Instrumentation, Scientific and Medical). A 3-stages/5-stages rejection band filter was designed and fabricated in a PCB. The preliminary simulation results show that the more significant emissions take place at higher frequencies, the 1.8 GHz GSM band and ISM band (2.4 GHz), and are located at the resonators' surface. Source


Fernandez-Garcia R.,Polytechnic University of Catalonia | Gil I.,Polytechnic University of Catalonia | Ruiz J.M.,Escuela Universitaria Salesiana de Sarria | Morata M.,Escuela Universitaria Salesiana de Sarria
Proceedings of EMC Europe 2011 York - 10th International Symposium on Electromagnetic Compatibility | Year: 2011

In this paper the switching noise of a CMOS ring oscillator has been analysed when their pFETs are subjected to negative bias temperature instability (NBTI). The impact of pFET under NBTI has been experimentally quantified whereas CMOS ring oscillator frequency and the switching noise has been analysed by means of electrical full-model simulation. The results show that the impact on the electromagnetic compatibility behaviour increases with NBTI wearout. © 2011 EMC Europe. Source


Ruiz J.M.,Escuela Universitaria Salesiana de Sarria | Fernandez-Garcia R.,Polytechnic University of Catalonia | Gil I.,Polytechnic University of Catalonia | Morata M.,Escuela Universitaria Salesiana de Sarria
Journal of Electronic Testing: Theory and Applications (JETTA) | Year: 2012

In this paper the power consumption and power integrity of a CMOS ring oscillator has been analysed when their pFETs are subjected to negative bias temperature instability (NBTI). The impact of pFET under NBTI has been experimentally quantified whereas CMOS ring oscillator power consumption and power integrity have been evaluated by means of electrical full-model simulation. The results show that power consumption is reduced and power integrity remains constant with NBTI wearout. © 2012 Springer Science+Business Media New York. Source

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