María Elena De Cos

Dr. María Elena De Cos

Electrical, Electronic, Computers and Systems Engineering Departament, University of Oviedo, 33204 Gijón, Spain
orcid

Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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4 August 2009 in IEEE Antennas and Wireless Propagation Letters
Verified
Journal Article
Closed access
María Elena De CosMaría Elena De Cos
María Elena De Cos
FLFernando Las-Heras
Fernando Las-Heras
MFM. Franco
M. Franco
A novel design of planar artificial magnetic conductor (AMC) based on a frequency-selective surface (FSS) for frequencies below 1 GHz is presented. A discussion about design parameters and the influence of dielectric substrate permittivity in the operating band and the operating bandwidth is presented. The discussion is supported by a finite element method (FEM) simulation.

28 August 2013 in IEEE Antennas and Propagation Magazine
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Journal Article
Closed access
María Elena De CosMaría Elena De Cos
María Elena De Cos
FLFernando Las-Heras
Fernando Las-Heras
A flexible, wearable CPW-fed monopole antenna, based on aluminum-metallized polypropylene (PP), is presented. Its low cost, light weight, and moisture robustness make it proper for 2.45 GHz and 5.8 GHz dual-band RFID applications. A polypropylene sample was electromagnetically characterized in terms of relative dielectric permittivity and loss tangent in order to design the antenna. The performance of the polypropylene-based antenna in both simulation and measurement was compared to the performance of a commercial rigid-dielectric substrate-based antenna with the same geometry. The robustness to moisture of the manufactured polypropylene-based antenna was also tested.

5 February 2013 in IEEE Antennas and Wireless Propagation Letters
Verified
Journal Article
Closed access
RHR. C. Hadarig
R. C. Hadarig
María Elena De CosMaría Elena De Cos
María Elena De Cos
FLFernando Las-Heras
Fernando Las-Heras
The design of a novel miniaturized artificial magnetic conductor (AMC) using interdigital capacitors is presented. The operation of the AMC is evaluated using finite element method (FEM) simulations. A prototype is manufactured and characterized based on reflection coefficient phase in an anechoic chamber. The performance of the AMC unit cell for both normal and oblique incidence is also studied.

13 June 2011 in IEEE Antennas and Wireless Propagation Letters
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Journal Article
Closed access
María Elena De CosMaría Elena De Cos
María Elena De Cos
YLYuri Alvarez Lopez
Yuri Alvarez Lopez
FLFernando Las-Heras
Fernando Las-Heras
The characteristics of a novel broadband artificial magnetic conductor (AMC) design based on a unilayer FSS with hexagonal unit cells and without via-holes are presented by means of FEM simulations and measurements in an anechoic chamber. A comparison between this novel design and other well-known designs is carried out in terms of AMC operation bandwidth. The designed structure shows polarization-angle independence, and its angular stability under oblique incidence is also analyzed based on measurements.

2 February 2010 in IEEE Antennas and Wireless Propagation Letters
Verified
Journal Article
Closed access
María Elena De CosMaría Elena De Cos
María Elena De Cos
YLYuri Alvarez Lopez
Yuri Alvarez Lopez
RHRamona Cosmina Hadarig
Ramona Cosmina Hadarig
FLFernando Las-Heras
Fernando Las-Heras
The design of a novel SHF-band uniplanar artificial magnetic conductor (AMC) is presented. A prototype is manufactured and characterized based on reflection coefficient phase. The designed prototype shows broad AMC operation bandwidth and polarization angle independency. Its angular margin when operating under oblique incidence is also tested. The results are supported by finite element method (FEM) simulations and measurements in an anechoic chamber.

20 August 2013 in IEEE Antennas and Wireless Propagation Letters
Verified
Journal Article
Closed access
RHRamona Cosmina Hadarig
Ramona Cosmina Hadarig
María Elena De CosMaría Elena De Cos
María Elena De Cos
FLFernando Las-Heras
Fernando Las-Heras
The design of a novel dipole-artificial magnetic conductor (AMC) combination for UHF radio frequency identification (RFID) band, showing proper performance in the proximity of metallic surfaces, surrounding a metallic can and being conformed around the human wrist is presented. The prototypes of the dipole antenna alone and dipole antenna combined with the AMC are manufactured using laser micromachining. To the authors' knowledge , this is the first letter presenting the actual functionality of antennas and AMCs at UHF RFID frequency in order to insulate the user's body from undesired exposure to electromagnetic radiation. The experimental results of the manufactured prototypes in terms of return loss and radiation pattern measurements in an anechoic chamber are shown for comparison.