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Accurate, grid-robust and versatile combined-field discretization for the electromagnetic scattering analysis of perfectly conducting targets
(2020-04-15)
Article
Restricted access - publisher's policyRecent implementations of the Electric-Field Integral Equation (EFIE) for the electromagnetic scattering analysis of perfectly conducting targets rely on the electric current expansion with the monopolar-RWG basis functions, ... -
Improving the accuracy of the adaptive cross approximation with a convergence criterion based on random sampling
(2020-07-27)
Article
Open AccessThe accuracy of the Adaptive Cross Approximation (ACA) algorithm, a popular method for the compression of low rank matrix blocks in Method of Moment computations, is sometimes seriously compromised by unpredictable errors ... -
Hybrid massive MIMO for urban V2I: Sub-6 GHz vs mmWave performance assessment
(Institute of Electrical and Electronics Engineers (IEEE), 2020-03)
Article
Open AccessThe relevance of vehicle communications in next-generation networks entails the necessity of studying their performance in the framework of upcoming massive architectures. In this regard, a study of the wireless channel ... -
Nested fast adaptive cross approximation algorithm for solving electromagnetic scattering problems
(IEEE Microwave Theory and Techniques Society, 2020-09-28)
Article
Open AccessIn this paper, a Nested Fast Adaptive Cross Approximation (NFACA) algorithm is presented to accelerate the solution of electromagnetic scattering problems. It is based on the Fast Adaptive Cross Approximation (FACA) and ... -
Wireless sensing of concrete setting process
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-21)
Article
Open AccessAn RFID-based wireless system to measure the evolution of the setting process of cement-based materials is presented in this paper. The system consists of a wireless RFID temperature sensor that works embedded in concrete, ... -
Terahertz frequency-scaled differential imaging for Sub-6 GHz vehicular antenna signature analysis
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-02)
Article
Open AccessThe next generation of connected and autonomous vehicles will be equipped with high numbers of antennas operating in a wide frequency range for communications and environment sensing. The study of 3D spatial angular responses ... -
3D-printed UHF-RFID tag for embedded applications
(Institute of Electrical and Electronics Engineers (IEEE), 2020-08-10)
Article
Open AccessThis paper presents the design, manufacture and characterization of a novel 3D passive UHF-RFID tag for embedded applications. The prototype is fabricated using additive manufacturing techniques: 3D printing and copper ... -
3D beamsteering low complexity reconfigurable multilevel antenna
(2020-04)
Article
Open AccessA low-complexity reconfigurable antenna (RA) capable of steering its beam into nine different directions corresponding to ¿={-42°,0°,42°} in the ¿={25°,0°,155°} planes, and ¿=±25° in the ¿=90° plane, using a reduced number ... -
Enhanced discretization of surface integral equations for resonant scattering analysis of sharp-edged plasmonic nanoparticles
(American Physical Society (APS), 2019-04-10)
Article
Open AccessThe surface integral equation (SIE) method, discretized with the method of moments, is a well-established methodology for the scattering analysis of subwavelength plasmonic nanoparticles. SIEs are usually discretized with ... -
Linear and Circular UWB Millimeter-Wave and Terahertz Monostatic Near-Field Synthetic Aperture Imaging
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-03-10)
Article
Open AccessMillimeter-wave and terahertz frequencies offer unique characteristics to simultaneously obtain good spatial resolution and penetrability. In this paper, a robust near-field monostatic focusing technique is presented and ... -
Error vector magnitude, intermodulation and radiation characteristics of a bandwidth and pattern reconfigurable antenna
(2019-10)
Article
Open AccessThis letter presents the error vector magnitude (EVM), intermodulation (IM), and radiation performances of a reconfigurable antenna capable of varying its bandwidth between 3.4-3.6 and 3.1-3.9 GHz bands, and steering its ... -
Debye frequency-extended waveguide permittivity extraction for high complex permittivity materials. Concrete setting process characterization
(2019-12)
Article
Open AccessA waveguide with central frequency 868 MHz is used in transmission/reflection operation regime to accurately measure the behaviour of the complex permittivity of high complex permittivity granular materials and it has been ...
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