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Mostrando ítems 21-30 de 432
Artículo
Left-handed-media simulation and transmission of EM waves in subwavelength split-ring-resonator-loaded metallic waveguides
(American Physical Society, 2002-10-28)
At microwave frequencies, hollow metallic waveguides behave in certain aspects as a “one-dimensional plasma.” This feature will be advantageously used for simulating the propagation of electromagnetic (EM) waves in left-handed ...
Artículo
Disorder Effects in One-Dimensionally Periodic Extraordinary Transmission Structures
(MDPI, 2022)
Extraordinary transmission structures show promising capabilities for highly selective filters in both frequency and angle of incidence. However, their realistic response once manufacturing limitations are taken into account ...
Artículo
The Diverse Meteorology of Jezero Crater over the First 250 Sols of Perseverance on Mars
(Springer Nature, 2023)
NASA’s Perseverance rover’s Mars Environmental Dynamics Analyzer is collecting data at Jezero crater, characterizing the physical processes in the lowest layer of the Martian atmosphere. Here we present measurements from ...
Artículo
Enhanced Linearity in FD-SOI CMOS Body-Input Analog Circuits - Application to Voltage-Controlled Ring Oscillators and Frequency-Based sigma Delta ADCs
(Institute of Electrical and Electronics Engineers, 2020)
Abstract— This paper investigates the use of the body terminal of MOS transistors to improve the linearity of some key circuits used to implement analog and mixed-signal circuits integrated in Fully Depleted Silicon on ...
Artículo
Large-scale high-temperature solar energy storage using natural minerals
(Elsevier, 2017)
The present work is focused on thermochemical energy storage (TCES) in Concentrated Solar Power (CSP) plants by means of the Calcium-Looping (CaL) process using cheap, abundant and non-toxic natural carbonate minerals. CaL ...
Artículo
A 2-MS/s, 11.22 ENOB, Extended Input Range SAR ADC With Improved DNL and Offset Calculation
(Institute of Electrical and Electronics Engineers, 2018)
Abstract— A 12-bit successive approximation register analogto-digital converter (ADC) with extended input range is presented. Employing an input sampling scaling technique, the presented ADC can digitize the signals with ...
Artículo
Experimental verification of extraordinary transmission without surface plasmons
(American Institute of Physics, 2009)
This letter provides an experimental demonstration of extraordinary transmission in a closed waveguide system loaded with an electrically small diaphragm. This is a situation where the standard surface plasmon polariton ...
Artículo
CO2 capture performance of Ca-Mg acetates at realistic Calcium Looping conditions
(Elsevier BV, 2017)
The Calcium Looping (CaL) process, based on the cyclic carbonation/calcination of CaO, has emerged in the last years as a potentially low cost technique for CO2capture at reduced energy penalty. In the present work, natural ...
Artículo
Artículo
High-Speed and Low-Cost Implementation of Explicit Model Predictive Controllers
(Institute of Electrical and Electronics Engineers, 2019)
This paper presents a new form of piecewise-affine (PWA) solution, referred to as PWA hierarchical (PWAH), to approximate the explicit model predictive control (MPC) law, achieving a very rapid control response with the ...