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Publications associées (202)
Nonreciprocity in Uniform Time-Varying Materials Using Spatial Dispersion
Mohammad Sajjad Mirmoosa, Xiao Wang
Conventionally, nonreciprocity in time-varying systems is achieved by exploiting both temporal and spatial modulations. In this paper, we introduce a concept of magnetless bianisotropic time-modulated systems that support nonreciprocal wave propagation at ...
IEEE2020Electric Field Analysis and Measurement for a Resistively Loaded Monocone
A novel resistively loaded monocone was proposed to extend the application for electric field calibration. Electric field analysis and measurement were carried out to verify the design of the proposed monocone. As revealed by the results, the S-11 of the m ...
IEEE2020Zero Index Metamaterial for High Gain Array
Many metamaterials, including metal wire grid, was invented to enhance the performance of the antenna in the last decade. A novel zero index metamaterial (ZIM), consisting of double metal layers with periodic circular perforation cells, was proposed and st ...
IEEE2020Calibration-Free Calorimeter for Sensitive Loss Measurements: Case of High-Frequency Inductors
Elison de Nazareth Matioli, Remco Franciscus Peter van Erp, Enea Figini, Armin Jafari, Palliyage Srilak Nirmana Perera, Furkan Karakaya, Michaël Heijnemans
Wide-band-gap technologies enable ultra-high efficiencies in high-frequency power conversion. However, inadequate accuracies in electrical measurements could lead to spurious efficiency measurements, even above 100%. Furthermore, bandwidth limitations, par ...
IEEE2020Nonlinear piezoelectric vibration energy harvester with frequency-tuned impacting resonators for improving broadband performance at low frequencies
Nico de Rooij, Danick Briand, Andres Felipe Vasquez Quintero, Robert Andrew Lockhart
The paper reports on a nonlinear frequency up-converting vibration energy harvester with enhanced broadband performance below 50 Hz, which is attained by leveraging vibro-impact interaction between two high-frequency piezoelectric generators and two low-fr ...
IOP PUBLISHING LTD2019Theory for the density of interacting quasilocalized modes in amorphous solids
Matthieu Wyart, Thomas Willem Jan de Geus, Wencheng Ji, Marko Popovic
Quasilocalized modes appear in the vibrational spectrum of amorphous solids at low frequency. Though never formalized, these modes are believed to have a close relationship with other important local excitations, including shear transformations and two-lev ...
AMER PHYSICAL SOC2019AltitudeOmics: Spontaneous Baroreflex Sensitivity During Acclimatization to 5,260 m: A Comparison of Methods
Jean-Marc Vesin, Sasan Yazdani
Introduction Baroreflex sensitivity (BRS) is essential to ensure rapid adjustment to variations in blood pressure (BP). Spontaneous baroreflex function can be assessed using continuous recordings of blood pressure. The goal of this study was to compare fou ...
FRONTIERS MEDIA SA2019Tower and Path-Dependent Voltage Effects on the Measurement of Grounding Impedance for Lightning Studies
Marcos Rubinstein, Antonio Sunjerga, Hamidreza Karami, Keyhan Sheshyekani
We present an analysis aimed at evaluating the effect of the presence of the tower on the measurement of the grounding impedance. The Numerical Electromagnetics Code NEC-4 is used for the full-wave modeling of the structure including the tower and its foot ...
2019