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49 papers · 1 filter
Waveform-Selective Mantle Cloaks for Intelligent Antennas
Stefano Vellucci, Alessio Monti, Mirko Barbuto +2
We present the design of an innovative wire antenna able to automatically hide or reveal its presence depending on the waveform of the received/transmitted signal. This unconventio…
Traversable wormholes with vanishing sound speed in gravity
Salvatore Capozziello, Orlando Luongo, Lorenza Mauro
We derive exact traversable wormhole solutions in the framework of gravity with no exotic matter and with stable conditions over the geometric fluid entering the throat. For…
Understanding the evolution and dust formation of carbon stars in the LMC with a look at the JWST
E. Marini, F. Dell'Agli, M. A. T. Groenewegen +6
Carbon stars have been and are extensively studied, given their complex internal structure and their peculiar chemical composition, which make them living laboratories to test stel…
A Topological Design Tool for the Synthesis of Antenna Radiation Patterns
Mirko Barbuto, Mohammad-Ali Miri, Andrea Alù +2
Patch antennas are among the most popular radiating elements, yet their quasi-2-D structure reduces the degrees of freedom available to tailor their radiation pattern. To overcome…
Waveguide Components and Aperture Antennas With Frequency- and Time-Domain Selectivity Properties
Mirko Barbuto, Daniele Lione, Alessio Monti +3
Filtering modules are essential devices of modern microwave systems given their capability to improve the signal-to-noise ratio of the received signal or to eliminate the unwanted…
Surface Impedance Modeling of All-Dielectric Metasurfaces
Alessio Monti, Andrea Alù, Alessandro Toscano +1
We develop a simple and reliable analytical model that allows describing the electromagnetic response of all-dielectric metasurfaces consisting of a single-layer array of high-perm…