Dr. Gabriele Gradoni
School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD, UK
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Academic Career Length
21Years (2006-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications29 July 2011 in IEEE Transactions on Microwave Theory and Techniques
Journal Article
DMDavide Micheli
Davide MicheliRPRoberto Pastore
Roberto Pastore
CACarmelo Apollo
Carmelo Apollo
MMMarco Marchetti
Marco MarchettiGabriele GradoniFMFranco Moglie
Franco Moglie +1
In this paper, we present the design of nanostructured multilayer absorbers, carried out with the aid of a genetic algorithm (GA). Waveguide measurements are performed to recover the dielectric properties of micrographite single-walled carbon nanotube, micrographite walled carbon nanotube, carbon nanofiber, and fullerene-based composite materials. Conductive fillers are uniformly dispersed in an epoxy resin at different weight percentages (1, 3, 5 wt.%). The electromagnetic (EM) analysis is performed embedding the forward/backward propagation matrix formalism in an in-house GA, thus able to carry out optimization upon oblique incidence over a finite angular range. Developed code minimizes both the reflection and the transmission coefficients under the thickness minimization constraint. Comparison between micrographite and nanopowders absorbers is presented and discussed, when a broadband quasi-perfect absorber is achieved among the X-band combining the two filler families, i.e., exhibiting a loss factor greater than 90% in most of the band, for a thickness of about 1 cm. It is demonstrated that the nanofillers with higher aspect ratio mainly contribute to the EM absorption. Findings are of interest in both radar-absorbing material and shielding structures.
11 January 2021 in IEEE Wireless Communications Letters
Journal Article
Gabriele GradoniMRMarco Di Renzo
Marco Di RenzoReconfigurable intelligent surfaces (RISs) are an emerging technology for application to wireless networks. We introduce a physics and electromagnetic (EM) compliant communication model for analyzing and optimizing RIS-assisted wireless systems. The proposed model has four main notable attributes: (i) it is end-to-end, i.e., it is formulated in terms of an equivalent channel that yields a one-to-one mapping between the voltages fed into the ports of a transmitter and the voltages measured at the ports of a receiver; (ii) it is EM-compliant, i.e., it accounts for the generation and propagation of the EM fields; (iii) it is mutual coupling aware, i.e., it accounts for the mutual coupling among the sub-wavelength unit cells of the RIS; and (iv) it is unit cell aware, i.e., it accounts for the intertwinement between the amplitude and phase response of the unit cells of the RIS.
1 June 2014 in Wave Motion
Journal Article
Gabriele GradoniJYJen-Hao Yeh
Jen-Hao Yeh
BXBo Xiao
Bo Xiao
TAThomas M. Antonsen
Thomas M. AntonsenSASteven M. Anlage
Steven M. AnlageEOEdward Ott
Edward Ott8 November 2011 in IEEE Transactions on Electromagnetic Compatibility
Journal Article
DMDavide Micheli
Davide MicheliCACarmelo Apollo
Carmelo Apollo
RPRoberto Pastore
Roberto Pastore
DBDaniele Barbera
Daniele Barbera
RMRamón Bueno Morles
Ramón Bueno Morles
FMFranco Moglie
Franco Moglie +3
In this paper, we propose a multilayer nanostructured composite for broadband shielding applications. Layers disposal, electrical parameters, and thicknesses are optimized through a winning particle optimization algorithm to achieve the minimization of the transmitted waves. The structures are simulated by including the forward/backward scattering matrix formalism in the optimization code. The adopted algorithm is the recently introduced winning particle optimization. Manufacturing of the composites is grounded on the optimization procedure. Thanks to the macroscopic absorption features of such nanostructured layers, very thin and lightweight composites can be produced. Several weight percentages of multiwall carbon nanotubes are considered in composite base material manufacturing, also including 6wt% and 15wt% in order to enhance the electromagnetic shielding performance. Prototypes are tested in the microwave region, showing the reliability of the optimization procedure.
1 June 2013 in Acta Astronautica
Journal Article
MAM. Albano
M. Albano
DMDavide Micheli
Davide MicheliGabriele GradoniRMR.B. Morles
R.B. Morles
MMMarco Marchetti
Marco Marchetti
Valter Mariani Primiani +1
1 July 2013 in Acta Astronautica
Journal Article
DMDavide Micheli
Davide MicheliRPRoberto Pastore
Roberto Pastore
Gabriele GradoniValter Mariani PrimianiFMFranco Moglie
Franco MoglieMMMarco Marchetti
Marco MarchettiAbout Me
GABRIELE GRADONI received a Ph.D. degree in electromagnetics from the Universita Politecnica delle Marche, Ancona, Italy, in 2010. He was a Visiting Researcher with the Time, Quantum, and Electromagnetics Team, National Physical Laboratory, Teddington, U.K. in 2008. From 2010 to 2013, he was a Research Associate with the Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, USA. From 2013 to 2016, he was a Research Fellow with the School of Mathematical Sciences, University of Nottingham. Since 2023, he has been a Full Professor of mathematics and electrical engineering with the University of Nottingham, UK. His research interests include probabilistic and asymptotic methods for propagation in complex and reconfigurable wave systems, wave chaos, and meta-surface physics, with applications for electromagnetic compatibility and modern wireless communication systems. He received the URSI Commission B Young Scientist Award in 2010 and 2016, the Gaetano Latmiral Prize in 2015, and the Honorable Mention IEEE TEMC Richard B. Schulz Transactions Prize Paper Award in 2020. From 2014 to 2021, he has been the URSI Commission Early Career Representative. Since 2020, he has been a Royal Society Industry Fellow with BT Applied Research, and an Adjunct Associate Professor at the Department of Electrical and Computer Engineering, University of Illinois, Urbana Champaign, U.S.A.