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Slepian eigenvalues as tunnelling rates (2022)
Journal Article
Creagh, S. C., & Gradoni, G. (2023). Slepian eigenvalues as tunnelling rates. Annals of Physics, 449, Article 169204. https://doi.org/10.1016/j.aop.2022.169204

We calculate the eigenvalues of an integral operator associated with Prolate Spheroidal Wave Functions (or Slepian functions) by interpreting them as tunnelling probabilities in an analogous quantum problem. Doing so allows us to extend a well-known... Read More about Slepian eigenvalues as tunnelling rates.

Friedlander-Keller ray expansions in electromagnetism: Monochromatic radiation from arbitrary surfaces in three dimensions (2022)
Journal Article
Radjen, A. M. R., Tew, R. H., & Gradoni, G. (2023). Friedlander-Keller ray expansions in electromagnetism: Monochromatic radiation from arbitrary surfaces in three dimensions. European Journal of Applied Mathematics, 34(6), 1187-1208. https://doi.org/10.1017/s0956792522000249

The standard approach to applying ray theory to solving Maxwell’s equations in the large wave-number limit involves seeking solutions that have (i) an oscillatory exponential with a phase term that is linear in the wave-number and (ii) has an amplitu... Read More about Friedlander-Keller ray expansions in electromagnetism: Monochromatic radiation from arbitrary surfaces in three dimensions.

Tunable Graphene-based Metasurfaces for Multi-Wideband 6G Communications (2022)
Conference Proceeding
Taghvaee, H., Pitilakis, A., Tsilipakos, O., Tasolamprou, A. C., Kantartzis, N. V., Kafesaki, M., …Gradoni, G. (2022). Tunable Graphene-based Metasurfaces for Multi-Wideband 6G Communications. In 2022 Sixteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) (X434-X436). https://doi.org/10.1109/metamaterials54993.2022.9920752

The next generation of wireless communications within the framework of 6G will be operational at the low THz frequency band. Although THz systems will dramatically enhance several performance indicators such as the data rate, spectral efficiency, and... Read More about Tunable Graphene-based Metasurfaces for Multi-Wideband 6G Communications.

On the Enabling of Multi-Receiver Communications with Reconfigurable Intelligent Surfaces (2022)
Journal Article
Taghvaee, H., Jain, A., Abadal, S., Gradoni, G., Alarcon, E., & Cabellos-Aparicio, A. (2022). On the Enabling of Multi-Receiver Communications with Reconfigurable Intelligent Surfaces. IEEE Transactions on Nanotechnology, 21, 413-423. https://doi.org/10.1109/TNANO.2022.3195116

The reconfigurable intelligent surface is a promising technology for the manipulation and control of wireless electromagnetic signals. In particular, it has the potential to provide significant performance improvements for wireless networks. However,... Read More about On the Enabling of Multi-Receiver Communications with Reconfigurable Intelligent Surfaces.

Reconfigurable Intelligent Surface-Assisted Bluetooth Low Energy Link in Metal Enclosure (2021)
Journal Article
Lodro, M., Gradoni, G., Gros, J., Greedy, S., & Lerosey, G. (2021). Reconfigurable Intelligent Surface-Assisted Bluetooth Low Energy Link in Metal Enclosure. Frontiers in Communications and Networks, 2, Article 733637. https://doi.org/10.3389/frcmn.2021.733637

Reconfigurable intelligent surface (RIS) technology is at the forefront for its transformative role in future wireless communication systems such as wireless local area networks (WLAN), sixth-generation (6G) communication, and internet-of-things (IoT... Read More about Reconfigurable Intelligent Surface-Assisted Bluetooth Low Energy Link in Metal Enclosure.

Wireless Environment as a Service Enabled by Reconfigurable Intelligent Surfaces: The RISE-6G Perspective (2021)
Conference Proceeding
Strinati, E. C., Alexandropoulos, G. C., Sciancalepore, V., Di Renzo, M., Wymeersch, H., Phan-Huy, D. T., …Denis, B. (2021). Wireless Environment as a Service Enabled by Reconfigurable Intelligent Surfaces: The RISE-6G Perspective. In 2021 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit 2021) (562-567). https://doi.org/10.1109/eucnc/6gsummit51104.2021.9482474

The design of 6th Generation (6G) wireless networks points towards flexible connect-and-compute technologies capable to support innovative services and use cases. Targeting the 2030 horizon, 6G networks are poised to pave the way for sustainable huma... Read More about Wireless Environment as a Service Enabled by Reconfigurable Intelligent Surfaces: The RISE-6G Perspective.

On the Shielding Effectiveness Calculation of Enclosures through Measurements in Reverberation Chambers (2021)
Journal Article
Gifuni, A., Bastianelli, L., Gradoni, G., Moglie, F., Perna, S., Smartt, C., & Primiani, V. M. (2021). On the Shielding Effectiveness Calculation of Enclosures through Measurements in Reverberation Chambers. IEEE Transactions on Electromagnetic Compatibility, 63(5), 1395-1406. https://doi.org/10.1109/TEMC.2021.3057449

The IEC 61000-4-21 and IEEE 299.1 documents report similar but not equal procedures to measure the shielding effectiveness (SE) of enclosures through the use of reverberation chambers. In this article, it is shown that these two measurement procedure... Read More about On the Shielding Effectiveness Calculation of Enclosures through Measurements in Reverberation Chambers.

Wireless power distributions in multi-cavity systems at high frequencies (2021)
Journal Article
Adnan, F., Blakaj, V., Phang, S., Antonsen, T. M., Creagh, S. C., Gradoni, G., & Tanner, G. (2021). Wireless power distributions in multi-cavity systems at high frequencies. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 477(2245), Article 20200228. https://doi.org/10.1098/rspa.2020.0228

The next generations of wireless networks will work in frequency bands ranging from sub-6 GHz up to 100 GHz. Radio signal propagation differs here in several critical aspects from the behaviour in the microwave frequencies currently used. With wavele... Read More about Wireless power distributions in multi-cavity systems at high frequencies.

End-to-End Mutual Coupling Aware Communication Model for Reconfigurable Intelligent Surfaces: An Electromagnetic-Compliant Approach Based on Mutual Impedances (2021)
Journal Article
Gradoni, G., & Di Renzo, M. (2021). End-to-End Mutual Coupling Aware Communication Model for Reconfigurable Intelligent Surfaces: An Electromagnetic-Compliant Approach Based on Mutual Impedances. IEEE Wireless Communications Letters, 10(5), 938-942. https://doi.org/10.1109/LWC.2021.3050826

Reconfigurable 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... Read More about End-to-End Mutual Coupling Aware Communication Model for Reconfigurable Intelligent Surfaces: An Electromagnetic-Compliant Approach Based on Mutual Impedances.

Diffraction of Wigner functions (2020)
Journal Article
Creagh, S., Sieber, M., Gradoni, G., & Tanner, G. K. (2021). Diffraction of Wigner functions. Journal of Physics A: Mathematical and Theoretical, 54(1), Article 015701. https://doi.org/10.1088/1751-8121/abc72a

We describe the contribution of diffractive orbits to semiclassical approximations of Wigner function propagators. These contributions are based on diffractively scattered rays used in the geometrical theory of diffraction (GTD). They provide an exte... Read More about Diffraction of Wigner functions.

Nearfield acoustical holography – a Wigner function approach (2020)
Journal Article
Ramapriya, D. M., Gradoni, G., Creagh, S. C., Tanner, G., Moers, E., & Lopéz Arteaga, I. (2020). Nearfield acoustical holography – a Wigner function approach. Journal of Sound and Vibration, 486, Article 115593. https://doi.org/10.1016/j.jsv.2020.115593

We propose to use Wigner transformation methods as a tool for propagating measured acoustic signals from and towards a source region. We demonstrate the usefulness of the approach both for source reconstruction purposes and as a stable numerical simu... Read More about Nearfield acoustical holography – a Wigner function approach.

Efficient Statistical Model for Predicting Electromagnetic Wave Distribution in Coupled Enclosures (2020)
Journal Article
Ma, S., Phang, S., Drikas, Z., Addissie, B., Hong, R., Blakaj, V., …Anlage, S. M. (2020). Efficient Statistical Model for Predicting Electromagnetic Wave Distribution in Coupled Enclosures. Physical Review Applied, 14(1), Article 014022. https://doi.org/10.1103/PhysRevApplied.14.014022

The random coupling model (RCM) has been successfully applied to predicting the statistics of currents and voltages at ports in complex electromagnetic (EM) enclosures operating in the short-wavelength limit. Recent studies have extended the RCM to s... Read More about Efficient Statistical Model for Predicting Electromagnetic Wave Distribution in Coupled Enclosures.

Reflection and transmission of high-frequency acoustic, electromagnetic and elastic waves at a distinguished class of irregular, curved boundaries (2019)
Journal Article
Radjen, A., Gradoni, G., & Tew, R. (2019). Reflection and transmission of high-frequency acoustic, electromagnetic and elastic waves at a distinguished class of irregular, curved boundaries. IMA Journal of Applied Mathematics, 84(6), 1203-1219. https://doi.org/10.1093/imamat/hxz029

Reflection and transmission phenomena associated with high-frequency linear wave incidence on irregular boundaries between adjacent acoustic or electromagnetic media, or upon the irregular free surface of a semi-infinite elastic solid, are studied in... Read More about Reflection and transmission of high-frequency acoustic, electromagnetic and elastic waves at a distinguished class of irregular, curved boundaries.

Latest developments on the shielding effectiveness measurements of materials and gaskets in reverberation chambers (2019)
Journal Article
Gifuni, A., Gradoni, G., Smartt, C., Greedy, S., Villalón, A. M., Bastianelli, L., …Thomas, D. (2019). Latest developments on the shielding effectiveness measurements of materials and gaskets in reverberation chambers. IET Science Measurement and Technology, 14(4), 435-445. https://doi.org/10.1049/iet-smt.2019.0242

In this study, the authors present the latest developments on the measurements for the shielding effectiveness (SE) of gaskets and materials in reverberation chambers (RCs). A variant method, where the insertion loss of the fixture is achieved from t... Read More about Latest developments on the shielding effectiveness measurements of materials and gaskets in reverberation chambers.

Average Linear and Angular Momentum and Power of Random Fields Near a Perfectly Conducting Boundary (2019)
Journal Article
Arnaut, L. R., & Gradoni, G. (2019). Average Linear and Angular Momentum and Power of Random Fields Near a Perfectly Conducting Boundary. IEEE Transactions on Electromagnetic Compatibility, 1-10. https://doi.org/10.1109/temc.2019.2928246

The effect of a perfectly conducting planar boundary on the average linear momentum (LM), angular momentum (AM), and their power of a time-harmonic statistically isotropic random field is analyzed. These averages are purely imaginary, and their magni... Read More about Average Linear and Angular Momentum and Power of Random Fields Near a Perfectly Conducting Boundary.

A Secure Waveform Format for Interference Mitigation in Heterogeneous Uplink Networks (2018)
Journal Article
Zeng, Q., Nasser, H., & Gradoni, G. (2018). A Secure Waveform Format for Interference Mitigation in Heterogeneous Uplink Networks. IEEE Access, 6, 41688-41696. https://doi.org/10.1109/access.2018.2858840

In heterogeneous networks (HetNets), providing reliable and secure transmission uplinks to combat the potential interference is a major challenge. We address the multi-tier uplink interference issue, inspired by the secure waveform design in spatial... Read More about A Secure Waveform Format for Interference Mitigation in Heterogeneous Uplink Networks.

Stochastic electromagnetic field propagation: measurement and modelling (2018)
Journal Article
Gradoni, G., Russer, J., Baharuddin, M. H., Haider, M., Russer, P., Smartt, C., … Thomas, D. W. (2018). Stochastic electromagnetic field propagation: measurement and modelling. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, 376, Article 20170455. https://doi.org/10.1098/rsta.2017.0455

This paper reviews recent progress in the measurement and modelling of stochastic electromagnetic fields, focusing on propagation approaches based on Wigner functions and the method of moments technique. The respective propagation methods are exempli... Read More about Stochastic electromagnetic field propagation: measurement and modelling.

Analysis of Nonstationary Emissions for Efficient Characterization of Stochastic em Fields (2018)
Conference Proceeding
Baharuddin, M. H., Smartt, C., Maricar, M. I., Thomas, D. W., Gradoni, G., Creagh, S. C., & Tanner, G. (2018). Analysis of Nonstationary Emissions for Efficient Characterization of Stochastic em Fields. In 2018 International Symposium on Electromagnetic Compatibility (EMC EUROPE) (208-213). https://doi.org/10.1109/EMCEurope.2018.8485104

A statistical approach using field-field correlation functions which is obtained from two-probe time domain measurement is used to characterize the radiation from complex devices. The time-frequency analysis provided by the measurement data has shown... Read More about Analysis of Nonstationary Emissions for Efficient Characterization of Stochastic em Fields.

On the Estimated Measurement Uncertainty of the Insertion Loss in a Reverberation Chamber Including Frequency Stirring (2018)
Journal Article
Gifuni, A., Bastianelli, L., Migliaccio, M., Moglie, F., Mariani Primiani, V., & Gradoni, G. (2019). On the Estimated Measurement Uncertainty of the Insertion Loss in a Reverberation Chamber Including Frequency Stirring. IEEE Transactions on Electromagnetic Compatibility, 61(5), 1414-1422. https://doi.org/10.1109/temc.2018.2870073

In this paper, we present an improved model of measurement standard uncertainty of the insertion loss in a reverberation chamber (RC), including frequency stirring. Differently from the previous model, the enhanced one does not require specific condi... Read More about On the Estimated Measurement Uncertainty of the Insertion Loss in a Reverberation Chamber Including Frequency Stirring.