5 papers
Properties of Near Field Focusing for Three-Dimensional Large Intelligent Surface
Jiawang Li, Mats Gustafsson, Alireza Saberkari +1
This work investigates near-field focusing using a three-dimensional (3D) large intelligent surface (LIS) across frequencies and polarizations. Specifically, the LIS elements are d…
Interpreting Moment Matrix Blocks Spectra using Mutual Shadow Area
Yaniv Brick, Francesco P. Andriulli, Mats Gustafsson
The mutual shadow area of pairs of surface regions is used for guiding the study of the spectral components and rank of their wave interaction, as captured by the corresponding mom…
Shadow Area and Degrees of Freedom for Free-Space Communication
Mats Gustafsson
The number of degrees of freedom (NDoF) in a communication channel fundamentally limits the number of independent spatial modes available for transmitting and receiving information…
Physical Limits and Optimal Synthesis of Beyond Diagonal Anomalous Scatterers
Mats Gustafsson
Realizing metasurfaces for anomalous scattering is fundamental to designing reflector arrays, reconfigurable intelligent surfaces, and metasurface antennas. However, the basic cost…
Degrees of Freedom for Radiating Systems
Mats Gustafsson
Electromagnetic degrees of freedom are instrumental in antenna design, wireless communications, imaging, and scattering. Larger number of degrees of freedom enhances control in ant…