Mauro Ettorre

In the near future, high-speed wireless networks will take advantage of the vast amount of available bandwidth in the sub- and millimeter frequency ranges of XG systems and New Space technologies. These future networks will facilitate communication between users and objects located both in the far-field and near-field regions of radiating devices. Innovations in antenna technology are crucial for fully utilizing these broad bandwidths and providing efficient data links for mobile users. I recently proposed the use of quasi-optical planar systems as efficient beamformers for multi-beam, wide-scanning antennas. This approach minimizes losses and costs associated with beamforming networks for arrays operating at higher frequencies while maintaining the flexibility of the radiating unit. I will discuss the implementation of this concept across various technologies specifically at millimeter and sub-millimeter frequency bands. For satellite communications, I will demonstrate how quasi-optical planar systems can drive wideband terminal antennas based on connected long slot arrays. I will also present the advantages of these arrays in terms of bandwidth and scanning capabilities and discuss their physical implementation. Regarding near-field communications, I will highlight the benefits of non-diffractive beams. In particular, I will show how non-diffractive beams can be generated with planar radiating structures by exciting cylindrical leaky waves. I will explain how non-diffractive beams can overcome path loss and obstructions, demonstrating this experimentally at millimeter-wave frequencies. These results pave the way for a novel ‎paradigm for near-field wireless links.

Address:Sweden