5 papers
A Physically Consistent Assessment of Nearfield Beamfocusing into Occluded Regions
Georg Schwan, Alexander Stutz-Tirri, Christoph Studer
Recent work has explored elaborate beamfocusing techniques for the radiative nearfield, with some studies suggesting that certain beamshapes, such as Airy beams, can enable efficie…
On Near-Far-Field Boundaries in Wireless Systems
Alexander Stutz-Tirri, Ahmad Dkhan, Hadi Sarieddeen +1
Near-field (NF) multi-antenna wireless communication and sensing have attracted growing research interest in recent years. A core question in this area is how to determine whether…
Physically Consistent Evaluation of Commonly Used Near-Field Models
Georg Schwan, Alexander Stutz-Tirri, Christoph Studer
Near-field multi-antenna wireless communication has attracted growing research interest in recent years. Despite this development, most of the current literature on antennas and re…
On the Complexity of Electromagnetic Far-Field Modeling
Torben Kölle, Alexander Stutz-Tirri, Christoph Studer
Modern wireless systems are envisioned to employ antenna architectures that not only transmit and receive electromagnetic (EM) waves, but also intentionally reflect and possibly tr…
Joint Beamforming and Matching for Ultra-Dense Massive Antenna Arrays
Carolina Nolasco-Ferencikova, Georg Schwan, Raphael Rolny +2
Massive multiple-input multiple-output (MIMO) offers substantial spectral-efficiency gains, but scaling to very large antenna arrays with conventional all-digital and hybrid beamfo…