33 citations · 115 across the 6 of their papers we have counts for
6 papers
Capacity Bounds and Degrees of Freedom for MIMO Antennas Constrained by Q-Factor
Casimir Ehrenborg, Mats Gustafsson, Miloslav Capek
The optimal spectral efficiency and number of independent channels for MIMO antennas in isotropic multipath channels are investigated when bandwidth requirements are placed on the…
Physical bounds and radiation modes for MIMO antennas
Casimir Ehrenborg, Mats Gustafsson
Modern antenna design for communication systems revolves around two extremes: devices, where only a small region is dedicated to antenna design, and base stations, where design spa…
Fundamental bounds on transmission through periodically perforated metal screens with experimental validation
Andrei Ludvig-Osipov, Johan Lundgren, Casimir Ehrenborg +5
This paper presents a study of transmission through arrays of periodic sub-wavelength apertures. Fundamental limitations for this phenomenon are formulated as a sum rule, relating…
Optimal Planar Electric Dipole Antenna
Miloslav Capek, Lukas Jelinek, Kurt Schab +4
Considerable time is often spent optimizing antennas to meet specific design metrics. Rarely, however, are the resulting antenna designs compared to rigorous physical bounds on tho…
Energy Stored by Radiating Systems
Kurt Schab, Lukas Jelinek, Miloslav Capek +4
Though commonly used to calculate Q-factor and fractional bandwidth, the energy stored by radiating systems (antennas) is a subtle and challenging concept that has perplexed resear…
Fundamental bounds on MIMO antennas
Casimir Ehrenborg, Mats Gustafsson
Antenna current optimization is often used to analyze the optimal performance of antennas. Antenna performance can be quantified in e.g., minimum Q-factor and efficiency. The perfo…