202 citations · 671 across the 19 of their papers we have counts for
20 papers
Physical limitations of phased array antennas
Andrei Ludvig-Osipov, Jari-Matti Hannula, Patricia Naccachian +1
In this paper, the bounds on the Q-factor, a quantity inversely proportional to bandwidth, are derived and investigated for narrow-band phased array antennas. Arrays in free space…
Multi-tone Signal Optimization for Wireless Power Transfer in the Presence of Wireless Communication Links
Boules A. Mouris, Hadi Ghauch, Ragnar Thobaben +1
In this paper, we study optimization of multi-tone signals for wireless power transfer (WPT) systems. We investigate different non-linear energy harvesting models. Two of them are…
Stored energies and Q-factor of two-dimensionally periodic antenna arrays
Andrei Ludvig-Osipov, B. L. G. Jonsson
The Q-factor for lossless three-dimensional structures with two-dimensional periodicity is here derived in terms of the electric current density. The derivation in itself is shape-…
Quasi-Herglotz functions and convex optimization
Yevhen Ivanenko, Mitja Nedic, Mats Gustafsson +3
We introduce the set of quasi-Herglotz functions and demonstrate that it has properties useful in the modeling of non-passive systems. The linear space of quasi-Herglotz functions…
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…
Passive approximation and optimization using B-splines
Yevhen Ivanenko, Mats Gustafsson, B. L. G. Jonsson +4
A passive approximation problem is formulated where the target function is an arbitrary complex valued continuous function defined on an approximation domain consisting of a finite…