68 citations · 670 across the 27 of their papers we have counts for
6 papers · 1 filter
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…
Dissipation Factors of Spherical Current Modes on Multiple Spherical Layers
Vit Losenicky, Lukas Jelinek, Miloslav Capek +1
Radiation efficiencies of modal current densities distributed on a spherical shell are evaluated in terms of dissipation factor. The presented approach is rigorous, yet simple and…
Accurate and Efficient Evaluation of Characteristic Modes
Doruk Tayli, Miloslav Capek, Lamyae Akrou +3
A new method to improve the accuracy and efficiency of characteristic mode (CM) decomposition for perfectly conducting bodies is presented. The method uses the expansion of the Gre…
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…
Validating the Characteristic Modes Solvers
Miloslav Capek, Vit Losenicky, Lukas Jelinek +1
Characteristic modes of a spherical shell are found analytically as spherical harmonics normalized to radiate unitary power and to fulfill specific boundary conditions. The present…