5 papers
Trade-offs in absorption and scattering by nanophotonic structures
Kurt Schab, Austin Rothschild, Kristi Nguyen +3
Trade-offs between feasible absorption and scattering cross sections of obstacles confined to an arbitrarily shaped volume are formulated as a multi-objective optimization problem…
Radiation Efficiency Limits in Direct Antenna Modulation Transmitters
Kurt Schab
Relative bounds on radiation efficiency are established for time-modulated antenna systems where radiation is generated by broadband conduction currents impressed using idealized n…
Modal Tracking Based on Group Theory
Michal Masek, Miloslav Capek, Lukas Jelinek +1
Issues in modal tracking in the presence of crossings and crossing avoidances between eigenvalue traces are solved via the theory of point groups. The von Neumann-Wigner theorem is…
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…
Trade-off Between Antenna Efficiency and Q-Factor
Mats Gustafsson, Miloslav Capek, Kurt Schab
The trade-off between radiation efficiency and antenna bandwidth, expressed in terms of Q-factor, for small antennas is formulated as a multi-objective optimization problem in curr…