In this contribution, we investigate the self-healing properties of vortex modes at microwave frequencies. In particular, we show that the peculiar characteristics of vortex modes generated by patch antennas, i.e., the presence of a phase singularity point inherently related to an amplitude null, cannot be suppressed by a metallic object placed in the near-field of the antenna itself. This result could be exploited to design antenna systems with robust radiation characteristics respect to the presence of other objects placed in their close proximity.
Bassotti, A., Barbuto, M., Alu, A., Bilotti, F., Toscano, A. (2019). Topological robustness of phase singularities at microwave frequencies. In 2019 13th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2019 (pp.X062-X064). Institute of Electrical and Electronics Engineers Inc. [10.1109/MetaMaterials.2019.8900916].
Topological robustness of phase singularities at microwave frequencies
Barbuto M.;Alu A.;Bilotti F.;Toscano A.
2019-01-01
Abstract
In this contribution, we investigate the self-healing properties of vortex modes at microwave frequencies. In particular, we show that the peculiar characteristics of vortex modes generated by patch antennas, i.e., the presence of a phase singularity point inherently related to an amplitude null, cannot be suppressed by a metallic object placed in the near-field of the antenna itself. This result could be exploited to design antenna systems with robust radiation characteristics respect to the presence of other objects placed in their close proximity.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
