In this contribution, we present the design of metamaterials-based flat lens and metamaterial-inspired particles, which have been successfully used to enhance the performance or to add new functionalities to aperture horn antennas. The metamaterial-based flat lens is designed to restore the gain performance of shortened optimum horn antennas. The lens consists of a proper combination of conventional epsilon-positive and epsilon-near-zero materials, in order to achieve the optimum field distribution on the aperture for maximizing the gain over a broad frequency range. The metamaterial-inspired particles are designed for integration directly inside horn antennas in order to provide additional functionalities or simple signal conditioning ability to the radiating element. Among them, filtering operations with a pass-band or a notched-band behavior, combination and splitting capabilities of signals with different carrier or polarization states, polarization conversion properties, and magnet-less non-reciprocity by exploiting spatiotemporal modulation of the particle have been verified both numerically and experimentally.
Ramaccia, D., Bilotti, F., Toscano, A., Barbuto, M., Hrabar, S., Sounas, D.l., et al. (2018). Extreme aperture antennas: Radiating and electrical performance enhanced by metamaterials. In 2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Proceedings (pp.1245-1246). 345 E 47TH ST, NEW YORK, NY 10017 USA : IEEE.
Extreme aperture antennas: Radiating and electrical performance enhanced by metamaterials
Ramaccia, D
Writing – Original Draft Preparation
;Bilotti, FSupervision
;Toscano, ASupervision
;Barbuto, MMembro del Collaboration Group
;Alu, AMembro del Collaboration Group
2018-01-01
Abstract
In this contribution, we present the design of metamaterials-based flat lens and metamaterial-inspired particles, which have been successfully used to enhance the performance or to add new functionalities to aperture horn antennas. The metamaterial-based flat lens is designed to restore the gain performance of shortened optimum horn antennas. The lens consists of a proper combination of conventional epsilon-positive and epsilon-near-zero materials, in order to achieve the optimum field distribution on the aperture for maximizing the gain over a broad frequency range. The metamaterial-inspired particles are designed for integration directly inside horn antennas in order to provide additional functionalities or simple signal conditioning ability to the radiating element. Among them, filtering operations with a pass-band or a notched-band behavior, combination and splitting capabilities of signals with different carrier or polarization states, polarization conversion properties, and magnet-less non-reciprocity by exploiting spatiotemporal modulation of the particle have been verified both numerically and experimentally.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
