A new approach for achieving frequency reconfigurability in wire antennas is proposed. In particular, we show that the antenna input impedance and its reflection coefficient can be tuned by properly engineering the geometrical and electromagnetic characteristics of a coating metasurface wrapped around. This mechanism is then exploited to design a reconfigurable dipole antenna coated by multi-layered metasurfaces loaded with varactor diodes. By tuning the capacitance of the varactors, the operative frequency band of the antenna can be dynamically and continuously shifted within a broad range of frequencies enabling wideband reconfigurability capabilities, while still preserving a stable omnidirectional radiation pattern.
Vellucci, S., Sibi, D.D., Monti, A., Barbuto, M., Toscano, A., Bilotti, F. (2021). Frequency reconfigurable wire antennas through conformal metasurfaces. In 2021 15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021 (pp.445-447). Institute of Electrical and Electronics Engineers Inc. [10.1109/Metamaterials52332.2021.9577114].
Frequency reconfigurable wire antennas through conformal metasurfaces
Vellucci S.;Monti A.;Barbuto M.;Toscano A.;Bilotti F.
2021-01-01
Abstract
A new approach for achieving frequency reconfigurability in wire antennas is proposed. In particular, we show that the antenna input impedance and its reflection coefficient can be tuned by properly engineering the geometrical and electromagnetic characteristics of a coating metasurface wrapped around. This mechanism is then exploited to design a reconfigurable dipole antenna coated by multi-layered metasurfaces loaded with varactor diodes. By tuning the capacitance of the varactors, the operative frequency band of the antenna can be dynamically and continuously shifted within a broad range of frequencies enabling wideband reconfigurability capabilities, while still preserving a stable omnidirectional radiation pattern.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
