In this work, a novel metamaterial lens (metalens) is designed and optimized to improve the radiation performance of an antipodal Vivaldi antenna for wideband applications. The metalens is integrated into the antenna substrate, and placed close to the tapered slot in the end-fire direction, allowing the preservation of the lightweight and compactness of the antenna. The prototype has been fabricated and characterized, demonstrating good agreement with the simulations. The insertion of the metalens allows, with respect to the pristine Vivaldi, a measured maximum gain of (Formula presented.), increased by about (Formula presented.) an operating bandwidth of (Formula presented.), increased by (Formula presented.) ; and a radiation pattern with a maximum reduction in half-power beamwidth of (Formula presented.), more symmetrical in the E and H planes.
A Novel L-Shaped Metalens for Ultra-Wide Band (UWB) Antenna Gain Improvement / Portosi, V.; Loconsole, A. M.; Campana, A.; Anelli, F.; Prudenzano, F.. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 13:8(2023), p. 4802.4802. [10.3390/app13084802]
A Novel L-Shaped Metalens for Ultra-Wide Band (UWB) Antenna Gain Improvement
Portosi V.Membro del Collaboration Group
;Loconsole A. M.Membro del Collaboration Group
;Anelli F.Membro del Collaboration Group
;Prudenzano F.Membro del Collaboration Group
2023-01-01
Abstract
In this work, a novel metamaterial lens (metalens) is designed and optimized to improve the radiation performance of an antipodal Vivaldi antenna for wideband applications. The metalens is integrated into the antenna substrate, and placed close to the tapered slot in the end-fire direction, allowing the preservation of the lightweight and compactness of the antenna. The prototype has been fabricated and characterized, demonstrating good agreement with the simulations. The insertion of the metalens allows, with respect to the pristine Vivaldi, a measured maximum gain of (Formula presented.), increased by about (Formula presented.) an operating bandwidth of (Formula presented.), increased by (Formula presented.) ; and a radiation pattern with a maximum reduction in half-power beamwidth of (Formula presented.), more symmetrical in the E and H planes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
