In this paper, some numerical results on the scanning capabilities of a bifocal dielectric transmitarray (TA) are presented. The TA surface has been discretized with three-layer unit cells: the central one presents a varying size square hole, used to control the phase of the transmission coefficient, while the two identical, external layers are characterized by a truncated pyramid hole and they act as matching elements. The computed antenna radiation patterns stay quite stable of an angular range of ±40°, keeping in each of the considered direction of maximum radiation a 1-dB gain bandwidth larger than 23%.

Wideband Bifocal Dielectric Transmitarray / Massaccesi, Andrea; Pirinoli, Paola. - (2019). (Intervento presentato al convegno IEEE 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA 2019) tenutosi a Granada, Spain) [10.1109/ICEAA.2019.8879254].

Wideband Bifocal Dielectric Transmitarray

Andrea Massaccesi;Paola Pirinoli
2019

Abstract

In this paper, some numerical results on the scanning capabilities of a bifocal dielectric transmitarray (TA) are presented. The TA surface has been discretized with three-layer unit cells: the central one presents a varying size square hole, used to control the phase of the transmission coefficient, while the two identical, external layers are characterized by a truncated pyramid hole and they act as matching elements. The computed antenna radiation patterns stay quite stable of an angular range of ±40°, keeping in each of the considered direction of maximum radiation a 1-dB gain bandwidth larger than 23%.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2737983