On the use of Dielectric Gratings for Enlarging the Field of View in Low Dielectric Permittivity Lenses

Carluccio, G. (Speaker)

Activity: Talk or presentationTalk or presentation at a conference

Description

Low relative permittivity plastic elliptical lenses are a promising solution to be used in the future mm- and sub-mm wave systems, due to the availability of materials with moderate loss, light weight and cost-effective manufacturing. However, the low permittivity implies a reduction in the field of view achieved when displacing the lens feeder within the focal plane. In this contribution, the use of dielectric gratings with modulated height integrated inside elliptical lenses with low permittivity is investigated, with the aim of enlarging the steering angle reached. The dielectric gratings synthesize a tilted feeder pattern inside the elliptical lens, reducing the reflection loss and spill-over when illuminating the lens off-focus. The analytical approach used to dimension the gratings is explained here. An example in G-band (140-220GHz) has been simulated as a first proof-of-concept, showing promising results.
Period18 Mar 2020
Event title14th European Conference on Antennas and Propagation, EuCAP 2020
Event typeConference
Conference number14
LocationCopenhagen, Denmark
Degree of RecognitionInternational