3D-Printed Planar Graded Index Lenses

Abstract

The authors introduce two flat graded-index (GRIN) lens designs in this study. First of these is a thick lens, which was designed and fabricated by using the three-dimensional (3D)-printing technique. Second, a thin dial-a-dielectric (DaD) lens, which uses state-of-the-art artificially engineered dielectric materials for design and for which they present only the simulated results, with plans to fabricate it in the future. Both designs overcome the difficulties faced in finding desired commercial off-the-shelf materials, either for 3D-printing or for fabricating conventional GRIN lenses. The lenses comprise of several concentric dielectric rings with bespoke relative permittivities for transforming spherical waves into plane waves and vice versa. The 3D-printed thick flat lens is low-cost and light-weight, but provides broadband and high gain performance. Measurement results show that the realised gain of the thick lens is 9-11 dB over the frequency band of 12-18 GHz. The designed DaD lens has the desirable characteristics of low loss, low reflection and broadband properties.

Publication Date

10-22-2016

Publication Title

IET Microwaves, Antennas and Propagation

Volume

10

Issue

13

Number of Pages

1411-1419

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1049/iet-map.2016.0013

Socpus ID

84994172721 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84994172721

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