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3D-Printed high dielectric contrast gradient index flat lens for a directive antenna with reduced dimensions
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Isakov, Dmitry, Stevens, Chris J., Castles, Flynn and Grant, Patrick S. (2016) 3D-Printed high dielectric contrast gradient index flat lens for a directive antenna with reduced dimensions. Advanced Materials Technologies, 1 (6). 1600072. doi:10.1002/admt.201600072 ISSN 2365709X.
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Official URL: http://dx.doi.org/10.1002/admt.201600072
Abstract
Gradient refractive index (GRIN) materials are of interest for various applications where transformation optic principles can be applied to the design of improved photonic and microwave devices. GRIN materials comprise spatially varying electric and/or magnetic properties that challenge conventional manufacturing processes. In this work, the design, fabrication, characterization, and performance measurement of a 3D‐printed GRIN lens are presented. Using the fused deposition modeling 3D printing process with a bespoke filament material possessing high dielectric permittivity, a refractive index contrast of ∆n = 1.4 across a GRIN lens at Ku‐band microwave frequencies is achieved. When the GRIN lens is combined with an open aperture horn, an improved antenna directivity is achieved while simultaneously reducing the overall antenna physical length by over a factor of two.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Journal or Publication Title: | Advanced Materials Technologies | ||||||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||||
ISSN: | 2365709X | ||||||||
Official Date: | September 2016 | ||||||||
Dates: |
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Volume: | 1 | ||||||||
Number: | 6 | ||||||||
Article Number: | 1600072 | ||||||||
DOI: | 10.1002/admt.201600072 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
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