Data · dataset · 2026
Metasurface-augmented gradient-index lenses for millimetre-wave applications
Listed in ZivaHub and Deakin Research Online and DMU Figshare — shown once because both records carry DOI 10.17034/32640174.v1
This research project aims to develop metasurface-augmented gradient index (GRIN) lenses for millimetre-wave (mmWave) applications.
Description
It introduces a concept combining GRIN lenses with metasurfaces, enhancing the ability to direct beams of high-gain GRIN lens antennas and control focal positions in GRIN lens beamformers. A novel methodology for designing the metasurface is established by analysing the electric field phases within a GRIN lens along with the phase shift in a single unit cell, using full-wave simulation tools available to researchers.<br><br>The research investigates two GRIN lenses: the 2D Luneburg lens antenna and the 2D Maxwell fisheye lens (MFL) beamformer in reflective and transmit modes.
By integrating a half-circle Luneburg lens antenna with a variable-sized square patch reflectarray, beamsteering with a maximum angle of 75° was achieved across a frequency range of 26 – 28 GHz. The operational bandwidth extended to 24 – 38 GHz with a wideband Phoenix reflectarray. The half-circle Maxwell fisheye lens (HMFL) beamformer maintained its focal axis and achieved a maximum angle of 45° within a frequency range of 26 – 28 GHz.
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This was extended to 22 – 32 GHz using the Phoenix reflectarray. Both lenses were evaluated at normal incidence (0°) and oblique incidences (-15° and -30°).<br><br>In transmit mode, the GRIN lenses were modified with an all-dielectric phase correction layer composed of cubic unit cells. This layer, placed vertically between two half-circle lenses, formed a 2D circular transmitarray-augmented Luneburg lens antenna, generating directive beams with a maximum angle of 75° across 24 – 30 GHz.
The MFL beamformer, combined with the phase correction layer, focused incident energy, achieving a maximum angle of 45° across 22 – 32 GHz.<br><br>This research explores 3D printing techniques for fabricating GRIN lenses and transmitting metasurfaces and printed circuit board (PCB) technology for the reflective metasurfaces, enabling cost-effective laboratory prototype production.<br>
Links
Where it is published
- DOI doi.org/10.17034/32640174.v1 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science
- Inferred from text
- Simulation 75%
Provenance · 3 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/32640174 | 8 d ago | JSON v1 |
| Deakin Research Online | oai:figshare.com:article/32640174 | 8 d ago | JSON v1 |
| DMU Figshare | oai:figshare.com:article/32640174 | 8 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[method].local:method:simulation | enrichment · zivahub uct ac za | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license_text | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |