3D printed active origami dielectrics for frequency tunable antennas through mechanical actuation
We investigate using a reconfigurable metamaterial structure based on high permittivity dielectric elements in a flexible origami framework to control the electromagnetic response of a suspended patch antenna. Origami-inspired dielectric structures are fabricated by additive manufacturing of origami...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
IEEE
2022
|
| _version_ | 1826308690646401024 |
|---|---|
| author | Wu, Y Vallecchi, A Yang, Y You, Z Shamonina, E Stevens, CJ Grant, PS |
| author_facet | Wu, Y Vallecchi, A Yang, Y You, Z Shamonina, E Stevens, CJ Grant, PS |
| author_sort | Wu, Y |
| collection | OXFORD |
| description | We investigate using a reconfigurable metamaterial structure based on high permittivity dielectric elements in a flexible origami framework to control the electromagnetic response of a suspended patch antenna. Origami-inspired dielectric structures are fabricated by additive manufacturing of origami elements using an ABS-30 vol% BaTiO3 filament (permittivity ∼11 ). The printed millimeter-scale elements are then assembled into an origami structure using flexible polymer hinges. Alternatively, dielectric origami structures are also achieved using a flexible, polymer-only origami lattice pre-fabricated by stereolithography into which shaped high dielectric elements (permittivity ∼18 ) of ABS-60 vol% CaTiO3, manufactured by field assisted sintering, are inserted. The various dielectric origami designs are inserted into the air gap between a suspended patch antenna and a ground plane, designed to operate at a resonant frequency of 1 GHz. The presence of the dielectric origami modifies the antenna resonant frequency and tunablity is then achieved through different configurations of the dielectric origami, actuated by hand or mechanically. Tunability arises because varying the configuration, and overall density, of the dielectric origami varies its effective permittivity and thus the patch resonant frequency. The dielectric origami structures provide a tunable range up to ∼14% , in good agreement with numerical simulations. Simulations are also used to show how broader tunability could be achieved easily, for example, by optimizing the size of the dielectric elements. Overall, the results using these preliminary dielectric origami structures, enabled by combining advanced manufacturing techniques, suggest that the approach offers a wide design space with the potential to realise novel antenna functionality and flexibility. |
| first_indexed | 2024-03-07T07:23:07Z |
| format | Journal article |
| id | oxford-uuid:94eb328b-e8f3-4cbe-bdf0-249bdb3753ba |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:23:07Z |
| publishDate | 2022 |
| publisher | IEEE |
| record_format | dspace |
| spelling | oxford-uuid:94eb328b-e8f3-4cbe-bdf0-249bdb3753ba2022-11-04T11:37:23Z3D printed active origami dielectrics for frequency tunable antennas through mechanical actuationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:94eb328b-e8f3-4cbe-bdf0-249bdb3753baEnglishSymplectic ElementsIEEE2022Wu, YVallecchi, AYang, YYou, ZShamonina, EStevens, CJGrant, PSWe investigate using a reconfigurable metamaterial structure based on high permittivity dielectric elements in a flexible origami framework to control the electromagnetic response of a suspended patch antenna. Origami-inspired dielectric structures are fabricated by additive manufacturing of origami elements using an ABS-30 vol% BaTiO3 filament (permittivity ∼11 ). The printed millimeter-scale elements are then assembled into an origami structure using flexible polymer hinges. Alternatively, dielectric origami structures are also achieved using a flexible, polymer-only origami lattice pre-fabricated by stereolithography into which shaped high dielectric elements (permittivity ∼18 ) of ABS-60 vol% CaTiO3, manufactured by field assisted sintering, are inserted. The various dielectric origami designs are inserted into the air gap between a suspended patch antenna and a ground plane, designed to operate at a resonant frequency of 1 GHz. The presence of the dielectric origami modifies the antenna resonant frequency and tunablity is then achieved through different configurations of the dielectric origami, actuated by hand or mechanically. Tunability arises because varying the configuration, and overall density, of the dielectric origami varies its effective permittivity and thus the patch resonant frequency. The dielectric origami structures provide a tunable range up to ∼14% , in good agreement with numerical simulations. Simulations are also used to show how broader tunability could be achieved easily, for example, by optimizing the size of the dielectric elements. Overall, the results using these preliminary dielectric origami structures, enabled by combining advanced manufacturing techniques, suggest that the approach offers a wide design space with the potential to realise novel antenna functionality and flexibility. |
| spellingShingle | Wu, Y Vallecchi, A Yang, Y You, Z Shamonina, E Stevens, CJ Grant, PS 3D printed active origami dielectrics for frequency tunable antennas through mechanical actuation |
| title | 3D printed active origami dielectrics for frequency tunable antennas through mechanical actuation |
| title_full | 3D printed active origami dielectrics for frequency tunable antennas through mechanical actuation |
| title_fullStr | 3D printed active origami dielectrics for frequency tunable antennas through mechanical actuation |
| title_full_unstemmed | 3D printed active origami dielectrics for frequency tunable antennas through mechanical actuation |
| title_short | 3D printed active origami dielectrics for frequency tunable antennas through mechanical actuation |
| title_sort | 3d printed active origami dielectrics for frequency tunable antennas through mechanical actuation |
| work_keys_str_mv | AT wuy 3dprintedactiveorigamidielectricsforfrequencytunableantennasthroughmechanicalactuation AT vallecchia 3dprintedactiveorigamidielectricsforfrequencytunableantennasthroughmechanicalactuation AT yangy 3dprintedactiveorigamidielectricsforfrequencytunableantennasthroughmechanicalactuation AT youz 3dprintedactiveorigamidielectricsforfrequencytunableantennasthroughmechanicalactuation AT shamoninae 3dprintedactiveorigamidielectricsforfrequencytunableantennasthroughmechanicalactuation AT stevenscj 3dprintedactiveorigamidielectricsforfrequencytunableantennasthroughmechanicalactuation AT grantps 3dprintedactiveorigamidielectricsforfrequencytunableantennasthroughmechanicalactuation |