Experimental evaluation of 3D printed spiral phase plates for enabling an orbital angular momentum multiplexed radio system
<jats:p>This paper evaluates the performance of three-dimensionally (3D) printed spiral phase plates (SPPs) for enabling an orbital angular momentum (OAM) multiplexed radio system. The design and realization of the SPPs by means of additive manufacturing exploiting a high-permittivity material...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal article |
| Jezik: | English |
| Izdano: |
Royal Society
2019
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| _version_ | 1826263987672580096 |
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| author | Allen, B Pelham, T Wu, Y Drysdale, T Isakov, D Gamlath, C Stevens, C Hilton, G Beach, M Grant, P |
| author_facet | Allen, B Pelham, T Wu, Y Drysdale, T Isakov, D Gamlath, C Stevens, C Hilton, G Beach, M Grant, P |
| author_sort | Allen, B |
| collection | OXFORD |
| description | <jats:p>This paper evaluates the performance of three-dimensionally (3D) printed spiral phase plates (SPPs) for enabling an orbital angular momentum (OAM) multiplexed radio system. The design and realization of the SPPs by means of additive manufacturing exploiting a high-permittivity material is described. Modes 1 and 2 SPPs are then evaluated at 15 GHz in terms of 3D complex radiation pattern, mode purity and beam collimation by means of a 3D printed dielectric lens. The results with the lens yield a crosstalk of −8 dB for between modes 1 and −1, and −11.4 dB for between modes 2 and −2. We suggest a mode multiplexer architecture that is expected to further reduce the crosstalk for each mode. An additional loss of 4.2 dB is incurred with the SPPs inserted into the communication link, which is undesirable for obtaining reliable LTE-based communications. Thus, we suggest: using lower loss materials, seeking ways to reduce material interface reflections or alternative ways of OAM multiplexing to realize a viable OAM multiplexed radio system.</jats:p> |
| first_indexed | 2024-03-06T20:00:37Z |
| format | Journal article |
| id | oxford-uuid:272ac67e-2968-42f8-a399-c1b975599170 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:00:37Z |
| publishDate | 2019 |
| publisher | Royal Society |
| record_format | dspace |
| spelling | oxford-uuid:272ac67e-2968-42f8-a399-c1b9755991702022-03-26T12:05:21ZExperimental evaluation of 3D printed spiral phase plates for enabling an orbital angular momentum multiplexed radio systemJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:272ac67e-2968-42f8-a399-c1b975599170EnglishSymplectic Elements at OxfordRoyal Society2019Allen, BPelham, TWu, YDrysdale, TIsakov, DGamlath, CStevens, CHilton, GBeach, MGrant, P<jats:p>This paper evaluates the performance of three-dimensionally (3D) printed spiral phase plates (SPPs) for enabling an orbital angular momentum (OAM) multiplexed radio system. The design and realization of the SPPs by means of additive manufacturing exploiting a high-permittivity material is described. Modes 1 and 2 SPPs are then evaluated at 15 GHz in terms of 3D complex radiation pattern, mode purity and beam collimation by means of a 3D printed dielectric lens. The results with the lens yield a crosstalk of −8 dB for between modes 1 and −1, and −11.4 dB for between modes 2 and −2. We suggest a mode multiplexer architecture that is expected to further reduce the crosstalk for each mode. An additional loss of 4.2 dB is incurred with the SPPs inserted into the communication link, which is undesirable for obtaining reliable LTE-based communications. Thus, we suggest: using lower loss materials, seeking ways to reduce material interface reflections or alternative ways of OAM multiplexing to realize a viable OAM multiplexed radio system.</jats:p> |
| spellingShingle | Allen, B Pelham, T Wu, Y Drysdale, T Isakov, D Gamlath, C Stevens, C Hilton, G Beach, M Grant, P Experimental evaluation of 3D printed spiral phase plates for enabling an orbital angular momentum multiplexed radio system |
| title | Experimental evaluation of 3D printed spiral phase plates for enabling an orbital angular momentum multiplexed radio system |
| title_full | Experimental evaluation of 3D printed spiral phase plates for enabling an orbital angular momentum multiplexed radio system |
| title_fullStr | Experimental evaluation of 3D printed spiral phase plates for enabling an orbital angular momentum multiplexed radio system |
| title_full_unstemmed | Experimental evaluation of 3D printed spiral phase plates for enabling an orbital angular momentum multiplexed radio system |
| title_short | Experimental evaluation of 3D printed spiral phase plates for enabling an orbital angular momentum multiplexed radio system |
| title_sort | experimental evaluation of 3d printed spiral phase plates for enabling an orbital angular momentum multiplexed radio system |
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