Microwave demonstration of Purcell effect enhanced radiation efficiency
Abstract We experimentally demonstrate a Purcell effect-based design technique for improved impedance matching, and thus enhanced the reflection coefficient from a small microwave emitter. Using an iterative process centred on comparing the phase of the radiated field of the emitter in air with that...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-03-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-32066-w |
| _version_ | 1797853831634092032 |
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| author | L. D. Stanfield A. W. Powell S. A. R. Horsley J. R. Sambles A. P. Hibbins |
| author_facet | L. D. Stanfield A. W. Powell S. A. R. Horsley J. R. Sambles A. P. Hibbins |
| author_sort | L. D. Stanfield |
| collection | DOAJ |
| description | Abstract We experimentally demonstrate a Purcell effect-based design technique for improved impedance matching, and thus enhanced the reflection coefficient from a small microwave emitter. Using an iterative process centred on comparing the phase of the radiated field of the emitter in air with that of the emitter in a dielectric environment, we optimise the structure of a dielectric hemisphere above a ground plane surrounding a small monopolar microwave emitter in order to maximise its radiation efficiency. The optimised system shows very strong coupling between the emitter and two omnidirectional radiation modes at 1.99 GHz and 2.84 GHz, yielding Purcell enhancement factors of 1762 and 411 times increase respectively, and near perfect radiation efficiency. |
| first_indexed | 2024-04-09T19:57:09Z |
| format | Article |
| id | doaj.art-0d085346d0e24bbdbfd116a096718100 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T19:57:09Z |
| publishDate | 2023-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-0d085346d0e24bbdbfd116a0967181002023-04-03T05:24:34ZengNature PortfolioScientific Reports2045-23222023-03-011311710.1038/s41598-023-32066-wMicrowave demonstration of Purcell effect enhanced radiation efficiencyL. D. Stanfield0A. W. Powell1S. A. R. Horsley2J. R. Sambles3A. P. Hibbins4Department of Physics and Astronomy, University of ExeterDepartment of Physics and Astronomy, University of ExeterDepartment of Physics and Astronomy, University of ExeterDepartment of Physics and Astronomy, University of ExeterDepartment of Physics and Astronomy, University of ExeterAbstract We experimentally demonstrate a Purcell effect-based design technique for improved impedance matching, and thus enhanced the reflection coefficient from a small microwave emitter. Using an iterative process centred on comparing the phase of the radiated field of the emitter in air with that of the emitter in a dielectric environment, we optimise the structure of a dielectric hemisphere above a ground plane surrounding a small monopolar microwave emitter in order to maximise its radiation efficiency. The optimised system shows very strong coupling between the emitter and two omnidirectional radiation modes at 1.99 GHz and 2.84 GHz, yielding Purcell enhancement factors of 1762 and 411 times increase respectively, and near perfect radiation efficiency.https://doi.org/10.1038/s41598-023-32066-w |
| spellingShingle | L. D. Stanfield A. W. Powell S. A. R. Horsley J. R. Sambles A. P. Hibbins Microwave demonstration of Purcell effect enhanced radiation efficiency Scientific Reports |
| title | Microwave demonstration of Purcell effect enhanced radiation efficiency |
| title_full | Microwave demonstration of Purcell effect enhanced radiation efficiency |
| title_fullStr | Microwave demonstration of Purcell effect enhanced radiation efficiency |
| title_full_unstemmed | Microwave demonstration of Purcell effect enhanced radiation efficiency |
| title_short | Microwave demonstration of Purcell effect enhanced radiation efficiency |
| title_sort | microwave demonstration of purcell effect enhanced radiation efficiency |
| url | https://doi.org/10.1038/s41598-023-32066-w |
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