Beam-Steerable Fabry–Pérot Cavity Antenna with Reconfigurable Liquid-Based PRS
The design of a beam steering antenna with a reconfigurable liquid-based metamaterial as a Partially Reflective Surface (PRS) in a Fabry–Pérot cavity (FPC) configuration is presented in this letter. The proposed system is based on a two-layer structure having a source antenna a...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2025-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/11072472/ |
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| Summary: | The design of a beam steering antenna with a reconfigurable liquid-based metamaterial as a Partially Reflective Surface (PRS) in a Fabry–Pérot cavity (FPC) configuration is presented in this letter. The proposed system is based on a two-layer structure having a source antenna and metamaterial containing, 3D-printed Polylactic Acid (PLA) liquid channels, along with a <inline-formula> <tex-math notation="LaTeX">$9\times 9$ </tex-math></inline-formula> square ring elements metamaterial. Beam steering is achieved by varying the reflection amplitude of the reconfigurable metamaterial through the injection of liquid. A prototype of the beam-steering system, operating at 8 GHz, has been fabricated and measured. It achieves beam steering in the range of ±35° for different configurations, with a realized gain of over 10 dBi in each configuration. There is good agreement between simulated and measured results, making the system a good candidate where beam steering with consistent gain is required at low cost and compact size. |
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| ISSN: | 2169-3536 |