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Journal Articles Advanced Photonics Research Year : 2023

Flexible Generation and Manipulation of Microwave Bottle Beam Using a Reconfigurable Metamirror

Badreddine Ratni
Peihan Qi
  • Function : Author
Jianjia Yi
  • Function : Author

Abstract

Bottle beams have drawn considerable research interest due to their attractive features and applications in beam trapping. Herein, the flexible generation and modulation of bottle beams utilizing a reconfigurable metamirror over a non‐negligible frequency band ranging from 8.5 to 9.5 GHz is investigated. A varactor diode is embedded into each meta‐atom on the metamirror enabling the achievement of a nearly 2 π phase coverage by varying the external bias voltage. Based on the caustic theory, several configurations of bottle beam with distinct radius a are realized as proof‐of‐concept validation. Besides, the flexible modulation of the operating frequency is analyzed by judiciously controlling the bias voltages applied to the metasurface. The experimental results are in good agreement with those obtained from numerical simulations. Such a flexible bottle beam generator shows good potential in the microwave regime for near‐field applications, such as imaging and power transmission.

Dates and versions

hal-04230360 , version 1 (05-10-2023)

Identifiers

Cite

Menglan Lin, Badreddine Ratni, Peihan Qi, Jianjia Yi, André de Lustrac, et al.. Flexible Generation and Manipulation of Microwave Bottle Beam Using a Reconfigurable Metamirror. Advanced Photonics Research, 2023, 4 (10), pp.2300156. ⟨10.1002/adpr.202300156⟩. ⟨hal-04230360⟩
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