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Modularized Reconfigurable Functional Electromagnetic Surfaces Using Tightly Coupled Antennas and Back-Loaded Radio
Boyu Sima1, Jiayi Gong1, Zhenghu Xi2
1Key Laboratory of Near-Range RF Sensing ICs and Microsystems (NJUST), Ministry of Education, School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Micromachines
|January 8, 2025
Summary
This study introduces a modular electromagnetic surface capable of broadband absorption and polarization conversion. This reconfigurable surface utilizes tightly coupled dipole antennas and radio frequency circuits for versatile electromagnetic control.
Area of Science:
- Electromagnetic Metamaterials
- Antenna Engineering
- Microwave Engineering
Background:
- Electromagnetic surfaces are crucial for advanced applications like stealth and communication.
- Existing designs often lack reconfigurability and broadband performance.
- Modular designs offer flexibility but require careful integration of components.
Purpose of the Study:
- To develop a modularized reconfigurable functional electromagnetic surface (MRFES).
- To achieve simultaneous broadband absorption and polarization conversion.
- To enable diverse electromagnetic control functions through modular circuit replacement.
Main Methods:
- Design of a dual-polarized antenna array with tight coupling.
- Integration of back-loaded radio frequency circuits (BLRFC) for functional switching.
- Modularization strategy for easy replacement of RF circuits.
Main Results:
- Achieved broadband absorption (4.14-12.4 GHz) and polarization conversion (4.4-12.9 GHz).
- Demonstrated dual-polarization absorption and conversion capabilities.
- Verified modular reconfigurable functions through simulations and experiments.
Conclusions:
- The proposed MRFES offers versatile broadband absorption and polarization conversion.
- Modular design facilitates diverse electromagnetic control functionalities.
- Promising applications in active stealth, adaptive camouflage, and intelligent communication.
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