研究目的
To design a compact and low-profile ultra-wide bandwidth (UWB) antenna based on graphene-assembled films (GAF) for wearable applications, ensuring flexibility and robustness.
研究成果
The proposed GAF-based UWB antenna demonstrates excellent flexibility, robustness, and performance in wearable applications, with a compact size and insensitivity to bending. It shows promise for integration into wearable devices and smart clothing.
研究不足
The study focuses on the UWB range of 4.0–8.0 GHz, which may not cover all potential wearable application frequencies. The antenna's performance under extreme bending conditions beyond 75 degrees is not explored.
1:Experimental Design and Method Selection:
The antenna design incorporates a coplanar-waveguide (CPW) feeding structure with two H-shaped slots to adjust current distribution and improve bandwidth. The GAF material is used for its high conductivity and flexibility.
2:Sample Selection and Data Sources:
The GAF is fabricated from graphene oxide (GO) slurry, annealed, and compressed. The antenna prototype is fabricated using a one-step laser-direct molding engraving method.
3:List of Experimental Equipment and Materials:
Includes a Network Analyzer (Keysight N5247A), digital multimeter (Agilent U1242B), and materials like graphene oxide slurry and flexible ceramic substrate.
4:Experimental Procedures and Operational Workflow:
The antenna's performance is tested in flat and bent states, and its impedance bandwidth and radiation patterns are measured.
5:Data Analysis Methods:
The antenna's performance is analyzed using simulation software (CST STUDIO SUITE) and compared with measured results.
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