研究目的
To design a pattern reconfigurable antenna with wide scan angle, high gain, good directivity, low profile, and small volume using a meta-surface controlled by PIN diode switches.
研究成果
The proposed antenna achieves wide-angle pattern reconfiguration with high gain and good directivity in a low-profile, small-volume design. It operates effectively from 4.95GHz to 5.05GHz, with the main lobe direction switchable among -45°, 45°, and 0°. This design has potential applications in devices requiring reduced electromagnetic interference and weight.
研究不足
The working frequency band is narrow (4.95GHz to 5.05GHz), and the design relies on specific PIN diode switches and dielectric materials, which may limit adaptability to other frequencies or environments. The antenna's performance in real-world applications, such as interference or durability, is not extensively tested.
1：Experimental Design and Method Selection:
The antenna is designed with three metal layers and two dielectric layers, using a meta-surface (MS) for pattern reconfiguration controlled by PIN diode switches. High Frequency Structure Simulator is used for simulation.
2：Sample Selection and Data Sources:
The antenna structure is fabricated and simulated, with specific dimensions and materials chosen (e.g., Arlon DiClad 880 and Arlon 25N dielectric layers).
3：List of Experimental Equipment and Materials:
Includes PIN diode switches (MA4AGBLP912), dielectric materials (Arlon DiClad 880 with loss tangent 0.0009 and relative permittivity 2.2, Arlon 25N with relative permittivity 3.38), and simulation software (High Frequency Structure Simulator).
4：0009 and relative permittivity 2, Arlon 25N with relative permittivity 38), and simulation software (High Frequency Structure Simulator).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The antenna is constructed with layers: top MS layer with PIN diodes, middle ground layer with slots, bottom feed line. Three states of PIN switches are defined (State I: all on, State II: switches on lines 1-3 off and 4-6 on, State III: switches on lines 1-3 on and 4-6 off). Patterns and return loss are measured and simulated at frequencies from 4.95GHz to 5.05GHz.
5：95GHz to 05GHz.
Data Analysis Methods:
5. Data Analysis Methods: Simulation results are analyzed for pattern direction, gain, directivity, and frequency band performance using the High Frequency Structure Simulator.
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