研究目的
To design a circularly polarized microstrip patch antenna at 2.45 GHz using characteristic mode theory and the shape super-formula, without the need for optimization software.
研究成果
The proposed method successfully designs a circularly polarized microstrip patch antenna at 2.45 GHz with low axial ratio (0.05 dB) without optimization software. The antenna exhibits good impedance bandwidth and radiation patterns suitable for WiFi and ISM band applications, demonstrating the effectiveness of combining super-formula and characteristic mode theory for antenna design.
研究不足
The method relies on specific software (CST MWS) for characteristic mode analysis, and the design is tailored for 2.45 GHz ISM band, which may limit applicability to other frequencies. The use of FR4 substrate with inherent losses could affect performance.
1：Experimental Design and Method Selection:
The methodology involves using characteristic mode theory to analyze and modify antenna shapes for circular polarization. The super-formula is employed to generate nature-inspired shapes.
2：Sample Selection and Data Sources:
A tear-drop patch antenna is designed using the super-formula with specific parameters (a=b=m=n2=n3=1, n1=
3：5, k=26). List of Experimental Equipment and Materials:
FR4 substrate with dielectric constant 4.6, loss tangent 0.024, height 1.6mm; CST MWS software for characteristic mode analysis; coaxial probe feed.
4：6, loss tangent 024, height 6mm; CST MWS software for characteristic mode analysis; coaxial probe feed. Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The initial tear-drop shape is modified by adding an elliptical cut to adjust current paths. The feed location is determined based on characteristic mode analysis. A prototype is fabricated and measured for S11, axial ratio, and radiation patterns.
5：Data Analysis Methods:
Data is analyzed using CST MWS software for simulation and measurements for validation.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
