研究目的
To design a compact broadband circularly polarized monopole antenna with wide impedance and axial ratio bandwidths for UWB wireless and satellite communication systems.
研究成果
The proposed compact CP monopole antenna achieves ultra-wide impedance and axial ratio bandwidths with good radiation characteristics, making it suitable for UWB wireless and satellite communication systems. Future work could focus on further miniaturization or enhancing unidirectional radiation.
研究不足
The antenna has a bidirectional radiation pattern, which may not be suitable for all applications requiring unidirectional radiation. The use of FR4 substrate with loss tangent 0.02 could introduce some losses, and the design is specific to the optimized parameters, potentially limiting scalability.
1：Experimental Design and Method Selection:
The antenna was designed using a modified C-shaped patch and an improved ground plane with triangular stubs to achieve broadband circular polarization. Electromagnetic simulation software HFSS 15 was used for optimization.
2：Sample Selection and Data Sources:
A prototype antenna was fabricated on a 1 mm-thick FR4 substrate with dielectric constant
3：4 and loss tangent List of Experimental Equipment and Materials:
FR4 substrate, microstrip feed line, vector network analyzer (N5230), microwave anechoic chamber, standard gain horn antenna.
4：Experimental Procedures and Operational Workflow:
The antenna was fabricated based on optimized dimensions. S11 and axial ratio were measured using a vector network analyzer and anechoic chamber. The axial ratio was measured by rotating a linearly polarized receiving antenna and recording values to determine polarization pattern.
5：Data Analysis Methods:
Simulated and measured results for S11, axial ratio, radiation patterns, and gain were compared to validate performance.
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
