研究目的
To design a broadband circularly polarized microstrip patch antenna for X-Band applications, achieving wide impedance and axial ratio bandwidths with a simple structure.
研究成果
The proposed antenna achieves a broadband impedance bandwidth of 5.8 GHz (9.8–15.6 GHz) and an axial ratio bandwidth of 7.3 GHz (8.7–16 GHz) with circular polarization, making it suitable for X-Band applications. The design is compact and simple, with improved gain through optimized L-shaped strips. Future work could include experimental verification and further miniaturization.
研究不足
The study is based on simulations only, without experimental validation. The antenna's performance in real-world conditions, such as environmental factors or manufacturing tolerances, is not assessed. Optimization may be needed for specific applications.
1：Experimental Design and Method Selection:
The antenna design involves modifying a rectangular patch to an octagonal shape, using a finite ground plane with an L-shaped slot and orthogonal L-shaped strips to achieve broadband and circular polarization. The design is simulated using ANSYS HFSS software.
2：Sample Selection and Data Sources:
The antenna is designed and simulated; no physical samples or external datasets are used.
3：List of Experimental Equipment and Materials:
Substrate material is Rogers RT/Duroid 5880 with dimensions W × L × h, relative permittivity 2.2, and loss tangent 0.02. Simulation software is ANSYS HFSS.
4：2, and loss tangent Simulation software is ANSYS HFSS.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The antenna geometry is created in HFSS, with parameters optimized through simulation. Steps include patch truncation, slot and strip placement, and parameter variation for bandwidth and gain improvement.
5：Data Analysis Methods:
Simulation results for S11 parameter, axial ratio, gain, radiation patterns, and surface current distribution are analyzed to evaluate performance.
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