研究目的
To propose and analyze a 60 GHz planar Fabry-Perot cavity antenna with circularly polarized radiation for millimeter-wave wireless systems, enhancing gain-bandwidth product using a sparse array design.
研究成果
The paper presents a novel analytical framework for circular polarized Fabry-Perot cavity antennas, demonstrating a design with enhanced gain-bandwidth product using a sparse array. Simulations confirm a peak gain of 16 dBi and 3.6 GHz bandwidth at 60 GHz, with good axial ratio performance. The trade-off between gain and bandwidth is highlighted, offering flexibility for different application requirements.
研究不足
The analytical model assumes infinite transverse dimensions for the FSS and cavity, which may not hold in practical finite-sized antennas. Loss tangents and frequency dependencies of FSS admittance are neglected initially, and the design is sensitive to fabrication tolerances, especially in Region II of parameter space.
1：Experimental Design and Method Selection:
The study employs analytical formulations based on modal representations of electromagnetic fields and transmission-line models, validated through numerical simulations using the finite elements method (FEM). A sparse array configuration with sequential rotation feeding is used to enhance performance.
2：Sample Selection and Data Sources:
The antenna design is theoretical and simulated, with no physical samples; data is derived from analytical models and full-wave simulations.
3：List of Experimental Equipment and Materials:
Software tools like Ansys HFSS for simulations; materials include Rogers RT/Duroid 6002 substrate and copper for FSS and ground plane.
4：Experimental Procedures and Operational Workflow:
Steps involve deriving analytical equations, setting up simulation models in HFSS, characterizing FSS unit cells, designing feeding networks, and analyzing radiation patterns, gain, bandwidth, and axial ratio.
5：Data Analysis Methods:
Data is analyzed using theoretical calculations and simulation outputs, with comparisons between analytical and simulated results to validate the design.
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