研究目的
Investigating the design of a wideband circularly polarized stacked microstrip antenna using a hybrid perturbation technique to achieve wider axial ratio bandwidth and beamwidth without the need for a complex dual feed network.
研究成果
The design of a wide bandwidth CP antenna using a hybrid perturbation technique on a stacked patch-patch configuration has been presented. The antenna achieves wide impedance and axial ratio bandwidths from a singly-fed configuration on a small ground plane, reducing system complexity and saving space. Further optimization and experimental validation are planned to confirm the simulation results.
研究不足
The study is based on simulations, and the optimized design has not been fabricated and tested to confirm the simulations. The axial ratio bandwidth, while wider than typical CP patch antennas, is still relatively narrow at 2.8%.
1：Experimental Design and Method Selection:
The study employs a hybrid perturbation technique on a stacked microstrip antenna design to achieve circular polarization. The design involves applying positive perturbations to the driven patch and negative perturbations to the parasitic patch.
2：Sample Selection and Data Sources:
The antenna design is simulated using the Finite Element Method (FEM) based electromagnetic package, Ansys HFSS, version 16.
3：List of Experimental Equipment and Materials:
0.
3. List of Experimental Equipment and Materials: The antenna consists of three metal layers and two dielectric layers, including a Rogers TMM material with relative permittivity, εr = 3.27, and thickness, h1 = 1.57 mm, and a foam layer separating the parasitic patch from the driven patch.
4：27, and thickness, h1 = 57 mm, and a foam layer separating the parasitic patch from the driven patch.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The antenna is excited by a single 50-? SMA probe. Perturbations are introduced in both driven and parasitic patches to achieve right-hand CP. The design parameters are optimized to achieve wide bandwidths.
5：Data Analysis Methods:
The performance of the antenna is evaluated based on simulated impedance bandwidth and axial ratio bandwidth, as well as the axial ratio beamwidth in both principal planes.
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