研究目的
To design and analyze a defected ground stacked elliptical patch microstrip antenna (EPMA) for circular polarization (CP) with improved impedance bandwidth and axial ratio bandwidth for LTE and 4G wireless applications.
研究成果
The proposed defected ground CP antenna with stacked arrangement achieves a wide impedance bandwidth of 44.0% and a reasonable axial ratio bandwidth of 5.5% in the frequency range 1.70 -2.57 GHz. The antenna shows sustained gain response and stable radiation patterns, making it suitable for LTE and 4G wireless applications.
研究不足
The study is based on simulation results, and practical fabrication and measurement results are pending. The use of a lossy substrate (FR-4) may limit the gain of the antenna.
1：Experimental Design and Method Selection:
The study involves designing a defected ground stacked elliptical patch microstrip antenna (EPMA) for circular polarization (CP). The design includes truncating the conventional elliptical patch, inserting slots, and etching a square slot in the ground plane at a 45-degree angle. The technique of multilayer stacked patch is used to achieve higher impedance bandwidth.
2：Sample Selection and Data Sources:
The antenna is designed on a Flame Retardant (FR-4) substrate with specific material properties. The performance is simulated using IE3D electromagnetic simulation software.
3：List of Experimental Equipment and Materials:
Flame Retardant (FR-4) substrate with permittivity 4.4 and thickness 1.59mm, IE3D electromagnetic simulation software.
4：4 and thickness 59mm, IE3D electromagnetic simulation software.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The design starts with a conventional elliptical patch microstrip antenna (EPMA), which is then modified by truncation and slot insertion to achieve CP behavior. A stacked patch arrangement and defected ground technique are applied to enhance performance.
5：Data Analysis Methods:
The performance is evaluated based on impedance bandwidth (IBW), axial ratio bandwidth (ARBW), and radiation patterns.
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