研究目的
Investigating the effects of a plasma Faraday shield on the performance of a patch antenna, including gain and radiation patterns, by switching ON or OFF a fluorescent lamp.
研究成果
The study demonstrates that a fluorescent lamp can act as a Faraday shield, significantly reducing the gain of a patch antenna when the plasma is ON, while maintaining good matching at the operating frequency. This reconfigurability can mitigate interference between communication systems operating at the same frequency.
研究不足
The simulation results initially did not match the measurements, requiring retro-simulation to adjust plasma parameters. The model's imperfection affects the accuracy of cross-polarization simulation results.
1：Experimental Design and Method Selection:
The study involves designing a circular patch antenna operating at 2.45 GHz enclosed in a fluorescent lamp to observe the Faraday shield effect. The Drude model is used to simulate the plasma behavior.
2：45 GHz enclosed in a fluorescent lamp to observe the Faraday shield effect. The Drude model is used to simulate the plasma behavior.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: A patch antenna is placed inside a commercial fluorescent lamp (CFL). The lamp's dimensions and the antenna's specifications are detailed.
3：List of Experimental Equipment and Materials:
A circular patch antenna, FR4 substrate, fluorescent lamp, and simulation software (CST Microwave Studio) are used.
4：Experimental Procedures and Operational Workflow:
The antenna's performance is measured with the lamp ON and OFF. Simulations are conducted to match the measurements by adjusting plasma parameters.
5：Data Analysis Methods:
The performance is analyzed in terms of gain and radiation patterns, comparing simulation and measurement results.
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