| Summary: | Wireless Power Transfer (WPT) technologies utilize electromagnetic fields or radio-frequency
signals to transmit electrical energy through air or other mediums. However, the high-power
output frequently induces electromagnetic interference (EMI) and noise, which can significantly
impact the performance of nearby electronic devices and reduce overall system efficiency. To
effectively mitigate these disturbances, this thesis proposes employing Frequency Selective
Surfaces (FSS) to create active shielding panels customized for specific frequency bands.
We have developed an optimized Jerusalem Cross Frequency Selective Surface (JC-FSS) unit
structure to minimize the size of shielding panels, particularly effective at the resonance
frequency of 13.56MHz. Using HFSS simulation software, we have designed 2D and 3D WPT
systems operating at this frequency, integrating FSS active shielding panels to evaluate their
performance in practical applications. Additionally, this study comprehensively compares FSS
active shielding technology with traditional passive shielding methods, such as ferrite and
aluminum panels. Simulation results demonstrate that FSS shielding panels effectively prevent
electromagnetic radiation leakage at the specified frequency, significantly enhancing the quality
factor and overall performance of wireless charging systems compared to traditional shielding
methods.
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