Enhancing RF Transmission and Shielding Performance Using Glass-Based Frequency-Selective Surfaces : RF 전송 및 차폐 능력 개선을 위한 유리 기반 주파수 선택 표면

다국어 초록 (Multilingual Abstract)

This dissertation presents the design and application of frequency-selective surfaces (FSS) to enhance electromagnetic shielding and RF transmission in glass-based systems. First, transparent FSS designs utilizing Ag Metal Mesh patterns are developed to address the limitations of traditional shielding methods. The proposed designs achieve high optical transparency (85%) and shielding effectiveness exceeding 50 dB below 1 GHz, while maintaining visibility and enabling precise frequency-selective EMI shielding. Simulation and experimental results confirm the effectiveness of these designs in improving electromagnetic performance. Building on this foundation, the research extends to Low-E glass, which suffers from significant RF signal attenuation due to its metallic coatings, despite its superior thermal insulation. Advanced FSS patterns, including double-grid slots, fractal geometries, and laminated configurations, are applied to enhance RF performance while preserving the thermal and optical properties of Low-E glass. At 4.5 GHz, the designs achieve an absorption rate of 90%, and within the 1.9–2.7 GHz range, transmission efficiencies exceed -3 dB. These findings demonstrate the feasibility of FSS as a practical solution for applications requiring both energy efficiency and electromagnetic functionality.

목차 (Table of Contents)

• I. General Introduction 1
• Ⅱ. Transparent Shielding Glass with Ag Metal Mesh FSS 3
• 2.1 Introduction 3
• 2.2 The Electromagnetic Shielding Effectiveness of Glass 5
• 2.3 Analysis of Glass-Based FSS 6
• 2.4 Transparent FSS: Design and Applications 9
• 2.5 Fabrication and experimental results 17
• 2.6 Conclusion 21
• Ⅲ. RF Optimization with Low-E Glass and FSS 22
• 3.1 Introduction 22
• 3.2 Analytical Framework for Double Grid Slot Pattern 24
• 3.3 Characteristic of Low-e based FSS 28
• 3.3.1 Grid Slot Pattern and Optimization 29
• 3.4 Low-E glass based Laminated glass 33
• 3.4.1 Grid Slot Pattern and Optimization 35
• 3.4.2 Laminated Low-E Glass-Based FSS with Fractal Design 39
• 3.4.3 Laminated Low-E Glass-Based FSS with wide bandwidth 41
• 3.5 Double glazed Low-E glass 46
• 3.6 Fabrication and Measurement Results 48
• 3.7 Conclusion 52
• 3.8 Future work 54
• Summary in Korean 55
• References 56
• Curriculum Vitae 61