Performance Analysis of Textile AMC Antenna on Body for meeting

1. Performance Analysis of Textile AMC Antenna on Body Model 2024090012

2. Introduction

3. Overview

4. Technical Specifications Antenna Structure Substrate: Pellon fabric Thickness: 3.6 mm Dielectric constant (εr): 1.8 Loss tangent (tanδ): 0.008 AMC Array Configuration: 4 × 6 array Dimensions: 102 mm × 68 mm Substrate thickness: 1.8 mm Conductive Material Material: Pure Copper Taffeta Conductivity (σ): 2.5 × 105 S/m

5. Human Body Effects Bending Analysis Performance Metrics Analysis E-Plane Bending (R = 50mm) Gain Impact: Free Space: 4.18 dBi (-44.8% vs flat AMC) On Human Model: 3.37 dBi (-19.4% vs free space bent) FBR Changes: Free Space: 17.87 (-35.6% vs flat AMC) On Human Model: 23.59 (+31.9% vs free space bent) H-Plane Bending (R = 50mm) Gain Impact: Free Space: 6.36 dBi (-16% vs flat AMC) On Human Model: 5.95 dBi (-6.4% vs free space bent) FBR Changes: Free Space: 17.04 (-38.6% vs flat AMC) On Human Model: 30.15 (+76.9% vs free space bent) Model Parameters Arm radius: 50 mm Length: 200 mm Dielectric properties: εr = 21.2 σ = 3.38 S/m at 5.8 GHz Performance Impact Resonant Frequency Shift: E-plane: -1.3% (5.94 GHz vs 5.95 GHz) H-plane: +0.17% (5.99 GHz vs 5.98 GHz) Bandwidth Stability: E-plane: +7.7% (0.42 GHz vs 0.39 GHz) H-plane: +2.4% (0.43 GHz vs 0.42 GHz) Free Space Performance Gain Enhancement: Without AMC: 3.96 dBi With AMC: 7.57 dBi Improvement: 3.61 dBi (91.2% increase) Front-to-Back Ratio (FBR): Without AMC: 15.16 With AMC: 27.75 Improvement: 12.59 (83% increase) Bandwidth Analysis: Without AMC: 3.50 GHz With AMC: 0.56 GHz Trade-off: 84% reduction in bandwidth

6. E-Plane Bending (R = 50mm) • Gain Impact: • Free Space: 4.18 dBi (-44.8% vs flat AMC) • On Human Model: 3.37 dBi (-19.4% vs free space bent) • FBR Changes: • Free Space: 17.87 (-35.6% vs flat AMC) • On Human Model: 23.59 (+31.9% vs free space bent) • H-Plane Bending (R = 50mm) • Gain Impact: • Free Space: 6.36 dBi (-16% vs flat AMC) • On Human Model: 5.95 dBi (-6.4% vs free space bent) • FBR Changes: Free Space: 17.04 (-38.6% vs flat AMC) • On Human Model: 30.15 (+76.9% vs free space bent)

7. H-Plane Bending (R = 50mm) Gain Impact: Free Space: 6.36 dBi (-16% vs flat AMC) On Human Model: 5.95 dBi (-6.4% vs free space bent) FBR Changes: Free Space: 17.04 (-38.6% vs flat AMC) On Human Model: 30.15 (+76.9% vs free space bent)

8. Human Body Effects • Model Parameters • Arm radius: 50 mm • Length: 200 mm • Dielectric properties: • εr = 21.2 • σ = 3.38 S/m at 5.8 GHz • Performance Impact • Resonant Frequency Shift: • E-plane: -1.3% (5.94 GHz vs 5.95 GHz) • H-plane: +0.17% (5.99 GHz vs 5.98 GHz) • Bandwidth Stability: • E-plane: +7.7% (0.42 GHz vs 0.39 GHz) • H-plane: +2.4% (0.43 GHz vs 0.42 GHz)

9. Critical Analysis Strengths Design Innovation: Integration of textile materials Practical form factor Body-worn compatibility Performance: Significant gain improvement Enhanced FBR Stable body-worn operation Limitations Technical Constraints: Bandwidth reduction Size considerations Single-band operation Practical Considerations: Manufacturing complexity Environmental durability Long-term reliability Technical Achievements Radiation Pattern Optimization Transformation from dipole-like to quasi-hemispherical pattern Enhanced directional characteristics Improved body isolation Impedance Matching Maintained S11 < -10 dB at 5.8 GHz Stable performance under deformation Effective body-antenna isolation

10. Future Research Directions • Material Optimization: • Alternative textile substrates • Improved conductivity • Environmental protection • Performance Enhancement: • Bandwidth improvement • Miniaturization techniques • Multi-band operation • Implementation: • Manufacturing processes • Integration methods • Reliability testing Conclusions Key Contributions Successful textile AMC antenna implementation Comprehensive deformation analysis Effective body isolation solution Impact Advances in wearable technology Practical design guidelines Foundation for future development