Body-Centered Double-Square Split-Ring Enclosed Nested Meander-Line-Shaped Metamaterial-Loaded Microstrip-Based...

Area of Science:

• Metamaterials and Electromagnetics
• Microwave Engineering
• Material Science

Background:

• Metamaterial structures enable strong localization of electric and magnetic fields, opening new possibilities for microwave radiation fields.
• Enhancing sensitivity in material characterization is crucial for developing advanced sensors and devices.

Purpose of the Study:

• To design and analyze a novel metamaterial resonator for highly sensitive material characterization.
• To investigate the field enhancement and localization properties of the proposed metamaterial structure.
• To evaluate the sensor's performance for materials with low permittivity values.

Main Methods:

• A double split ring enclosed nested meander-line-shaped metamaterial resonator was designed on a dielectric substrate.
• Electromagnetic field localization and enhancement were achieved through tailored metallic design and subwavelength arrangement.
• Simulations were performed using CST Microwave Studio to extract scattering parameters and effective medium properties.
• Optimization techniques were employed to enhance design compactness and performance.

Main Results:

• The metamaterial sensor demonstrated high sensitivity in characterizing different dielectric materials, particularly those with low permittivity.
• Numerical analysis of frequency deviation against dielectric constants showed excellent agreement with linear regression (R² = 0.9894 for sensitivity).
• A high figure of merit (R² = 0.9978) was achieved, indicating superior sensing capabilities.

Conclusions:

• The proposed metamaterial resonator offers a promising approach for sensitive and accurate material characterization in the microwave range.
• The design's ability to enhance electromagnetic field localization contributes to its high sensing performance.
• This work paves the way for developing compact and efficient metamaterial-based sensors for various applications.