Coding Metamaterial Analysis Based on 1-Bit Conventional and Cuboid Design Structures for Microwave Applications.

Area of Science:

• Metamaterials
• Electromagnetics
• Microwave Engineering

Background:

• 1-bit coding metamaterials utilize binary elements ('0' and '1') with distinct phase responses (0° and 180°).
• These metamaterials are crucial for applications requiring controlled electromagnetic wave manipulation, such as radar cross-section reduction.

Purpose of the Study:

• To investigate compact 1-bit coding metamaterial designs with conventional and cuboid shapes.
• To analyze their bistatic scattering patterns and monostatic radar cross-section (RCS) for microwave applications.

Main Methods:

• Simulations performed using Computer Simulation Technology (CST) software on FR-4 substrate (dielectric constant 4.3, tangent loss 0.025).
• Elements selected via trial-and-error based on phase response properties.
• Validation of CST results by comparing with analytical data from HFSS software.

Main Results:

• Conventional coding metamaterial designs showed lowest RCS values with increasing lattices.
• A cuboid-shaped design with 20 lattices achieved an optimized bistatic scattering pattern of -8.49 dBm².
• Monostatic RCS values were reduced between -30 to -10 dBm² within the 12 to 18 GHz frequency range.

Conclusions:

• The proposed conventional and cuboid-shaped 1-bit coding metamaterial designs are suitable for microwave applications.
• The study highlights the effectiveness of these designs in reducing radar cross-section and optimizing scattering patterns.
• The unique phenomenon observed in these metamaterial designs represents a novel contribution to the field.