A Polarization-Insensitive Dual-Band Metamaterial Absorber for High-Performance Microwave Liquid Sensing
A compact dual-band metamaterial absorber (MTM-A) for microwave sensing is proposed and numerically analyzed over 4–14 GHz. The unit cell consists of a metallic resonator and a continuous metallic ground plane, separated by an FR-4 epoxy substrate with a relative permittivity of 4.3. The optimized design exhibits near-...