Quadruple X Shaped Rotational Symmetric Metamaterial Absorber for C and X Band Applications

A quadruple X-shaped rotational symmetric dual band absorber is designed here for SATCOM, amateur radio, and radar monitoring applications. We get single negative (SNG) values at $7.68 \mathrm{GHz}, 9.15 \mathrm{GHz}$, and 10.56 GHz, with the maximum absorption being over $\mathbf{9 9 \%}$. Ensured subwavelength size with good effective medium ratio (EMR) and compact size make it useful to use in sensor, Radar Cross-Section Reduction. A $0.23 \lambda \times 0.23 \lambda$ dimensioned patch was designed with a negative refractive index and permeability near zero, providing maximum absorption with polarization and incident angle insensitivity. The transverse electromagnetic (TEM) mode has been used to measure the result and then compare the result with recent relevant work to prove its potential.