Design of a composite metamaterial toward perfect microwave absorption and excellent load-bearing performance

A Lay-up-Oriented CFRP-Substrate Metamaterial Absorber with High Insensitivity to Polarization

“…[9][10][11]15,16] By designing the structures and dimensions of MMAs, their EM wave absorption behaviors can be effectively adjusted. [17][18][19][20][21][22] Recently, carbon-fiber-reinforced-polymer (CFRP)-substrate metamaterial absorbers, which are called meta-CFRPs, [23] have gradually attracted attention for their excellent comprehensive properties. [5,24] This new type of MMAs not only inherits the outstanding mechanical properties of CFRP composites but also brings more EM design freedoms for MMAs, which are mainly derived from the high designability of CFRP composites in both mechanical and EM aspects.…”

“…[5,24] This new type of MMAs not only inherits the outstanding mechanical properties of CFRP composites but also brings more EM design freedoms for MMAs, which are mainly derived from the high designability of CFRP composites in both mechanical and EM aspects. [4,5,23,24] However, different from traditional MMAs with an isotropic substrate, meta-CFRPs with a highly anisotropic CFRP substrate are facing challenges in acquiring polarization-insensitive absorption. [25,26] For traditional MMAs, as shown on the left side of Fig.…”

“…As there is no transmission in our case, the absorptivity can be simplified to 𝐴 = 1 − 𝑅. [23] Traditional MMA with ring patch The numerical design is performed with assistance of a full-wave EM simulation software [ANSYS, highfrequency structure simulator (HFSS)]. Transverse-electric (TE) waves are vertically incident on the designed meta-CFRP model while the electric field rotates around the 𝑥-𝑦 plane for modeling microwaves under different polarization angles.…”