Design of a compact triple-band metamaterial absorber with wide angle of incidence using connected resonator topology

A compact triple band metamaterial absorber is presented in this paper. The triple band absorbance is achieved by combining a meander line loaded rectangular close ring resonator with an electric field driven LC resonator within a single unit cell. A more compact unit cell having a size reduction of 14.47% and triple band absorption has been realized as an advantage over close ring metamaterial absorber. The artificially engineered structure has triple band absorbance with one band laying in C-band and another two in Ku and K band respectively. This triple band design can be used for stealth technology such as the C-band airborne radar and battlefield applications. Moreover, the absorber can perform well over a wide angle of incidence.