Abstract: International audience; A microwave ultra-broadband polarization independent metamaterial absorber in the UHF/SHF frequency bands is presented. As a first task, we enhanced the relative absorptive bandwidth of the conventional pyramidal absorber making the altitude curved. Such modification increased the Relative Absorptive Bandwidth (RAB) from 36% to 70.45% with an absorptive level greater than 90%. In addition, we focused on another task by which we aimed to have an ultra-broadband of absorption in UHF/SHF region. In this manner, we present t...
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Topics: 
Optics
Optoelectronics