—In this paper, the authors have proposed a novel ultra-thin meta-material absorber (MTA) characterized from 1 to 12 GHz. The MTA is designed and the physics of the same is presented. To show the utility of the MTA as the future material for the conventional chambers, a compact chamber (CC) measuring (L × B × H ): 0.4 × 0.4 × 0.3 m3 is designed. The radiation pattern of the monopole antenna having a resonating frequency at 3 GHz is used to compare the CC performance with the MTA lining. From the 3D-radiation pattern and simulated gain of the antenna, it is observed that the CC with the MTA lining can produce the same results as the free space. This solution open direction to use the MTA as the potential absorbing material for future chambers, which require antenna characterization for the frequency band, i.e., 1-12 GHz