Small-size metamaterial perfect absorber operating at low frequency

Son Tung Bui, Van Khuyen Bui, Van Dung Nguyen, YoungJoon Yoo, Ki Won Kim, Dinh Lam Vu and YoungPak Lee

Abstract

A small-size metamaterial perfect absorber operating at low frequency is proposed. Due to the special design, the unit-cell dimension with respect to wavelength is very small, a/λ ~ 1/17, at the absorption frequency of 377 MHz. The absorption frequency is strongly dependent on the length of zigzag wire. In addition, the absorption is more than 94% in a wide range of incident angle of electromagnetic wave up to 50°. The results show that the proposed absorber is promising to be applied into devices in radio region