Novel Metamaterial Based on the Concept of Autonomous Control System of Living Cell and its EMC Applications

To develop an ultimate material similar to "autonomous control system of living cell" capable of responding to electromagnetic waves and of changing its material constants, autonomous control metamaterial (ACMM) has been thus far proposed. After introducing the fundamental concept of ACMM and its basic characteristics, new configurations of 3D ACMM are proposed. As an application example of new 3D ACMM, microwave absorbers are taken up. A roadblock to break through for the present metamaterial is to construct ACMM which can change matching frequency characteristics broadly and obtain broad matching characteristics. To resolve these problems, an ACMM composed of a double layer is newly proposed. The matching frequency can be changed broadly more than 1.3 GHz in a bandwidth by controlling both PIN diode bias voltages on the first and second layer.