Development of smart EM wave absorber with heat radiating function

With the rapid progress of electronics and radio communication technology, human enjoys greater freedom in information communications. However, EMW (ElectroMagnetic Wave) environments have become more complicate and difficult to control. Thus, the international organizations, such as the American National Standard Institution (ANSI), Federal Communications Commission (FCC), the Comite Internationale Special des Perturbations Radio Electrique (CISPR), etc, have provided standards for controlling the EM wave environments and for the countermeasures of the electromagnetic compatibility (EMC). In this paper, the status of EMW absorbers and the goal of the smart EMW absorber for the future were described and discussed. Furthermore, a smart EMW Absorber with heat radiating function was suggested and designed, which has the absorption ability of more than 20 dB from 2 GHz to 2.45 GHz frequency band, and the optimum aperture (hole) size, the space between the adjacent holes, and the thickness of which were 6 mm, 9 mm, and 6.5 mm, respectively. Thus, it is respected that these results can be applied as various EMC devices in electronic, communication, and controlling systems.