ELECTROMAGNETIC WAVE ABSORBING BODY AND METHOD FOR ABSORBING THE SAME

摘要

PROBLEM TO BE SOLVED: To widen an electromagnetic wave absorbance band and to make an electromagnetic wave absorbing body thinner. SOLUTION: A specific band reflective antenna film where many linear antenna elements of the same shape are formed with a constant density on the same plane for reflecting only an electromagnetic wave in a specific band is provided between a resistance film where a part of incoming electromagnetic wave is reflected while another part transmits and a reflective film which reflects the in-coming electromagnetic wave. A split conductor layer is provided between the resistance film and an antenna layer while a magnetic body layer is provided between the antenna layer and the reflective film. The electromagnetic wave of a frequency f1, in the specific band, which arrives at an electromagnetic wave absorbing panel is absorbed as the phase of an electromagnetic wave Er11 reflected on the resistance film is opposite to that of an electromagnetic wave Er21 reflected on the specific band reflective antenna film. The electromagnetic wave of frequency f2, in a prescribed band different from the specific band, which arrives at the electromagnetic wave absorbing panel is absorbed as the phase of the electromagnetic wave Er12 reflected on the resistance film is opposite to that of an electromagnetic wave Er22 reflected on the reflective film.