| 摘要 |
PURPOSE:To exhibit an effective electromagnetic wave shielding function by applying a twist to a conductor piece having an electromagnetic wave shield effect against a radar searching a moving target only such as Doppler radar in the lengthwise direction to form the conductor piece to a propeller form. CONSTITUTION:The propeller structure is attained by applying a twist in the lengthwise direction. The conductor piece 1 having the constitution like this is thrown into air by using a means such as scattering device. The propeller formed structur provides the turning movement in addition to a slow falling movement at falling. Thus, the electromagnetic wave radiated from a Doppler radar or the like detecting only the moving target and the electromagnetic wave radiated from a conventional radar are shielded. |
