Patent ID: 7002429
Filing Date: 2006-02-21
Classification: H01P

Abstract:
1. A nonreflective waveguide terminator comprising: a waveguide portion having a rectangular opening in a plane perpendicular to a radio-wave propagation direction, said waveguide portion having one open end in the radio-wave propagation direction and the other end closed by a terminating metal internal wall, said waveguide portion having a radio-wave propagation space surrounded by a first metal internal wall and a second metal internal wall opposite thereto which include the shorter sides of the rectangular opening and which are parallel to a radio-wave electric field, and a third metal internal wall and a fourth metal internal wall opposite thereto which include the longer sides of the rectangular opening and which are perpendicular to the radio-wave electric field; and an electromagnetic wave absorber whose exterior shape is a parallelepiped, said electromagnetic wave absorber having a rectangular rear-end surface which is positioned at a predetermined distance from the terminating metal internal wall and parallel to the terminating metal internal wall, the surface of said electromagnetic wave absorber, which has the largest rectangular area, being on one of the third metal internal wall and the fourth metal internal wall.