1-1hit |
Kuniaki YOSHITOMI Takeshi MOMII
The radiation characteristics of a rectangular waveguide with a flange coated with an absorbing material is studied. The impedance boundary condition is applied at the surface of the coated flange. From the numerical results, it is found that the coated flange reduces the maximum amplitude of the radiation field and makes the half-power beamwidth narrow in the E-plane.