Scattering properties of cylindrical ferrite posts and their applications

The scattering field of a ferrite post and a cylindrical ferrite post conta ining conducting post illuminated by a plane wave is analyzed. The special interest is the scattering property of the ferrite posts, which is resonati ng at certain modes such as TM11 mode. We hope to know the speciality it sh ows and find its applications. It is found that the scattering field patter n of a resonating ferrite post is similar to the rotation of the scattering field pattern of a dielectric cylindrical post, which has the same dimensi on as ferrite. The scattering properties of the ferrite may give us some in spirations to explore its applications in microwave components. This proper ty is utilized to explain the mechanism of the operation of the circulators . It also may be used in microstrip patch antenna, coupler and filter to co ntrol their properties. Other applications may be possible too. Some calcul ation results are presented.