| 摘要 |
A switchable polarizer assembly, having a coupler, a polarizer module with a plurality of apertures, each aperture adapted for a desired transition, an antenna adapter and a central waveguide with a center longitudinal axis passing through the coupler and the antenna adapter. Positioned inline with the central waveguide, between the coupler and the antenna adapter, the polarizer module is offset relative to the center longitudinal axis, rotatable to alternatively align each of the plurality of apertures with the central waveguide. A coupling means may be present to couple rotation of the polarizer module to rotation of the antenna adapter. The apertures may be, for example, zero or ninety degree angular transitions and or circular to rectangular waveguide cross sectional area transitions.
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