| 摘要 |
PURPOSE:To miniaturize a device by constituting four rectangular waveguides of a rotating part of the standard waveguide part of both edge parts, the thin type waveguide part of an intermediate part and an impedance converting part to connect both and intersecting them at the part of the thin waveguide. CONSTITUTION:At a housing 10, standard rectangular waveguides 12-15 provided with a 90 deg. guide shaft are in the surface in which the H surface is vertical to a cylinder shaft. At a rotating part 1, guides 2 and 5 are a straight line wave guide and rectangular waveguides 3 and 4 are 90 deg. bent waveguides out of rectangular waveguides 2-5. These respective waveguides are composed of standard waveguide parts 2c-5c to form both edge parts, thin waveguide parts 2a-5a to form an intermediate part and impedance converting parts 2b-5b to connect both, the H surface is in the surface vertical to a rotating shaft 11 and the guide 5 and the guides 2, 3 and 4 are provided so as to intersect at the part of the thin waveguide. For this reason, the guide 5 is provided approximately in a straight line shape. Thus, the dimension of the rotating shaft direction of the rotating part 1 comes to be smaller. Further, since impedance converting parts are equipped, a satisfactory VSWR characteristic can be obtained.
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