| 摘要 |
PURPOSE:To attain excellent matching over a broad band by inserting a rectangular waveguide near square form and a long elliptic waveguide for the conversion from the rectangular waveguide into the circular waveguide. CONSTITUTION:The shape of cross section of the long elliptic waveguide 5 is as shown in Fig. (b) and close to the shape of cross section of the rectangular waveguide 1 to be converted as shown in Fig. (a). On the other hand, the rectangular waveguide 6 connected to the circular waveguide 2 to be converted as shown in Fig. (d) has the shape of cross section close to a square in matching with the shape of cross section of the circular waveguide 2 as shown in Fig. (c). Thus, the conversion between both said waveguides is conducted very smoothly. Moreover, the long elliptic waveguide 5 and the rectangular waveguide 6 close to a square are in the relation of shape as shown in Figs. (b) and (c) and the conversion of both is conducted smoothly. As a result, the rectangular-circular waveguide converter constituted above has a broad band matching characteristic. |
