| 摘要 |
PURPOSE:To reduce the length of a main waveguide in the guide axis direction, to simplify a direction adjustment mechanism and to improve the reliability by allowing an end plate for the main waveguide to support L-shaped and loop antennas and providing a Q transformation part to each antenna. CONSTITUTION:The L-shaped antenna 11 and the loop antenna 12 are supported to an end plate 2 of the main waveguide and guide axis parallel parts 11A, 12B of each antenna are connected electrically to center conductors of coaxial parts 9, 10 penetrated through the end plate 2. The tip of the loo part 12B of the antenna 12 is short-circuited to the end plate 2 and guide axis orthogonal parts 11C, 12B7 of each antenna are made orthogonal to each other. The part 11A and the guide axis parallel part 12B5 are provided respectively with Q transformation parts 15A, 17. Thus, the length of the main waveguide 1 in the guide axis direction is decreased and the selection of the position to obtain excellent isolation is facilitated.
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