| 摘要 |
<p>A device for the power transmission of microwaves between a strip-line (12) and a number of parallel cavity waveguides (11, 20) comprised in a group antenna. Said strip-line exhibits H-shaped slots (14). These are centered in relation to a central conductor (13). Opposite each of these slots (14) a corresponding slot (15) is arranged through the wall of the cavity waveguide. Electrically conducting seals (19) are arranged to follow immediately outside the contours of the slots. Said strip-line (12) is fixedly fastened to the seals (19) and the ridge waveguide, whereby good electrical coupling is achieved. Simultaneously, small cavities are formed between the slots (14, 15). These cavities have a levelling effect such that the demands on mechanical precision is appreciably lowered, such that the tolerance to placement of the slots opposite to each other is increased substantially as compared to the case of the waveguides directly abutting said strip-line.</p> |
