Substrate integrated waveguide comb-shaped power distributor

Abstract

The invention discloses a substrate integrated waveguide comb power distributor relating to millimeter wave and microwave devices, comprising a medium substrate equipped with metal patches on the two sides, where the medium substrate is equipped with a waveguide as input end and waveguides as output ends which at least comprise first output end and second output end, the waveguide as input end intersects the waveguide as output end, and the above waveguides are composed of at least two metallized through holes. And it adopts a comb structure, smaller in size, and simultaneously the character that the adjacent output ends are phase- inverted further compresses space between output ports, and thus the its size is reduced by above 50% as compared with the traditional tree power distributor. Because the top and bottom metal coatings and the metallized through holes compose a closed structure with respect to electromagnetic wave in operating frequency range, the electromagnetic energy can not diffuse outside the structure and it has low loss property.

Description

technical field [0001] The invention relates to a millimeter wave and microwave device, in particular to a comb-shaped power divider using substrate integrated waveguide technology. Background technique [0002] In the existing microwave slot array antennas, rectangular waveguides are often used as the combination of waveguide structures and tree-like power dividers, which not only requires high processing precision of metal components, but also has low integration, and is not easy to produce on a large scale. Therefore, A substrate-integrated waveguide slot array antenna that also uses a tree-like power divider as a feed network to meet the needs of mass production and integration. However, the size of the tree-like power divider used as a feed network is too large. Defects are still unavoidable, thereby reducing the aperture efficiency of the entire antenna array. Compared with the traditional tree power divider, the comb power divider proposed in the present invention has...

AI Technical Summary

Problems solved by technology

[0002] In the existing microwave slot array antennas, rectangular waveguides are often used as the combination of waveguide structures and tree-like power dividers, which not only requires high processing precision of metal components, but also has low integration, and is not easy to produce on a large scale. Therefore, A substrate-integrated waveguide slot array antenna that also uses a tree-like power divider as a feed network to meet the needs of mass production and integration. However, the size of the tree-like power divider used as a feed network is too large. Defects are still unavoidable, thereby reducing the aperture efficiency of the entire antenna array. Compared with the traditional tree power divider, the comb power divider proposed in the present invention has a size reduction of more than 50% (in the case of four output ports), And as the number of output ports increases, the size advantage of this comb-shaped power divider will become more obvious. If the large-scale antenna array feed network uses this comb-shaped power divider as the feed network, the overall The degree of size reduction can exceed 90%.

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