A waveguide antenna and vehicle-mounted radar

Abstract

This utility model discloses a waveguide antenna and a vehicle-mounted radar, comprising: a carrier; a carrier having a connected radiating slot and a waveguide cavity inside; the radiating slot is a molded cavity, comprising multiple sequentially connected radiating sub-slots; the waveguide cavity has a metal ridge; the waveguide cavity is a molded cavity, comprising a feed cavity and a power divider cavity; the power divider cavity comprises multiple sequentially connected sub-cavities; the feed cavity, sub-cavities, and radiating slots are connected from bottom to top; wherein, the multiple sub-cavities and the metal ridge constitute a one-to-many power divider, and the number of output paths of the one-to-many power divider is the same as the number of radiating slots and corresponds one-to-one. This technical solution sets the radiating slot and waveguide cavity as molded cavities, so that there is a parting line between the waveguide cavity and the radiating slot. Therefore, this waveguide antenna can be manufactured using a double-layer mold, and the resulting waveguide antenna has low cost, small error, and high signal transmission accuracy.

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