A ridge waveguide slot antenna and device

By designing a stacked structure of a radiating layer, a coupling slot layer, and a feed network layer, combined with a microstrip line transition, the problem of excessive area and profile of ridge waveguide antennas in high-capacity satellite communication systems was solved, achieving lightweight and efficient broadband characteristics suitable for spaceborne equipment.

CN120581872BActive Publication Date: 2026-05-29SHANGHAI JINGJI COMM TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JINGJI COMM TECH CO LTD
Filing Date
2025-06-09
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing ridge waveguide antennas have problems such as excessive area and profile height, high manufacturing difficulty, and phase inconsistency in high-capacity satellite communication systems, making it difficult to meet the low profile requirements of spaceborne equipment.

Method used

By adopting a structural design consisting of a radiating layer, a coupling slot layer, and a feed network layer, and by stacking ridge waveguides and radiating waveguides, combined with a microstrip line transition structure, a planar power divider network is constructed, achieving compactness and low loss of the ridge waveguide slot antenna array.

Benefits of technology

It achieves lightweight and compact design of ridge waveguide slot antenna arrays, reducing area and profile height while maintaining broadband characteristics and improving radiation efficiency and gain, making it suitable for space-constrained aerospace applications.

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    Figure CN120581872B_ABST
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Abstract

The application discloses a ridge waveguide slot antenna, which comprises a radiation layer, a coupling slot layer and a feed network layer; the coupling slot layer is a ridge waveguide, the radiation layer is arranged on the side with a ridge of the ridge waveguide in a laminated mode, a coupling hole array is arranged on the interface of the laminated mode, and the radiation layer is provided with a radiation slot; a PCB board is arranged in a box body of the feed network layer, a ridge waveguide-microstrip line transition structure is arranged on one side of the PCB board, one end of the transition structure is connected with the ridge of the ridge waveguide, the other end of the transition structure is connected with a microstrip line printed on the PCB board, and the microstrip line leads to a probe port on the outer wall of the box body; the ridge waveguide slot antennas are arranged in parallel with each other to form a ridge waveguide slot antenna array, the feed network layers of the ridge waveguide slot antennas in the ridge waveguide slot antenna array are located on the same side, and the feed network layers are connected with each other through the probe ports to form a sub-network. The application has a compact structure, can effectively reduce the area and profile height of the ridge waveguide slot antenna array under the premise of ensuring the performance of the ridge waveguide slot antenna.
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