Frequency selection unit, frequency selection surface and base station antenna
By using the frequency selection unit in the base station antenna, the problem of large number of surface layers, large thickness, and insufficient inclined incident performance of large angles is solved, and the effects of thickness reduction, loss reduction and performance improvement are achieved.
CN119764849AInactive Publication Date: 2025-04-04ZTE CORP
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Patent Information
- Application Number
- CN202410359046.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-04-04
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Technical Problem
The frequency selection surface layer used in existing base station antennas has a large number of layers and a large thickness, and the large angle oblique incident performance is insufficient.
Method used
A frequency selection unit is provided, including a dielectric layer, a first metal layer and a second metal layer, the first metal layer is cut off in the middle, and can realize the conversion of the pass-stop band in a smaller frequency interval, reduce losses and costs, and improve large-angle oblique incident performance.
Benefits of technology
The thickness reduction, loss and cost reduction of the frequency-selected surface is achieved, and the large angle oblique incident performance is good, which can meet the actual needs.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a frequency selection unit which comprises a dielectric layer, a first metal layer and a second metal layer, the first metal layer covers one side of the dielectric layer, the second metal layer covers the other side of the dielectric layer, the first metal layer is cut off in the middle, the projection area of the cut-off part on the second metal layer comprises a first area, and the projection area of the cut-off part on the second metal layer comprises a second area. The first region includes a metal pattern. The invention also provides a frequency selective surface and a base station antenna. According to the invention, at least the problems of many layers, large thickness and insufficient large-angle oblique incidence performance of a frequency selective surface used in a base station antenna at present can be solved.
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