Surface wave suppression on antenna devices for an automotive radar antenna system

EP4441844B8Active Publication Date: 2026-07-08YINWANG INTELLIGENT TECHNOLOGIES CO LTD
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
YINWANG INTELLIGENT TECHNOLOGIES CO LTD
Filing Date
2022-03-01
Publication Date
2026-07-08

AI Technical Summary

Technical Problem

Conventional automotive radar antenna systems suffer from surface waves that distort the radiation pattern and increase coupling between antennas, especially in high-resolution systems operating above 76 GHz with complex antenna configurations.

Method used

The use of resistive sheets on the antenna aperture plane to suppress surface waves, which are printed, painted, or deposited, reducing surface wave amplitude by absorbing induced electrical current.

Benefits of technology

The solution results in a smoother radiation pattern with reduced fluctuations and decreased coupling between antennas, simplifying fabrication and enhancing overall system performance.

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