Radar Radome Tapered Cover for Reflection Suppression
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Solution Overview
Problem
Radar devices are prone to erroneous detection and reduced sensitivity due to reflected waves from radomes with parallel surfaces to the antenna, which can interfere with the radio wave transmission.
Innovation Solution
A radio wave transmissive cover with a reflection suppression section featuring a plurality of tapered portions having a hollow tapered shape that opens toward the transmitting and receiving unit, effectively suppressing the reflection of radio waves back toward the unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radome with parallel surfaces is used, then the radio wave transmission is maintained, but reflected waves are generated causing erroneous detection and reduced sensitivity
Solution Approach 1:
The radome surface is segmented into multiple inclined facets instead of a single parallel surface. Each facet is oriented at a specific angle to redirect reflected radio waves away from the antenna, eliminating the harmful reflection effect while maintaining overall radio wave transmission functionality.
Solution Approach 2:
The radome transitions from a symmetric parallel-surface structure to an asymmetric inclined-surface structure. The inclined surfaces are positioned at specific asymmetric angles relative to the antenna, creating directional reflection patterns that steer reflected waves away from the antenna while preserving forward transmission.
2Measurement precision
If the radome surface is modified to suppress reflection, then sensitivity is improved, but the structure becomes more complex
Solution Approach 1:
The radome employs inclined surfaces that create curved reflection paths for radio waves. The geometric arrangement of inclined facets forms a curved overall profile that naturally guides reflected waves away from the antenna, achieving reflection suppression through geometric curvature rather than complex material or mechanical structures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The configuration reduces erroneous detection and improves sensitivity by minimizing the reflection of radio waves, maintaining effective transmission and reducing sensitivity issues.
Implementation Method 1
a reflection suppression section configured to suppress reflection of the radio wave toward the transmitting and receiving unit. The reflection suppression section has a configuration in which a plurality of tapered portions are arranged, and each of the plurality of tapered portions has a hollow tapered shape that opens toward the transmitting and receiving unit
Data Source
AI summary
A radio wave transmissive cover is to be provided on a front side of a transmitting and receiving unit in a radio wave radar device and is configured to transmit a radio wave emitted from the transmitting and receiving unit. The radio wave transmissive cover includes a reflection suppression section configured to suppress reflection of the radio wave toward the transmitting and receiving unit. The reflection suppression section has a configuration in which a plurality of tapered portions are arranged, and each of the plurality of tapered portions has a hollow tapered shape that opens toward the transmitting and receiving unit.