Ultra-Wide-Angle Radar Antenna Modules for Blind-Spot Coverage
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Solution Overview
Problem
Conventional radar systems have limited viewable angles, typically around 120 degrees, leading to blind spots and reduced detection accuracy, especially in vehicles and other applications, due to environmental factors and complex design adjustments required for multiple transceivers.
Innovation Solution
An ultra-wide angle radar system comprising a first antenna module with a flexible board antenna and two additional modules with integrated circuit boards and rigid board antennas, connected through coupling radiation or metallic connections, achieving a viewable angle greater than 180 degrees, adaptable for long-range, medium-range, and short-range detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the radar uses a conventional single transceiver design with limited viewable angle, then the device complexity is reduced, but the detection accuracy and coverage area deteriorate due to blind spots
Solution Approach 1:
The radar system is divided into multiple antenna modules (first, second, and third antenna modules) with different viewable angles. Each module covers a specific angular range, and their combined coverage eliminates blind spots while maintaining manageable individual module complexity
Solution Approach 2:
The patent extends the detection coverage from a single angular dimension to multiple dimensions by incorporating antenna modules with different orientation angles (e.g., 60 degrees, 120 degrees, 180 degrees), creating comprehensive three-dimensional coverage around the device
2Measurement precision
If the radar viewable angle is increased to cover blind spots, then the detection accuracy improves, but the device complexity increases due to multiple transceivers requiring endless adjustment
Solution Approach 1:
Instead of using multiple adjustable transceivers, the system segments the detection task into fixed antenna modules, each with predetermined viewable angles. This eliminates the need for endless adjustment while achieving comprehensive coverage
Solution Approach 2:
Each antenna module is designed with multi-functionality to handle different detection ranges (long-range, medium-range, short-range) within its angular sector, reducing the need for multiple specialized transceivers and their associated adjustments
3Length of stationary object
If the radar is designed for long-range detection with narrow field of view, then the detection distance is improved, but the coverage area deteriorates leaving blind spots on both sides
Solution Approach 1:
The detection task is segmented into different radial zones (long-range, medium-range, short-range) covered by different antenna modules. Each module maintains optimized performance for its designated range while contributing to overall angular coverage
Solution Approach 2:
The system adds angular dimension to the detection capability by deploying antenna modules at different orientations (60°, 120°, 180° viewable angles), transforming a single narrow-beam detector into a multi-directional detection network that covers both distance and angle
4Area of stationary object
If multiple radars are installed to overcome blind spots, then the coverage area improves, but the device complexity and cost increase
Solution Approach 1:
Multiple antenna modules are merged into a single integrated radar system with shared signal processing and control units. This achieves the coverage of multiple radars while reducing overall system complexity through consolidation of common functions
Solution Approach 2:
Each antenna module within the system is designed with universal capabilities to perform long-range, medium-range, and short-range detection, allowing a single multi-functional system to replace what would otherwise require multiple specialized radar units
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 system provides improved detection accuracy and eliminates blind spots with a viewable angle exceeding 180 degrees, reducing the need for multiple radars and simplifying design adjustments, enhancing safety and efficiency in various applications.
Implementation Method 1
The rigid board antenna and the flexible board antenna transmit signals between each other by coupling radiation or metallic connections
Data Source
AI summary
An ultra-wide angle radar system includes a first antenna module, a second antenna module, and a third antenna module. The first antenna module has a flexible board antenna or an integrated circuit board. One side of the second antenna module is adjacent to one side of the first antenna module and one side of the third antenna module is adjacent to another side of the first antenna module. The first, second, and third antenna modules have distinct radiating directions. One or both of the second antenna module and the third antenna module, connected to the first antenna module, transmit signals by coupling radiation or metallic connections. Therefore, the viewable angle during detection is greater than 180 degrees. The design can be adjusted according to requirements for different detection ranges in different applications such as long-range, medium-range, and short-range detection.