Multi-layer Multi-steering Antenna Array for Millimeter Wave Radar
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Solution Overview
Problem
Current autonomous driving systems face challenges in detecting and classifying targets in dynamic environments with the same level of accuracy as humans, particularly in real-time, due to limitations in sensor fusion and target identification in various weather and congestion conditions.
Innovation Solution
A Multi-Layer, Multi-Steering (MLMS) antenna array for millimeter-wave applications is integrated into radar systems, utilizing meta-structures and metamaterials to generate dynamically controllable RF beams, combined with AI and machine learning for enhanced target detection and classification, enabling true 3D vision and human-like interpretation of the environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional sensor fusion systems are used for target detection, then the system structure is relatively simple, but the target detection accuracy and classification reliability are insufficient in dynamic environments
Solution Approach 1:
The antenna array is divided into multiple independent layers (first antenna array layer, second antenna array layer, third antenna array layer) with different orientations. Each layer detects targets in specific spatial dimensions, and the results are fused to achieve comprehensive 3D target detection and classification with high accuracy while maintaining manageable system complexity through modular design
Solution Approach 2:
The system combines multiple types of antenna elements (dipole antennas, patch antennas, slot antennas) with different radiation characteristics in a composite array structure. This allows the system to leverage the advantages of each antenna type for different detection scenarios, improving overall target detection accuracy and environmental adaptability
2Reliability
If multi-layer antenna arrays are deployed to improve target detection accuracy, then the detection reliability improves, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The multi-layer antenna array is designed as separate modular layers that can be manufactured independently and then assembled together. Each layer contains identical or similar antenna elements that can be produced using standardized manufacturing processes, reducing overall manufacturing difficulty while maintaining high detection reliability
Solution Approach 2:
The same types of antenna elements (dipole, patch, slot antennas) are used across multiple layers with consistent design parameters. This universality allows for standardized manufacturing processes and simplifies production, while the multi-layer configuration still achieves high detection reliability through spatial diversity
3Adaptability or versatility
If multiple antenna arrays with different orientations are used to achieve 3D vision, then the spatial detection capability improves, but the system complexity and control difficulty increase
Solution Approach 1:
Each antenna layer is oriented in a specific direction (first layer: horizontal x-axis, second layer: vertical y-axis, third layer: diagonal direction) to detect targets in different spatial planes. This localized orientation strategy enables the system to achieve comprehensive 3D spatial detection capability while keeping each individual layer's design and control relatively simple
Solution Approach 2:
The system transitions from 2D planar antenna arrays to 3D multi-layer spatial configuration by adding antenna layers at different heights and orientations. This dimensional expansion enables true 3D target detection and classification capabilities, allowing the system to perceive spatial relationships and target positions in three-dimensional space
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 MLMS antenna array provides reliable target detection and classification with over 90% accuracy, even in difficult weather conditions and congested areas, allowing autonomous vehicles to maintain safe speed and navigate obstacles effectively.
Implementation Method 1
A Multi-Layer, Multi-Steering (MLMS) antenna array for millimeter-wave applications is integrated into radar systems, utilizing meta-structures and metamaterials to generate dynamically controllable RF beams
Data Source
AI summary
Examples disclosed herein relate to a multi-layer, multi-steering (“MLMS”) antenna array for millimeter wavelength applications. The MLMS antenna array includes a superelement antenna array layer comprising a plurality of superelement subarrays, in which each superelement subarray of the plurality of superelement subarrays includes a plurality of radiating slots for radiating a transmission signal. The MLMS antenna array also includes a power division layer configured to serve as a feed to the superelement antenna array layer, in which the power division layer includes a dielectric layer interposed between a plurality of conductive layers. The MLMS antenna array also includes a top layer disposed on the superelement antenna array layer. The top layer may include a superstrate or a metamaterial antenna array. Other examples disclosed herein include a radar system for use in an autonomous driving vehicle.