Phase Compensated Multi-Layer Antenna Array for Millimeter Wave Radar
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Solution Overview
Problem
Current autonomous driving technologies 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 systems and processing capabilities.
Innovation Solution
A phase compensated 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 for 3D vision and human-like interpretation, combining with AI and machine learning for target detection and classification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional antenna systems are used for target detection, then device complexity is reduced, but measurement precision and reliability of target detection deteriorate
Solution Approach 1:
The antenna system is divided into multiple layers (first layer with first antenna array, second layer with second antenna array) where each layer independently performs beamforming and target detection in different spatial dimensions. This segmentation enables 3D target detection with improved precision while managing complexity through modular architecture
Solution Approach 2:
The patent transitions from traditional 2D antenna arrays to a 3D multi-layer configuration, adding the vertical dimension (elevation angle detection) to the conventional horizontal plane. This dimensional expansion enables simultaneous azimuth and elevation beam steering, significantly improving target detection accuracy and spatial resolution
2Reliability
If multi-layer multi-steering antenna array is implemented, then target detection accuracy improves, but device complexity increases
Solution Approach 1:
The patent implements dynamic beam steering capability where each antenna array can independently control beam direction and focus in real-time. The beamforming weights are dynamically adjusted based on target position, enabling adaptive tracking and detection that improves reliability in dynamic environments
Solution Approach 2:
The system combines multiple antenna arrays with different configurations (first array in first layer, second array in second layer) to create a composite antenna system that leverages the strengths of each sub-array, achieving enhanced detection reliability through diversified spatial sampling
3Measurement precision
If phase compensation is applied across antenna elements, then beamforming precision improves, but processing time increases
Solution Approach 1:
The patent pre-calculates and stores phase compensation values and beamforming weights for different target positions and scenarios. When a target is detected, the system quickly retrieves and applies the pre-computed parameters, significantly reducing real-time processing time while maintaining high beamforming precision
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 enables reliable target detection and classification with over 90% accuracy, even in difficult weather conditions and congested areas, enhancing the capabilities of autonomous vehicles to navigate safely and efficiently.
Implementation Method 1
A phase compensated Multi-Layer,Multi-Steering(MLMS) antenna array for millimeter wavelength(mm-wave) applications is disclosed
Implementation Method 2
The MLMS antenna array enables reliable target detection and classification with over 90% accuracy... generating 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 some aspects, each superelement subarray of the plurality of superelement subarrays includes a plurality of phase compensated 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. 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.