OAM Medical Imaging Radar for Diffraction-Limit Resolution
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Solution Overview
Problem
Existing RADAR technologies are limited by the diffraction limit, necessitating the use of more expensive LiDAR for high-resolution imaging, and there is a need to leverage the physics of Orbital Angular Momentum (OAM) for super-resolution imaging.
Innovation Solution
A super resolution radar system that transmits both OAM and non-OAM electromagnetic waves, processes their return signals, and computes target information by subtracting these signals to achieve enhanced resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional RADAR technology is used, then the system is cost-effective, but the imaging resolution is limited by the diffraction limit
Solution Approach 1:
The patent changes the fundamental parameter of electromagnetic wave propagation by utilizing Orbital Angular Momentum (OAM) modes instead of conventional plane waves. This parameter change enables the system to achieve super-resolution imaging beyond the diffraction limit while maintaining radar system architecture, thus improving measurement precision without proportionally increasing device complexity
Solution Approach 2:
The patent substitutes the need for mechanical LiDAR systems with an electromagnetic wave-based radar system using OAM technology. This replacement achieves comparable or superior resolution through electromagnetic field manipulation rather than mechanical scanning, reducing device complexity while maintaining or improving imaging resolution
2Measurement precision
If LiDAR technology is used to achieve high resolution, then imaging resolution is improved, but the system cost increases significantly
Solution Approach 1:
The patent creates a functional copy of LiDAR's high-resolution capability using radar technology with OAM waves. By replicating the resolution-performance through electromagnetic field manipulation rather than optical mechanisms, the system achieves similar imaging quality at lower cost, making high-resolution imaging more accessible
Solution Approach 2:
The patent changes the operating parameters of the imaging system by using OAM-carrying electromagnetic waves with specific phase distributions. This parameter change enables the radar system to achieve resolution levels previously only attainable with expensive LiDAR, thereby improving ease of manufacture while maintaining measurement precision
3Measurement precision
If OAM waves are used for imaging, then super-resolution is achieved, but the system complexity increases
Solution Approach 1:
The patent segments the imaging process into distinct OAM mode components, allowing independent processing and reconstruction of different spatial frequency information. This segmentation simplifies the overall signal processing complexity by breaking down the complex OAM wave analysis into manageable modular steps, thus achieving super-resolution without overwhelming system complexity
Solution Approach 2:
The patent implements feedback mechanisms in the signal processing chain to iteratively refine the image reconstruction from OAM wave measurements. This feedback approach systematically reduces processing complexity by using measured data to guide and adjust subsequent processing steps, achieving accurate super-resolution imaging through controlled iterative refinement rather than complex one-step processing
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
Enables super-resolution imaging by effectively utilizing OAM waves to overcome the diffraction limit, providing improved imaging capabilities without the need for costly LiDAR.
Implementation Method 1
transmit a first electromagnetic wave having an Orbital Angular Momentum wave-front thru the antenna towards a target
Implementation Method 2
transmission electronics structured to transmit electromagnetic waves
Implementation Method 3
receiving electronics structured to form signals from return waves
Data Source
AI summary
An electromagnetic wave medical imaging system, the system including: at least one antenna; transmission electronics; receiving electronics; receiving computing electronics, where the transmission electronics are structured to transmit a first electromagnetic wave having an Orbital Angular Momentum wave-front thru the antenna towards a target, where the Orbital Angular Momentum wave-front includes a vortex region, where the receiving computing electronics are structured to form a first signal from a first return wave of the first electromagnetic wave; and an image sensor integrated with the antenna, where the system is designed to operate at a near field electromagnetic wave.