Radio Wave Focusing Depth Control for Implant Power Transfer
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Solution Overview
Problem
Current radio wave focusing technologies face challenges in adjusting focusing depth according to various application areas and depths within the human body, particularly for implantable medical devices, leading to inefficiencies in power supply and potential safety issues due to non-specific electromagnetic wave distribution.
Innovation Solution
An apparatus and method that generate an anatomic numerical model for electromagnetic analysis, calculate current distribution, and extract a pattern combination of antenna modules to control radio wave focusing depth, using switches to adjust antenna elements and combine channel weights for precise focusing at different depths within the body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed focusing depth is used in radio wave focusing, then the device structure is simple, but it cannot adapt to various application areas and depths within the human body
Solution Approach 1:
The antenna array is divided into multiple independently controllable antenna elements, each capable of being individually activated or deactivated. This segmentation allows the system to adjust the effective aperture and focal depth by selectively engaging different subsets of elements, providing adaptability across various application scenarios without requiring a completely different device structure for each depth.
Solution Approach 2:
The focusing depth is made dynamically adjustable through real-time control of antenna element activation states. By dynamically reconfiguring which antenna elements are active and their respective weighting coefficients, the system can adapt its focal depth to match different implantation depths and application requirements, transforming a static structure into a dynamically adaptable system.
2Productivity
If radio wave energy is radiated without precise focusing, then the equipment and operation are simple, but power cannot be supplied limitedly only to a target area
Solution Approach 1:
The system applies different amplitude and phase weights to individual antenna elements based on their spatial position and the desired focal point. This creates a non-uniform radiation pattern that concentrates energy precisely at the target location while minimizing exposure to surrounding areas. The local quality of each antenna element's contribution is optimized to achieve superior power supply efficiency to the specific target area.
Solution Approach 2:
Instead of mechanically moving the antenna or the target to achieve focusing, the patent uses electronic phase and amplitude modulation of the radio wave signals fed to each antenna element. This electronic substitution of mechanical adjustment enables precise focusing control through software-based weight optimization, simplifying operation while maintaining high power supply efficiency to the target area.
3Measurement precision
If non-invasive energy treatment is applied without precise focusing, then the application is simple, but radio waves cannot be precisely focused at various target depths
Solution Approach 1:
The system incorporates a feedback mechanism where the measured radio wave characteristics (permittivity, conductivity, impedance) of the living body are used to update the anatomic numerical model. This updated model then guides the optimization of antenna element weights to achieve precise focusing at the intended target depth. The iterative feedback loop between measurement, model updating, and weight optimization enables high focusing precision while managing system complexity through adaptive control.
Solution Approach 2:
The patent changes the electrical parameters (amplitude and phase) of the radio wave signals fed to each antenna element based on the calculated optimal weights. By adjusting these parameters according to the anatomic numerical model and desired focal depth, the system achieves precise focusing without requiring complex mechanical or structural modifications. The parameter changes in the feed signals enable adaptable focusing precision across different target depths.
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 precise and efficient focusing of radio waves at various target depths, ensuring safe and effective power supply to implantable devices while minimizing unnecessary electromagnetic exposure.
Implementation Method 1
one or more antenna elements configured to radiate radio waves
Implementation Method 2
measuring radio wave characteristic information including permittivity, conductivity, and/or impedance
Data Source
AI summary
A method of focusing radio waves, which is performed by a processor, may comprise: generating an anatomic numerical model for electromagnetic analysis inside a living body including a focusing target; calculating a current distribution, in which radio waves are focusable at a target depth inside the living body, based on the anatomic numerical model; and extracting a pattern combination of antenna modules in which the calculated current distribution is implementable, wherein the pattern combination is formed by controlling one or more antenna elements configured to radiate radio waves through switches individually coupled to two or more antenna elements.