Wearable RF Resonant Layers for Reflection-Suppressed Communication
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Solution Overview
Problem
Non-ideal signal reflections in wireless communication degrade communication quality and can lead to leakage of positioning information.
Innovation Solution
A wearable device comprising a flexible wearable layer with a fabric element and a first metal resonant structure, and a detachable layer with a dielectric substrate and a second metal resonant structure, designed to guide RF signals through Mie scattering towards the detachable layer, reducing reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wireless communication is used, then communication functionality is provided, but non-ideal signal reflections occur degrading communication quality
Solution Approach 1:
The patent applies resonant structures that convert harmful RF signal reflections into beneficial effects by tuning the resonant frequency to match the operating frequency, causing the reflected signals to cancel each other out through destructive interference, thereby improving communication quality and reducing radar detection
Solution Approach 2:
The patent uses composite material structures combining conductive materials (for resonant elements) with dielectric materials (for substrate and insulation), creating a layered composite configuration that optimizes both signal reflection suppression and mechanical properties for wearable applications
2Reliability
If resonant structures are added to suppress reflections, then communication quality improves, but device complexity increases
Solution Approach 1:
The patent divides the resonant structure into multiple independent resonant elements distributed across the wearable device surface, with each element being a simple geometric shape, allowing modular design and fabrication while collectively achieving broad frequency range reflection suppression
Solution Approach 2:
The patent positions resonant structures at specific locations where signal reflections are most problematic, with varying densities and configurations tailored to different regions of the wearable device, optimizing reflection suppression where needed while minimizing overall complexity
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 design significantly reduces non-ideal signal reflections, enhancing communication quality and making the device less detectable by external radar.
Implementation Method 1
The flexible wearable layer causes a Mie scattering event of the RF signal. The main transmission direction of the Mie scattering event is toward the detachable layer.
Data Source
AI summary
A wearable device includes a flexible wearable layer and a detachable layer. The flexible wearable layer includes a fabric element and a first metal resonant structure. The first metal resonant structure is integrated with the fabric element. The detachable layer is adjacent to the flexible wearable layer. The detachable layer includes a dielectric substrate and a second metal resonant structure. The dielectric substrate has a first surface and a second surface which are opposite to each other. The second metal resonant structure is distributed over the first surface and the second surface of the dielectric substrate. When the wearable device receives an RF (Radio Frequency) signal, the flexible wearable layer guides the RF signal to the detachable layer.