Flexible Wearable Substrate Flip Structure for Antenna Isolation
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Solution Overview
Problem
Wearable devices face challenges in size reduction and user comfort due to the need for strong adhesive force and attachment area to prevent device detachment from the human body, leading to discomfort and compromised wireless communication performance.
Innovation Solution
A wearable device design featuring a flexible substrate with a flip structure that positions the wireless communication unit away from the body surface, reducing radio wave scattering and absorption, and arranging components to minimize height and maximize flexibility, thereby improving attachability and communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the device unit is packaged alone to reduce overall size, then device compactness is improved, but the height in the vertical direction becomes larger
Solution Approach 1:
The patent transitions from a planar arrangement to a three-dimensional folded structure. The substrate is folded such that the wireless communication unit is positioned in a different spatial plane, away from the body surface, while maintaining a compact footprint on the body. This dimensional change allows compact packaging without increasing height.
2Reliability
If adhesive force and attachment area are increased to prevent device detachment, then device stability is improved, but user comfort deteriorates
Solution Approach 1:
The device is segmented into distinct functional units: electrode units for body contact and a wireless communication unit separated from the body surface through substrate folding. This segmentation allows the communication unit to be isolated from the skin, reducing adhesive requirements and improving comfort while maintaining device stability through the folded structure.
3Volume of moving object
If the wireless communication unit is positioned close to the body surface, then device compactness is improved, but wireless communication performance deteriorates due to radio wave scattering and absorption
Solution Approach 1:
The substrate is folded to position the wireless communication unit in a different spatial dimension, creating distance between the unit and the body surface. This spatial separation reduces radio wave scattering and absorption by the body while maintaining compact overall device dimensions through the folded configuration.
Data Source
AI summary
An embodiment is a device including a substrate, the substrate being flexible. The device further comprises an electrode configured to be in contact with a living body, a circuit connected to the electrode via an electric wiring, a wireless transceiver connected to the circuit and configured to transmit and receive signals, a power supply configured to supply electric power to the circuit and the wireless transceiver, and a battery connected to the power supply, where the electrode, the circuit, the wireless transceiver, the power supply and the battery are mounted on the substrate, and the substrate is configured to be deformed to make the wireless transceiver arranged away from the living body when attached to the living body.