Angular NFC Antenna Structure for Ergonomic Wearable Payments
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Solution Overview
Problem
Conventional wearable devices with planar NFC antennas require users to adopt uncomfortable and unnatural postures due to limited magnetic field induction range and specific reading angles, making mobile payments inconvenient.
Innovation Solution
The design incorporates angular antenna modules with magnetic cores and spirally wound antenna wire coils on substrates, allowing for adjustable angles and wider magnetic field induction, enabling more flexible and ergonomic data exchange without large rotational movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a planar antenna is used for NFC communication, then the device structure is simple and easy to manufacture, but the magnetic field induction range is limited and requires large wrist rotation for successful communication
Solution Approach 1:
The patent transitions from a planar (2D) antenna to a three-dimensional angular antenna structure. The angular antenna extends vertically from the substrate, creating a 3D magnetic field distribution that covers multiple angles and directions, thereby expanding the magnetic field induction range beyond the limited planar surface.
Solution Approach 2:
The angular antenna design provides dynamic adaptability to different reading angles. By forming an angle between the antenna wire and the substrate, the magnetic field can be effectively induced at multiple orientations, allowing the device to communicate successfully with readers at various angles without requiring large wrist rotations.
2Volume of moving object
If the NFC antenna is disposed under the screen or on the circuit board, then the device structure is compact, but the magnetic field induction range is limited to the screen surface or back
Solution Approach 1:
The patent introduces a vertical dimension to the antenna structure by forming an angle between the antenna wire and the substrate. This angular configuration allows the magnetic field to extend in three-dimensional space rather than being confined to the planar screen surface or back, thereby expanding the induction range while maintaining device compactness.
3Ease of manufacture
If a planar antenna is used, then the manufacturing process is simple, but the reading angle is specific and requires precise alignment with the reader
Solution Approach 1:
The angular antenna design provides dynamic adaptability to different reading angles. By forming an angle between the antenna wire and the substrate, the magnetic field can be effectively induced at multiple orientations, allowing the device to communicate successfully with readers at various angles without requiring large wrist rotations.
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
This solution enhances user experience by allowing convenient and intuitive mobile payments with wider magnetic field coverage, reducing the need for awkward wrist rotations and improving the speed and usability of NFC transactions.
Implementation Method 1
a first current flows through the first antenna wire coil and a magnetic field is produced accordingly
Implementation Method 2
a first magnetic core, disposed on the substrate, wherein a first angle is formed between the first magnetic core and the substrate
Implementation Method 3
the magnetic field passes through the second antenna wire coil
Data Source
AI summary
A wearable device is provided. The wearable device includes a substrate and a first antenna module. The first antenna module includes a first magnetic core and a first antenna wire coil. The first magnetic core is disposed on the substrate. A first angle is formed between the first magnetic core and the substrate. The first antenna wire coil is wound disposed on the first magnetic core.