Antenna Module Integrating NFC and MST via Magnetic Portions
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Solution Overview
Problem
The implementation of payment methods using smartphones at point-of-sale terminals is hindered by the lack of a suitable reading apparatus for 2D barcodes and insufficient NFC performance in many smartphones, requiring additional hardware for NFC signal reading.
Innovation Solution
An antenna module with a wiring portion on an insulating substrate and magnetic portions disposed on both surfaces, allowing for near field communications and magnetic secure transmission capabilities without the need for separate reading apparatuses, integrated into a conductive cover with a slit-shaped space to enhance magnetic field formation and communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both NFC antenna and MST antenna are mounted on one portable terminal, then payment functionality is improved, but device complexity increases
Solution Approach 1:
The patent combines both NFC antenna and MST antenna into a single integrated antenna module. The wiring portion serves dual purposes: as an NFC antenna when viewed from above and as an MST antenna when viewed from the side, eliminating the need for separate antenna components and reducing overall device complexity while maintaining both payment functionalities
Solution Approach 2:
The single wiring portion structure is designed to perform multiple functions - it operates as both an NFC antenna and an MST antenna depending on the operational mode. This multi-functional design allows the portable terminal to support both NFC and MST payment methods without requiring separate dedicated antenna structures for each function
2Volume of moving object
If antenna module size is reduced for miniaturization, then portability is improved, but magnetic field formation capability deteriorates
Solution Approach 1:
The patent utilizes three-dimensional space by positioning magnetic portions on both the front and rear surfaces of the wiring portion. This vertical stacking approach allows the magnetic field to be formed effectively within a compact footprint, achieving miniaturization while maintaining reliable magnetic field formation capability through multi-layer magnetic component arrangement
Solution Approach 2:
The magnetic portions are nested within the vertical space of the antenna module, with first and second magnetic portions positioned on opposite surfaces of the wiring portion. This nested arrangement maximizes the use of available space, allowing effective magnetic field generation without increasing the overall module dimensions
3Reliability
If magnetic portions are positioned to partially overlap or have edges in vertical correspondence, then magnetic field efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent allows flexible positioning of magnetic portions where they may partially overlap or have edges in vertical correspondence, rather than requiring perfect symmetry or alignment. This asymmetric design approach maintains magnetic field efficiency while providing tolerance for manufacturing variations, reducing the stringency of positioning precision requirements
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 seamless payment transactions using smartphones without additional hardware, improving NFC and MST performance by forming a solenoid magnetic field and optimizing antenna module design for miniaturization and thinness.
Implementation Method 1
forming a solenoid magnetic field
Implementation Method 2
magnetic secure transmission
Data Source
AI summary
An antenna module disposed inside a conductive cover and performing near field communications includes: a wiring portion having antenna wirings formed on an insulating substrate and having a first surface facing an inner surface of the conductive cover and a second surface opposing the first surface; a first magnetic portion disposed between the first surface of the wiring portion and the conductive cover; and a second magnetic portion disposed on the second surface of the wiring portion, wherein the first magnetic portion and the second magnetic portion are disposed to partially overlap each other or to have edges thereof in vertical correspondence with each other.