Antenna Module with Nested Solenoid and Spiral Wiring
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Solution Overview
Problem
Existing antenna modules in portable devices face challenges in maintaining effective communication performance for both NFC and MST functions without adding separate reading apparatuses to POS terminals, due to the lack of a data transmission channel between conventional POS terminals and smartphones.
Innovation Solution
An antenna module design featuring a wiring part with a solenoid structure and magnetic parts of varying permeabilities, where the second magnetic part is surface-bonded to the first magnetic part, and interlayer connection conductors connect patterns on substrates, allowing for efficient communication through a spiral-shaped second antenna wiring and solenoid-structured first antenna wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both NFC antenna and MST antenna are mounted in a single portable terminal, then short-range communication 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 NFC antenna wiring and MST antenna wiring are disposed on the same insulating substrate, sharing common structural elements including the substrate, magnetic parts, and encapsulation resin, thereby achieving dual functionality while reducing overall device complexity compared to separate antenna modules.
Solution Approach 2:
The antenna module is designed as a multi-functional component that simultaneously performs both NFC (Near Field Communication) and MST (Magnetic Secure Transmission) functions. The shared structural elements and common magnetic parts enable both communication technologies to operate within a single integrated module, making the antenna system universal for multiple short-range communication purposes.
2Volume of moving object
If antenna module size is reduced to fit portable devices, then device integration is improved, but communication performance deteriorates
Solution Approach 1:
The MST antenna wiring is disposed in the internal region of the NFC antenna wiring, creating a nested configuration where the smaller MST antenna structure is contained within the larger NFC antenna structure. This nesting arrangement allows both antennas to coexist in a compact space while maintaining their respective communication performances.
Solution Approach 2:
Different regions of the insulating substrate are utilized for different antenna types, with the NFC antenna occupying the outer region and the MST antenna occupying the internal region. The magnetic parts are strategically positioned to provide localized magnetic field enhancement where needed, ensuring optimal performance for each communication type within the constrained module size.
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 enhances communication efficiency by maintaining performance for both NFC and MST functions, reducing manufacturing costs, and allowing easy integration into various electronic device sizes while maintaining high recognition rates for short-range communications.
Implementation Method 1
a first antenna wiring disposed in an internal region of the second antenna wiring, and disposed in a solenoid structure
Implementation Method 2
a second antenna wiring disposed in a spiral shape on an insulating substrate
Implementation Method 3
a first magnetic part disposed in the center of the solenoid structure and including a portion exposed externally from the wiring part, and a second magnetic part coupled to the first magnetic part
Data Source
AI summary
An antenna module includes a wiring part including a second antenna wiring disposed to have a spiral shape on an insulating substrate and a first antenna wiring disposed in an internal region of the second antenna wiring and disposed in a solenoid structure; a first magnetic part disposed to be inserted into the center of the solenoid structure and having at least a portion exposed externally from the wiring part; and a second magnetic part coupled to the first magnetic part.