Multi-Pattern Coil Layout for Offset NFC Coverage Extension
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for extending Near-Field Communication (NFC) coverage area are inefficient, as described in International Publication WO 2013/073314, and fail to effectively enhance communication coverage when a smartphone is placed offset on a terminal holder.
Innovation Solution
A coil component comprising a first coil pattern, a second coil pattern connected to the first, and a magnetic member covering both in the axial direction, with the first and second coil patterns arranged side by side in a direction perpendicular to the axial direction, and the first coil pattern having protrusions that extend from the magnetic member to enhance magnetic flux in the desired direction, thereby extending the communication coverage area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a sub-coil antenna is connected to the main coil antenna, then the communication coverage area can be extended, but the extension is not efficient
Solution Approach 1:
The coil antenna is divided into multiple independent coil patterns (first coil pattern, second coil pattern, third coil pattern) arranged in different directions. Each coil pattern contributes to extending the communication coverage area in its respective direction, achieving efficient omnidirectional coverage extension without requiring a single large complex antenna structure
Solution Approach 2:
The invention transitions from a single-plane or single-direction coil arrangement to a three-dimensional spatial arrangement with coil patterns extending in multiple directions (first direction, second direction, third direction). This dimensional expansion enables the communication coverage area to be extended efficiently in all directions simultaneously
2Area of stationary object
If multiple coil patterns are arranged in different directions, then the communication coverage area is extended efficiently, but the device structure becomes more complex
Solution Approach 1:
Multiple coil patterns extending in different directions are merged into a single integrated coil component. The first, second, and third coil patterns are all connected to the same two terminals, combining multiple directional antenna functions into one unified structure, thereby achieving efficient coverage extension without proportionally increasing device complexity
Solution Approach 2:
The coil component achieves multi-functionality by incorporating coil patterns that extend in multiple directions (first, second, and third directions). This single component performs the function of multiple directional antennas simultaneously, enabling omnidirectional communication coverage while maintaining a compact and unified structure
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 described coil component efficiently extends the communication coverage area in the desired direction, ensuring proper NFC communication and wireless power transmission regardless of the smartphone's position on the terminal holder.
Implementation Method 1
a magnetic member covering the first and second coil patterns in the axial direction thereof
Implementation Method 2
first coil pattern, a second coil pattern connected to the first coil pattern
Data Source
AI summary
Disclosed herein is a coil component that includes a first coil pattern, a second coil pattern connected to the first coil pattern, and a magnetic member covering the first and second coil patterns in an axial direction of the first and second coil patterns. The first and second coil patterns are arranged side by side in a first direction perpendicular to the axial direction. The first coil pattern has a first protrusion protruding in a second direction perpendicular to the axial direction and the first direction from a first outer peripheral end of the magnetic member in the second direction.