Multilayer Coil Element Layout for High-Frequency Antenna Coupling
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Solution Overview
Problem
Existing antenna devices face challenges in maintaining high coupling coefficients while reducing inductance and capacitance components, especially when operating in high frequency bands.
Innovation Solution
A coil element configuration with parallel and series connections of conductor patterns in multiple layers, positioned such that specific conductor patterns face each other, reducing inductance and capacitance while maintaining high coupling coefficients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the inductance and capacitance components are reduced for high frequency band operation, then the frequency band usability is improved, but the coupling coefficient between antennas deteriorates
Solution Approach 1:
The coil element is divided into multiple layers with separate conductor patterns (first, second, third, and fourth conductor patterns) that can be independently configured. This segmentation allows optimization of each layer's contribution to inductance, capacitance, and coupling, enabling reduced overall inductance and capacitance while maintaining coupling coefficient through strategic arrangement of segmented conductor patterns across layers
Solution Approach 2:
The invention transitions from planar coil configurations to three-dimensional multi-layer structures. By stacking conductor patterns in multiple layers with specific spatial relationships (first and second conductor patterns in one layer, third and fourth conductor patterns in another layer), the patent achieves reduced inductance and capacitance components while maintaining strong magnetic coupling through the third dimension, enabling high frequency band operation without sacrificing coupling coefficient
2Reliability
If a conventional coil structure is used to maintain high coupling coefficient, then the coupling between antennas is improved, but the inductance and capacitance components increase reducing high frequency performance
Solution Approach 1:
The invention changes key geometric parameters of the coil structure including conductor pattern shapes, inter-layer spacing, and conductor thickness ratios. By optimizing these parameters, the patent reduces inductance and capacitance components to enable high frequency operation while maintaining coupling coefficient. Specifically, the conductor patterns are designed with controlled dimensions and spacing to achieve the desired electrical characteristics for high frequency bands
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 configuration allows for efficient operation in high frequency bands by minimizing inductance and capacitance components while preserving strong coupling, enhancing the Q value and frequency band usability.
Implementation Method 1
a first coil and a second coil each including a plurality of conductor patterns in the insulator. The first coil includes at least two layers of first conductor patterns electrically connected to the first outer electrode, and a second conductor pattern on the first conductor patterns and electrically connected to the second outer electrode
Data Source
AI summary
A coil element includes a first coil and a second coil in an insulator. In the first coil, first conductor patterns are connected in parallel to each other, and a second conductor pattern is connected in series to the first conductor patterns. In the second coil, third conductor patterns are connected in parallel to each other, and a fourth conductor pattern is connected in series to the third conductor patterns. The second conductor pattern and the fourth conductor pattern face each other.