Asymmetric Coil Conductor Geometry for Lower Stray Capacitance
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Solution Overview
Problem
Existing electronic components struggle to achieve a high Q factor and increased self-resonant frequency due to limitations in conductor design, particularly in reducing stray capacitance between conductors and other components.
Innovation Solution
The electronic component features a conductor with different angles and taper rates at its end portions, where one angle and taper rate are larger than the other, optimizing current distribution and reducing stray capacitance by curving surfaces and varying the taper rates, thereby enhancing the Q factor and self-resonant frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conductor has a symmetric cross-section (e.g., triangular or trapezoidal shape with equal angles), then the manufacturing process is simple and uniform, but the Q factor cannot be maximized and stray capacitance cannot be reduced effectively
Solution Approach 1:
The conductor cross-section is designed with asymmetric angles where the first angle at one end portion differs from the second angle at the other end portion. This asymmetry enables optimization of current distribution and reduction of stray capacitance, thereby achieving high Q factor and increased self-resonant frequency while maintaining manufacturing feasibility through controlled deposition processes
2Reliability
If the conductor end portions have uniform angles and taper rates, then the manufacturing process is straightforward, but stray capacitance between the conductor and other components cannot be reduced
Solution Approach 1:
Different end portions of the conductor are assigned different geometric properties: the first end portion has a first angle and first taper rate, while the second end portion has a second angle and second taper rate. This local differentiation allows each end to be optimized for its specific function - one end for current distribution and the other for minimizing stray capacitance - thereby achieving high self-resonant frequency
3Reliability
If the conductor has a simple geometric shape, then the manufacturing process is easy and cost-effective, but current distribution cannot be optimized for high Q factor
Solution Approach 1:
The conductor geometry is defined by specific parameters including the first angle, second angle, first taper rate, and second taper rate. By controlling these parameters during the conductor formation process, the patent achieves optimized current distribution and high Q factor. The asymmetric angular parameters create favorable current distribution patterns that enhance performance while remaining compatible with standard manufacturing techniques
Data Source
AI summary
A coil component includes an element body, and a first coil conductor and a second coil conductor disposed in the element body, in which the conductor has, in a cross section orthogonal to an extending direction of the first coil conductor and the second coil conductor, a first end portion and a second end portion in a width direction viewed from the extending direction, the first end portion forms a first angle, the second end portion forms a second angle, and the first angle and the second angle are different.