Resonant Coil Layout With Integrated Capacitance for More Sections
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Solution Overview
Problem
Conventional resonant coils with integrated capacitance face limitations in increasing the number of sections while maintaining constant capacitance and voltage rating, due to constraints on total thickness, which restricts their performance in applications requiring multiple sections.
Innovation Solution
The design incorporates multiple discontinuities in each conductor layer, allowing for thinner dielectric layers and a higher number of sections within a constrained thickness, achieved by alternating orientations and alignments of conductor sublayers, which reduces capacitance and voltage stress, enabling more efficient use of materials and manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of sections in resonant coils is increased, then performance in applications requiring multiple sections is improved, but total thickness increases which violates constraints
Solution Approach 1:
The patent divides each conductor layer into multiple discontinuous segments or sections along the length of the resonant coil. Each segment is separated by dielectric material, creating multiple capacitive sections within a single conductor layer. This segmentation allows the coil to achieve multiple resonant frequencies and sections without proportionally increasing the overall thickness, as the segments are arranged in parallel within the same layer rather than stacking layers sequentially.
Solution Approach 2:
The patent transitions from a traditional single-layer or stacked-layer configuration to a multi-dimensional arrangement where multiple conductor segments are distributed along the length (z-dimension) of the coil while maintaining the same thickness profile. By utilizing the longitudinal dimension for segment placement rather than stacking in the thickness direction, the design achieves multiple sections without violating thickness constraints.
2Reliability
If the number of conductor layers is increased, then capacitance and inductance are improved, but voltage stress and dielectric loss increase
Solution Approach 1:
The patent applies different properties to different parts of the conductor layers by creating discontinuous segments with varying geometries, positions, and orientations. Each segment can be locally optimized for specific electrical characteristics, and the non-uniform distribution of segments along the coil length creates position-dependent electrical properties that reduce overall voltage stress while maintaining required capacitance and inductance values.
Solution Approach 2:
The patent introduces dielectric material as an intermediary between conductor segments and layers, strategically placed to manage electric field distribution. The dielectric serves as a mediator that reduces voltage stress concentrations at discontinuities and interfaces, while also providing electrical isolation that prevents excessive dielectric loss. This intermediary approach allows higher capacitance and inductance values without proportionally increasing harmful voltage stress and dielectric heating.
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
This approach allows for a significant increase in the number of conductor layers within a given thickness, enhancing performance by maintaining constant capacitance and voltage rating, as demonstrated by a measured quality factor of 900 in a prototype, while minimizing dielectric loss and promoting low-cost, high-performance manufacturing.
Implementation Method 1
Resonant coils with integrated capacitance are electrical conductors which exhibit capacitance and inductance. Consequently, these resonant coils can achieve resonance without external reactive components
Implementation Method 2
generate a magnetic field for uses such as induction heating, magnetic hyperthermia and wireless power transfer
Implementation Method 3
Each second discontinuity is displaced from each first discontinuity, and a sublayer dielectric layer separates the first and second conductor sublayers
Data Source
AI summary
A resonant coil with integrated capacitance includes at least one separation dielectric layer and a plurality of conductor layers stacked in an alternating manner. Each of the plurality of conductor layers includes a first conductor sublayer and second conductor sublayer having common orientation and a sublayer dielectric layer separating the first and second conductor sublayers, each conductor layer having multiple discontinuities.