A Multilayer PCB Coil for Self-Resonant Wireless Power Transfer Systems
Bibliographic record
Abstract
This article presents an innovative printed circuit board (PCB) coil for self-resonant wireless power transfer (SRWPT) systems. Parasitic capacitance between adjacent coil layers is used for compensation, allowing the elimination of physical capacitors normally used in the traditional RWPT systems. Multilayer design that connects multiple PCB coils in parallel is implemented to reduce the resonant frequency. Through applying track-width-ratio and track-gap-ratio, the ac resistance of the proposed PCB coil is significantly reduced, and the proposed SRWPT system achieves a high-efficiency accordingly. The equivalent circuit and theoretical models of inductance and capacitance of the proposed PCB coil have been established. Finite element method is employed to optimize the coil and simulate its performance. A SRWPT system based on the proposed coil is established, and experimental tests have been conducted to study its performance. The results show that the proposed system achieves a resonant frequency below 150 kHz, a coil-to-coil efficiency of 94.7%, and a high-quality factor of 123.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".