Backscattering technique for real‐time monitoring of the received power in wireless power transmission systems
Bibliographic record
Abstract
ABSTRACT A wireless power transmission system with a dynamic, real‐time feedback for impedance matching is presented. The AC signal at the receiver node is rectified, the resulting DC signal is passed to a voltage controlled oscillator which drives a high‐frequency analog switch. When in the ON state, the switch shorts the terminals of the receiver coil, dramatically changing the impedance seen by the transmitter coil. This change is detected on the transmitter side as the backscattered signal. Variation on the frequency of the backscattered signal can then be used to affect changes in the power source amplitude or the transmission side matching network to optimize the transmission power efficiency. The proposed feedback system is implemented with planar spiral coils on PCBs, and the effect of distance variation between the coils and as a consequence, DC voltage variation on the rectifier output is measured using voltage signal spectrum in the transmitter node at 1 MHz. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2980–2983, 2016
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".