A low-area power-efficient CMOS active rectifier for wirelessly powered medical devices
Bibliographic record
Abstract
We present in this paper a new full-wave active rectifier topology. It uses a single bootstrapped capacitor to reduce the effective threshold voltage of selected MOS switches in both positive and negative input source cycles. It achieves a significant saving in silicon area while having a remarkably high power efficiency and low voltage drop. The structure does not require complex circuit design. A simple direct control scheme is used to connect the bootstrapped reservoir to the main pass switches at proper time. The highest voltages available in the circuit are used to drive the gates of selected transistors in order to reduce the leakages and to lower their channel on-resistance, while having high transconductance. The new design benefits from low-threshold MOS available in advanced CMOS technologies. The proposed rectifier was implemented using the standard TSMC 0.18 ¿m CMOS process and then characterized with the SpectreS simulator. The circuit was laid out and reported post-layout simulation results were found in good agreement with schematics-based simulations. The design saves almost 70% area compared to a previously reported double capacitor structure.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".