Ultra-Compact Tunable IR-UWB Transmitter in 28 nm CMOS for Neural Implants with IEEE 802.15.6 Compliance
Bibliographic record
Abstract
This paper presents an ultra-compact, energy-efficient IR-UWB transmitter designed in 28 nm CMOS technology for high-density, wireless neural recording implants. The proposed architecture employs a tunable ring VCO-based pulse generator with a differential antenna driver, enabling wide frequency adaptability across lower and upper UWB bands while maintaining compliance with FCC, ECC, and Japanese spectrum masks. A startup-optimized pulse generation scheme and a high-efficiency output stage-both proposed for the first time in this work-enhance transient response and boost output amplitude. The transmitter achieves a peak-to-peak output voltage as high as 1.33 V with a 1.2 V supply, and delivers output power and energy efficiency up to −7.5 dBm and 3.7%, respectively. It supports IEEE 802.15.6 channels 1-9 with tunable bandwidth and occupies only 0.0019 mm 2 of silicon area. These features make it particularly suitable for deep cortical implants where high output amplitude and power efficiency are essential under stringent power and size constraints.
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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 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 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".