A 4-GHz Active Scatterer in 130-nm CMOS for Phase Sweep Amplify-and-Forward
Why this work is in the frame
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Bibliographic record
Abstract
This article demonstrates the cooperative diversity improvement achieved using a 120- active scatterer built in 130-nm CMOS technology. The low-power all-analog device acts as a repeater, or relay, for phase sweep amplify-and-forward cooperative transmission. The device relies on microwave reflection to amplify, dynamically phase modulate, and reradiate the incident signal. This reduces the duration of the fades experienced in the indoor radio channel and improves error correction code performance. Radio channel propagation measurements collected using the relay prototype clearly show the effect of the phase modulation on fading and system level simulations conducted using the propagation data show a fivefold increase in coverage area.
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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 it