8-GHz, 6.6-mW LC-VCO with Small Die Area and FOM of 204 dBc/Hz at 1-MHz Offset
Why this work is in the frame
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Bibliographic record
Abstract
This letter discusses the design of an 8-GHz LC-tank voltage-controlled oscillator (VCO) for use in a receiver chain developed for the Cerro Chajnantor Atacama Telescope Heterodyne Array Instrument. A VCO-optimization approach is proposed that reduces the phase noise (PN) and minimizes the VCO die area. An LC-VCO is realized in a 0.13-μm CMOS technology to validate the design methodology experimentally. The VCO achieves a worst-case PN, within the whole tuning range of 850 MHz, of -131 dBc/Hz at a 1-MHz offset. At 8 GHz the oscillator PN is measured to be -134.3 dBc/Hz at a 1-MHz offset achieving a figure of merit (FOM) of 204 dBc/Hz.
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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