A 24 GHz quadrature pulsed oscillator for short-range UWB vehicular radar applications
Bibliographic record
Abstract
A new 24 GHz quadrature pulsed oscillator is presented using 0.13 μm CMOS for short-range ultra-wideband (UWB) vehicular radar. A quadrature inductor-capacitor (LC) oscillator is quickly switched on and off for a pulse repetition time (PRT) as short as 1.66 ns. The switching technique creates a large initial voltage for fast startup (0.5 ns) and locks the initial phase of the oscillations to the input clock for phase coherence. The measured output phase noise matches that of the clock signal, with a relatively low phase noise of -70 dBc/Hz and -100 dBc/Hz at 1 kHz and 1 MHz offset respectively. The integrated rms jitter from 100 Hz to 1 MHz is thus less than 720 fs. The circuit consumes a low average power of less than 1.6 mW and 13.3 mW at 50 MHz and 600 MHz pulse repetition frequencies (PRFs) respectively, or below 8 pj of energy per pulse. It occupies an active area of less than 0.17 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .
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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".