Effects of hot-carrier stress on the RF performance of 0.18 μm technology NMOSFETs and circuits
Bibliographic record
Abstract
The effects of DC hot-carrier stress on DC and RF performance of submicron LDD NMOSFETs are investigated. It is shown that the unity current gain frequency f/sub T/ decreases as the transconductance g/sub m/ and gate-source capacitance C/sub gs/ of the transistor are degraded with stress time. It is observed that the degradation of f/sub T/ versus stress time is faster than that of the g/sub m/ degradation. This was found to be due to the increase of the C/sub gs/ with stress. The threshold voltage V/sub th/ and the output conductance g/sub ds/ increase and the intrinsic voltage gain of the device A/sub /spl nu/,int/ decreases by stress. The effect of hot carrier stress on the noise performance of the device is investigated by calculating the minimum noise figure of the device NF/sub min/ before and after stress, using the calibrated small signal model of the transistors. The results of the hot carrier experiments on single devices are used to analyze the hot carrier effects on the transistor power gain G/sub T/, input matching /spl Gamma//sub in/, noise figure NF and stability factor /spl mu/ of a low noise amplifier made of these NMOSFETs.
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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 | 0.001 |
| 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) | 0.001 | 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 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".