Feedforward-Regulated Cascode OTA for Gigahertz Applications
Why this work is in the frame
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Bibliographic record
Abstract
A very high-frequency operational transconductance amplifier (OTA) with a new feedforward-regulated cascode topology is demonstrated in this paper. Experimental results show a bandwidth of 10 GHz and a large transconductance of 11 mS. A theoretical analysis of the OTA is provided which is in very good agreement with the measured results. We also carry out a Monte Carlo simulation to determine the effect of transistor mismatches and process variations on the transconductance and input/output parasitic capacitances of the OTA. The linearity and intermodulation distortion properties of the OTA, which are of particular interest in microwave applications, are experimentally determined using a purpose-built single-stage amplifier. For high-frequency demonstration purposes we built a larger circuit: an inductor less microwave oscillator. The fabricated oscillator operates at 2.89 GHz and has a significantly larger output voltage swing and better power efficiency than other inductor less oscillators reported in the literature in this frequency range. It also has a very good phase noise for this type of oscillators: -116 dBc/Hz at 1-MHz offset.
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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