A Microwave OTA Using a Feedforward-Regulated Cascode Topology
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Bibliographic record
Abstract
A CMOS operational transconductance amplifier (OTA) with a novel feedforward-regulated cascode topology is proposed and experimentally demonstrated in this paper. It enables high-speed operation of the proposed OTA up to 8 GHz. For demonstration purposes, a microwave variable resistor and a variable active inductor using this OTA were fabricated using 0.18 μm CMOS process. Experimental results show that this OTA has a relatively high transconductance of about 10.5 mA/V at frequencies up to 8 GHz, with a tuning ratio of 1:5.3. The fabricated active inductor can achieve over 4.7 nH inductance at GHz frequencies and an inductance tuning ratio of 1:3.6 for microwave applications. The OTA basic cell integrated circuit measures 145×67 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , excluding bonding pads.
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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