Bibliographic record
Abstract
Abstract A variable gain amplifier is demonstrated using only one fully‐differential operational transconductance amplifier (OTA) as the core circuit element.Gain control is achieved by varying the transconductance of the OTA and by using an output buffer circuit to sum the output signals of the OTA in the correct phase relationship. The circuit was designed and fabricated using 0.18 μm CMOS technology. Measured results show a gain control range of 15 dB between 1 GHz and 3 GHz and the input and output reflection coefficients are below −10 dB and −20 dB, respectively. The output power of the amplifier is +2.3 dBm at its 1‐dB compression point. The chip has a maximum DC power consumption 12.6 mW and it measures 0.25 mm2 including bonding pads. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1112–1116, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25114
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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".