High resolution track and hold for broadband wireless applications
Bibliographic record
Abstract
The purpose of this paper is to describe and compare GaAs-InGaP HBT high sample rate track and hold amplifier designs. These are building blocks targeted to be used in next generation data conversion circuits. The track and hold designs are optimized to operate at 600 MSPS with 10 bits effective resolution. The two designs were fabricated to accommodate 0.5 Vpp and 1.0 Vpp full-scale voltage swings. The design with input signal requirement of 1.0 Vpp generates second and third harmonic distortion below -74 dBc at 60 MHz during single-tone test. During two-tone measurements, the device generated third order intermodulation distortion of -72 dBc with carriers centered around 61 MHz and -54 dBc with carriers close to Nyquist frequency. With a full-scale swing of 4.0 Vpp, the device generated third harmonic distortion of -45 dBc at 60 MHz input frequency. The pedestal during hold is less than 1 mV and droop rate is negligible. The designs were fabricated utilizing Nortel Network's GaAs-InGaP HBT with f/sub t/ of 70 GHz and fmax of 110 GHz.
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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 | 0.000 |
| 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 | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 0.002 |
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".