Continuous time bandpass ΔΣ modulators for a software defined radio
Bibliographic record
Abstract
A mixed-signal continuous time band-pass delta-sigma modulator (CT BP /spl Delta//spl Sigma/) is a very attractive circuit category for applications where a time domain signal is to be processed in the digital domain. High-speed applications, such as wireless communications and software defined radio, are in need of a tunable bandpass filter in GHz range. We present a top level analytical model of a tunable 4/sup th/ order CT BP /spl Delta//spl Sigma/ modulator which is used for development of our mixed-signal continuous time behavioral circuit model. High speed CT /spl Delta//spl Sigma/ modulators are implemented using both "analog" and "digital" subblocks. We created mixed-signal models of the subblocks in order to efficiently perform simulations in the continuous time domain. The models were built out of primitives available in SPICE and Verilog-A/spl trade/. Simulation results confirmed validity of the analytical model.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".