A 0.18 μm CMOS channel select filter using Q-enhancement technique
Bibliographic record
Abstract
A channel select filter is designed in particular for the 3.6 GHz range applications. The main function of the filter is to select a channel via a selecting voltage. It also provides a high gain for the selected bandwidth. The filter consists of an on-chip inductor in conjunction with an on-chip varactor. The varactor acts as a variable capacitor; the selecting voltage changes the junction capacitance of the varactor to shift the center frequency. The filter is implemented as an active BPF and provides about 5 dB gain for the selected bandwidth which operates on 1.8 Vdc. The gain and high passband selectivity are the results of the design of a high quality factor filter (few hundreds). A Q-enhancement circuit generates a negative impedance to compensate the low Q of the onchip inductor and provides further selectivity. The Q of this filter is also a function of an external control voltage (i.e., tunable Q). This option offers bandwidth settings for various applications in the selected frequency range. The filter also provides a simple implementation of the receiver as it replaces the off-chip front-end filter and the LNA.
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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) | 0.001 | 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".