High‐selectivity bandpass filter using six pairs of quarter‐wavelength coupled lines
Bibliographic record
Abstract
A novel high‐selectivity bandpass filter (BPF) with multiple transmission poles (TPs) and transmission zeros (TZs) using six pairs of quarter‐wavelength coupled lines has been presented. By employing two pairs of side‐coupled lines and four pairs of open/shorted coupled lines, high roll‐off skirt characteristic, and good stopband rejection can be achieved with five TPs and six TZs. Theoretical analysis is explained and simulated results are illustrated for this high‐performance filter. Finally, a BPF example with a centre frequency of 1.9 GHz and a 3 dB fractional bandwidth of 9% is designed, fabricated, and measured. It is shown that the measured lower and upper stopband rejections are better than 38 and 16 dB, respectively. Good agreement between the simulations and measurements validates the design method.
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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".