Compact Dual-Band Filters Using Single-Cavity SIW and Quarter-Wavelength Stripline Resonators
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Bibliographic record
Abstract
This letter proposes novel dual-band filters utilizing a universal hybrid structure that combines substrate-integrated waveguide (SIW) and quarter-wavelength stripline resonators (QWSLRs). By integrating a single-cavity SIW and different numbers of QWSLRs, two highly compact dual-band filters with large frequency ratios are presented. The dual-band response is achieved in the single-cavity SIW through the interaction of the fundamental mode and higher order modes of the SIW cavity, along with the fundamental modes of QWSLRs. Four metallic vias are introduced as perturbations to achieve more flexible responses. Two hybrid dual-band filters are fabricated for validation. These filters not only maintain the superiority of SIW but also achieve a size reduction exceeding 50% compared to conventional SIW filters of the same order.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 it