Compact Multilayer Half Mode Substrate Integrated Waveguide 3-dB Coupler
Bibliographic record
Abstract
In this letter, a wideband compact 3-dB coupler is designed based on the multilayer half mode substrate integrated waveguide (HMSIW) theory and Bethe hole coupling theory. The design utilizes higher band of quasi-TE0.5,0mode in HMSIW and dual-layer structure to reduce the size of component. This letter also theoretically proposes a relationship between SIW and HMSIW broad wall coupler with the same coupling section, which can obviously simplify the design procedure and maintain stable coupling differences. Meanwhile, this coupler shows a 3-dB coupling over a wide bandwidth with a single row of only five small apertures, which needs more in SIW and waveguide circuits. In long term, the method of cutting SIW components along magnetic wall to get HMSIW components can also play an important role in the future design, especially in size reduction and performance improvement of the circuits. Simulation results are in agreement with the measured data.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 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 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".