Design and characterization of periodically-loaded substrate integrated waveguide phase shifters
Bibliographic record
Abstract
A substrate integrated waveguide (SIW) phase shifter with tuning capability is introduced in this paper. Transverse slots are placed on the top plane of an SIW and loaded with capacitive elements. This structure has a periodic topology thus exhibits electromagnetic bandgap (EBG) properties. It is shown that the slots can be properly designed to avoid radiation loss. As well, the relationships between transmission characteristics and design parameters such as capacitor value and slot size are investigated through parametric simulations. Several phase shifter prototypes with 6 unit cells were fabricated and evaluated using S-parameter measurements. A very good agreement is observed between measurements and simulations. It is demonstrated that the proposed phase shifter provides the phase tuning range of 230.1° at 15 GHz and yields a ±5° phase bandwidth of 32.5% for the case of 0.3-pF loading capacitor.
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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 | 0.001 |
| 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 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".