Quad‐band reflective metasurface for linear to circular polarization conversion
Bibliographic record
Abstract
Abstract A quad‐band linear to circular polarization (CP) conversion based on a reflective metasurface is presented. The unit cell of proposed reflective metasurface consists of two unequal tilted and crossed bi‐directional arrow strips with an elliptical ring printed on a grounded dielectric slab. The operating bandwidth of the proposed structure is enhanced by introducing two small slits into the long arrow. A reflective metasurface sheet is fabricated and measured for verification. The simulated and measured results show that the reflective metasurface converter successfully transforms linearly polarized incident waves into right‐hand circularly‐polarized waves in frequency bands 9.49–9.96 GHz and 20–31.8 GHz and into left hand circular polarized waves in frequency bands 12.2–14.44 and 31.8–32.1 GHz. Also, wide angular stability up to 50° oblique incidence along with high efficiency reveals the good applicability of the structure. The proposed reflective structure can be used in multiband satellite communication systems and multifunctional dual‐circularly polarized antenna systems.
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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) | 0.000 | 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 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".