Stainless Steel Laser-Sintered 3D Printed Corrugated Horn Antennas at Ka Band
Bibliographic record
Abstract
The viability of stainless steel as the constituent material for 3D printed corrugated conical horn antennas at Ka Band is explored in this work. Three identical corrugated antennas are fabricated to assess the impact of different levels of post processing on the metal surface. A fourth conical horn antenna without corrugations was fabricated using the same metal 3D printing process. This ‘basic’ horn antenna is used as a baseline performance comparator for the corrugated horns. Measurements show that the 3D printed corrugated horn can deliver a peak realized gain of 19.3 dBi at 38.5 GHz and a cross-polar discrimination (XPD) in the $\vec{E}$ plane below 22.8 dB at 28 GHz and below 27.5 dB at 40 GHz. The XPD performance in the $\vec{H}$ is below 23 dB at 28 GHz and below 32.8 dB at 40 GHz.
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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 | 0.001 |
| 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 | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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".